Landscaping maintenance fertilizer and water supply system

Abstract

The invention provides a landscaping maintenance fertilizer and water supply system, and relates to the technical field of smart gardens, and the system comprises a region division module which is used for dividing a maintenance region into an arbor region, a shrub region and a lawn region according to the plant type distribution of a park green land, and obtaining the soil characteristic data and terrain elevation data of each region; the formula configuration module is used for configuring differentiated fertilizer and water formulas for different plant type regions on the basis of the soil characteristic data and the plant type partition data; and the scheme formulating module is used for formulating a fertilizer and water supply scheme adapted to the topographic features based on the fertilizer and water formula and in combination with the topographic elevation data, including arranging a drainage dredging facility in the depression area and adopting a slow-release irrigation mode in the slope area. According to the invention, fine management of landscaping maintenance and healthy growth of plants are realized, and the landscape effect and environmental benefits are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of smart gardens, in particular to a garden greening maintenance fertilizer and water supply system. BACKGROUND

[0002] Taking a certain city park as an example, when fertilizing different plant areas in the park, garden workers mostly rely on experience to apply the same formula of fertilizer to arbor area, shrub area and lawn area. In this park, there is a region where tall poplar trees are planted as arbor, purple glory trees as shrubs, and a large area of manila grass as lawn. Under the traditional way, workers uniformly spread general compound fertilizer to the whole region. However, the poplar trees are in the rapid growth period and need a large amount of nitrogen fertilizer, but the nitrogen content in the general fertilizer is not enough to meet the demand of the rapid growth of the poplar trees to make the tree crown more lush. As for the purple glory shrubs, phosphorus and potassium fertilizer is needed to promote flowering and maintain the overall growth balance, but the phosphorus and potassium ratio of the general fertilizer is not accurate. The lawn needs to promote the robustness and resistance of the root system, and the general fertilizer cannot meet the needs in this respect, which leads to poor growth of different plants and cannot achieve the final landscape effect.

[0003] In addition, in terms of irrigation, the traditional way is mostly to use watering carts to irrigate at fixed time and quantity. In this park area, regardless of the height difference and soil water retention capacity difference, irrigation is carried out according to fixed time interval and water quantity. There is a low-lying section in the park, and the soil itself has good water retention. After each irrigation by the watering cart, water accumulates for a long time and is difficult to penetrate and evaporate, causing the plant roots to be soaked in the over-wet soil for a long time, which is easy to cause root diseases. In the adjacent slope area, the water loss is fast due to the high terrain, and the soil soon dries up. However, the watering cart still irrigates according to the unified water quantity and frequency, which leads to insufficient water supply for the plants on the slope and inhibits the growth of the plants. The traditional garden greening maintenance fertilizer and water supply method cannot accurately supply fertilizer and water according to the plant type, soil characteristics and terrain features. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a garden greening maintenance fertilizer and water supply system to realize differentiated and adaptive supply of fertilizer and water, improve the growth state of plants, and improve the quality and efficiency of garden greening maintenance.

[0005] To solve the above technical problems, the technical solution of the present application is as follows: In a first aspect, a garden greening maintenance fertilizer and water supply system comprises: A region division module is configured to divide the maintenance region into arbor area, shrub area and lawn area according to the plant type distribution of the park green land, and obtain soil characteristic data and terrain elevation data of each region. A formula configuration module is configured to configure differentiated fertilizer and water formulas for different plant type regions based on the soil characteristic data and plant type zoning data. The scheme formulation module is used to formulate fertilizer and water supply schemes adapted to the terrain features based on fertilizer and water formulas and combined with topographic elevation data, including setting up drainage and diversion facilities in low-lying areas and adopting slow-release irrigation methods in sloping areas. The monitoring module is used to deploy multi-source dynamic sensing nodes in the maintenance area according to the fertilizer and water supply plan, and build a monitoring network covering different microenvironments; the deployed soil moisture sensors monitor the soil moisture content in real time, and combine meteorological data to dynamically adjust the fertilizer and water supply and irrigation frequency to obtain real-time monitoring data. The analysis and correction module is used to perform spatial correlation analysis on the monitoring area based on real-time monitoring data, generate comprehensive adjustment parameters, and use the adjustment parameters to dynamically correct the fertilizer and water supply and irrigation frequency to obtain the corrected fertilizer and water supply and irrigation frequency. The feedback adjustment module is used to periodically collect plant growth status and soil nutrient data during the fertilizer and water supply process based on the corrected fertilizer and water supply amount and irrigation frequency, and adjust the fertilizer and water ratio and supply strategy through the data feedback mechanism.

[0006] Furthermore, based on soil characteristic data and plant type zoning data, differentiated fertilizer and water formulas are configured for different plant type areas, including: Extract the specific boundaries and area information of tree areas, shrub areas, and lawn areas from the plant type zoning data to form preliminary zoning data; Spatial overlay analysis was performed on soil characteristic data and preliminary zoning data to calculate the average soil nutrient content in each zone, generating comprehensive zoning data with soil nutrient information. Based on the plant type information in the comprehensive zoning data, the needs for promoting vigorous canopy growth are marked for the tree area, the needs for maintaining overall growth balance are marked for the shrub area, and the needs for promoting robust root systems and stress resistance are marked for the lawn area. Based on the marked nutrient requirements, fertilizer and water formulas were matched to promote canopy growth in the tree area, to maintain overall growth in the shrub area, and to promote root development in the lawn area, thus obtaining the fertilizer and water formula matching results for each area.

[0007] Furthermore, based on the fertilizer and water formula and combined with topographic elevation data, a fertilizer and water supply plan adapted to the terrain characteristics is formulated, including the installation of drainage facilities in low-lying areas and the adoption of slow-release irrigation methods in sloping areas, including: Based on fertilizer and water formulas and topographic elevation data, low-lying areas are identified, and a preliminary supply plan including drainage and diversion facilities is generated. Based on the preliminary supply plan, sloping areas were identified, and the preliminary supply plan was expanded by using slow-release irrigation methods in conjunction with fertilizer and water formulas to generate an intermediate supply plan that includes sloping irrigation measures. Based on the intermediate supply scheme, the slope change information in the terrain elevation data is extracted, and the irrigation pressure and time parameters are calibrated to generate a terrain-adapted supply scheme; The drainage facilities for low-lying areas and the slow-release irrigation measures for slope areas in the terrain-adapted supply scheme are integrated to form a final fertilizer and water supply implementation scheme that adapts to the terrain characteristics.

[0008] Further, according to the fertilizer and water supply scheme, multiple-source dynamic sensing nodes are arranged in the maintenance area to build a monitoring network covering different microenvironments, including: According to the fertilizer and water supply scheme, the arbor area, shrub area and lawn area are identified, and soil moisture sensors, temperature sensors and light sensors are respectively deployed in the corresponding areas to generate an initial node layout scheme; Based on the initial node layout scheme, the sensor nodes deployed in each subarea are connected to the central controller through a wireless network to establish a preliminary monitoring network for real-time data collection; Based on the preliminary monitoring network, the distribution density and installation location of the sensor nodes are adjusted in combination with the microenvironment difference characteristics of each subarea to generate an adjusted monitoring network configuration; The sensor node layout of each subarea in the monitoring network configuration is integrated to form a complete monitoring network covering different microenvironments.

[0009] Further, the soil moisture content is monitored in real time by the deployed soil moisture sensors, and the fertilizer supply amount and irrigation frequency are dynamically adjusted in combination with the weather data to obtain real-time monitoring data, including: Based on the complete monitoring network, the real-time soil moisture data is obtained, and the deviation value between the current soil water content and the preset ideal water content is calculated; Based on the deviation value, the precipitation, evaporation and temperature information in the real-time weather data are combined to predict the soil moisture change trend in the future period to obtain a soil moisture change trend prediction result; Based on the soil moisture change trend prediction result, an adjustment scheme for the irrigation amount and irrigation time interval is automatically generated; The adjustment scheme is integrated with the fertilizer formula to generate monitoring data for real-time fertilizer and water supply suitable for the current environmental conditions.

[0010] Further, based on the deviation value, the precipitation, evaporation and temperature information in the real-time weather data are combined to predict the soil moisture change trend in the future period to obtain a soil moisture change trend prediction result, including: Based on the deviation value, the soil moisture trend is predicted, and the real-time monitored precipitation, evaporation and temperature information are used as the prediction basis; The deviation value and the weather data are combined through a predefined water content change calculation rule to obtain the continuous change value of the soil water content in the future period; According to the continuous change value, the overall change trend of the soil water content in the future period is determined, and the change trend is analyzed to determine the predicted decline rate of the soil water content and the predicted time of reaching the critical point of water demand.

[0011] Further, based on the real-time monitoring data, spatial correlation analysis is performed on the monitoring area to generate comprehensive adjustment parameters, and the adjustment parameters are used to dynamically correct the fertilizer and water supply amount and irrigation frequency to obtain the corrected fertilizer and water supply amount and irrigation frequency, including: Based on the real-time monitoring data, spatial interpolation analysis is performed on the soil water and nutrient data to form soil water spatial distribution data and soil nutrient spatial distribution data; Based on the soil water spatial distribution data and the soil nutrient spatial distribution data, the hot and cold point areas of fertilizer and water demand are identified through spatial correlation analysis to generate regional demand spatial feature data; Based on the regional demand spatial feature data, the demand difference ratio of the hot and cold point areas is calculated to automatically generate a comprehensive adjustment parameter set including an irrigation amount correction coefficient and an irrigation frequency adjustment parameter; The comprehensive adjustment parameter set is applied to the fertilizer and water supply scheme to dynamically correct the irrigation amount and irrigation frequency to obtain the corrected fertilizer and water supply amount and irrigation frequency.

[0012] Further, based on the corrected fertilizer and water supply amount and irrigation frequency, plant growth status and soil nutrient data are regularly collected during the fertilizer and water supply process, and the fertilizer ratio and supply strategy are adjusted through a data feedback mechanism, including: Based on the corrected fertilizer and water supply amount and irrigation frequency, plant height, chlorophyll content, and soil key nutrient index data are regularly collected to generate growth status monitoring data sets and soil nutrient monitoring data sets; Based on the growth status monitoring data sets and soil nutrient monitoring data sets, the change trend of plant growth status and soil nutrient data is analyzed by calculating the plant growth rate and nutrient consumption rate to generate quantitative growth status change analysis results; Based on the quantitative growth status change analysis results, the nutrient proportion in the differential fertilizer formula is adjusted to generate an updated fertilizer formula; Based on the updated fertilizer formula, the irrigation frequency is adjusted accordingly to form the final adjusted fertilizer supply strategy.

[0013] In a second aspect, a computing device includes: one or more processors; a storage device for storing one or more programs, which when executed by the one or more processors, cause the one or more processors to implement the system.

[0014] In a third aspect, a computer readable storage medium stores a program which, when executed by a processor, implements the system.

[0015] The above scheme of the present application at least has the following beneficial effects: According to different plant types in the tree area, shrub area and lawn area, combined with soil property data of each area, the differentiated fertilizer and water formula is configured, the problems of insufficient or excessive nutrients of part of plants caused by the traditional single formula are reduced, the growth state of the plants is improved, the fertilizer and water supply scheme is made based on the terrain elevation data, the maintenance pain points of different terrains can be solved, the drainage facilities are arranged in the park depression area, the plant root rot disease caused by water accumulation in the traditional irrigation can be avoided, the slow-release irrigation mode is used in the slope area, the water loss speed can be slowed down, the problems of rapid water erosion and insufficient water absorption of plants in the traditional sprinkler irrigation on the slope can be reduced, the plants in different terrain areas can obtain suitable fertilizer and water supply environment, the monitoring network constructed by the multi-source dynamic sensing nodes can obtain the soil humidity, weather data and other information in real time, the fertilizer and water supply amount and irrigation frequency are dynamically adjusted combined with the soil moisture change trend prediction.

[0016] The plant growth state and soil nutrient data are collected periodically through the data feedback mechanism, the adjusted fertilizer and water ratio and supply strategy are automatically generated, the maintenance personnel do not need to repeatedly try and adjust based on experience, the manual operation link is reduced, the maintenance and management cost is reduced, the overall efficiency of the landscaping maintenance is improved, the healthy growth state of the plants in the park and other green land is maintained for a long time by means of the differentiated and dynamic fertilizer and water supply mode, the phenomena of plant wilting and death caused by improper fertilizer and water supply are reduced, the consistency and stability of the green land landscape are ensured, the soil ecological environment is improved, the soil fertility and water and fertilizer retention capacity are enhanced, the sustainable soil foundation is provided for the plant growth, the service life of the green land is prolonged, and the economic investment of the green land renovation and reconstruction is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a schematic diagram of a landscaping maintenance fertilizer and water supply system provided by an embodiment of the present application.

[0018] Figure 2 is a process schematic diagram of configuring differentiated fertilizer and water formula for different plant type areas based on soil property data and plant type zoning data provided by an embodiment of the present application. DETAILED DESCRIPTION

[0019] Exemplary embodiments of the present disclosure will be described in greater detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it is understood that the present disclosure can be embodied in various forms without being limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure will be thoroughly and completely understood, and will fully convey the scope of the present disclosure to those skilled in the art.

[0020] As Figure 1 shown, an embodiment of the present application proposes a landscaping maintenance fertilizer water supply system, comprising: a region division module, configured to divide the maintenance region into arbor area, shrub area and lawn area according to the plant type distribution of the park green land, and obtain soil property data and topographic elevation data of each region; a formula configuration module, configured to configure differentiated fertilizer formula for different plant type regions based on the soil property data and plant type zoning data; a scheme formulation module, configured to formulate a fertilizer supply scheme suitable for the topographic features based on the fertilizer formula and in combination with the topographic elevation data, including setting drainage facilities in depression areas and adopting slow-release irrigation mode in slope areas; a monitoring construction module, configured to arrange multi-source dynamic sensing nodes in the maintenance region according to the fertilizer supply scheme, and construct a monitoring network covering different microenvironments; real-time monitoring of soil moisture content is performed through the deployed soil humidity sensor, and the fertilizer supply amount and irrigation frequency are dynamically adjusted in combination with meteorological data to obtain real-time monitoring data; an analysis and correction module, configured to perform spatial correlation analysis on the monitoring region based on the real-time monitoring data, generate comprehensive adjustment parameters, and dynamically correct the fertilizer supply amount and irrigation frequency using the adjustment parameters to obtain the corrected fertilizer supply amount and irrigation frequency; a feedback adjustment module, configured to periodically collect plant growth state and soil nutrient data during the fertilizer supply process based on the corrected fertilizer supply amount and irrigation frequency, and adjust the fertilizer ratio and supply strategy through a data feedback mechanism.

[0021] In this embodiment of the invention, differentiated fertilizer and water formulas are configured according to different plant types in tree areas, shrub areas, and lawn areas, combined with soil characteristic data of each area. This reduces the problem of insufficient or excessive nutrients for some plants caused by traditional single formulas, improves plant growth status, and the fertilizer and water supply plan based on topographic elevation data can specifically solve the maintenance pain points of different terrains. Drainage and dredging facilities are set up in the low-lying areas of the park to avoid root rot caused by water accumulation in low-lying areas during traditional irrigation. Slow-release irrigation is used in sloping areas to slow down the rate of water loss and reduce the problem of rapid water erosion and insufficient water absorption by plants when traditional sprinkler trucks irrigate slopes, ensuring that plants in different terrain areas can obtain a suitable fertilizer and water supply environment. Through a monitoring network constructed by multi-source dynamic sensing nodes, information such as soil moisture and meteorological data can be obtained in real time. Combined with the prediction of soil moisture change trends, the fertilizer and water supply and irrigation frequency can be dynamically adjusted.

[0022] By regularly collecting plant growth status and soil nutrient data through a data feedback mechanism, the system automatically generates adjusted fertilizer and water ratios and supply strategies. This eliminates the need for maintenance personnel to rely on repeated trial and error, reducing manual operations, lowering maintenance and management costs, and improving the overall efficiency of landscaping maintenance. Through differentiated and dynamic fertilizer and water supply models, the system maintains the healthy growth of plants in parks and other green spaces in the long term, reducing plant wilting and death caused by improper fertilizer and water supply. This ensures the consistency and stability of the green space landscape, improves the soil ecological environment, enhances soil fertility and water and fertilizer retention capacity, provides a sustainable soil foundation for plant growth, extends the lifespan of green spaces, and reduces the economic investment required for green space renovation and reconstruction.

[0023] like Figure 2 As shown, in a preferred embodiment of the present invention, based on soil characteristic data and plant type zoning data, differentiating fertilizer and water formulas are configured for different plant type regions, which may include: The specific boundaries and area information of the tree area, shrub area, and lawn area in the plant type zoning data are extracted to form preliminary zoning data. Specifically, this involves: first, collecting existing plant distribution maps and field inspection records from the past three months for a certain city park. These materials record in detail the approximate growth range of the tree area where poplar trees are located, the shrub area where crape myrtle trees are located, and the lawn area where Manila grass is located. Then, using GPS positioning equipment, the location coordinates are recorded every 5 meters along the edge of the tree area to ensure that the outer contour of the entire tree area is covered. For obvious landmarks, such as a row of neat curb stones or the boundary of a specific landscape sculpture, the coordinate points are calibrated in conjunction with the location of the landmarks to finally form a complete set of boundary coordinates for the tree area. The same method is used to record the boundary coordinates of the shrub area and the lawn area respectively to ensure that the boundaries of the three areas neither overlap nor omit. For example, a 1-meter-wide path between the tree area and the shrub area will serve as a clear boundary.

[0024] After obtaining the boundary coordinates of the three regions, the coordinates are input into the geographic information software, which automatically connects the coordinate points to form a closed region figure. Then, the area calculation function of the software is operated, and the software calculates the area of each closed region through the boundary coordinates. The area of the tree region is obtained by the polygon area surrounded by its boundary coordinates, and the area of the shrub region and the lawn region is also calculated in the same way. Finally, the name of each region, the complete boundary coordinate list, and the calculated area value are arranged into a table to form the preliminary zoning data.

[0025] The soil property data and the preliminary zoning data are spatially overlaid and analyzed to calculate the average values of soil nutrient content in each zone, and comprehensive zoning data with soil nutrient information is generated, including: according to the region range determined by the preliminary zoning data, 12 sampling points are set in the tree region at intervals of 20 meters; 8 sampling points are set in the shrub region at intervals of 20 meters; and 15 sampling points are set in the lawn region at intervals of 15 meters due to the larger area and the need for more detailed data. At each sampling point, a soil sample is taken by vertically drilling into the ground 20 cm with a soil drill. All soil samples are tested to obtain the soil nitrogen content, phosphorus content, potassium content, organic matter content, and pH value of each sampling point. These test results are arranged according to the sampling point number, and then the coordinates of each sampling point and the corresponding test data are input into the geographic information software to form the soil property data layer.

[0026] The generated preliminary zoning data layer is called in the software, and the soil property data layer is overlaid with the preliminary zoning data layer. The software automatically identifies which plant region each soil sampling point belongs to, and then calculates the average values of soil nutrients in each zone. For the tree region, the nitrogen content of the 12 sampling points is added together to obtain the total soil nitrogen content of the tree region, and then divided by 12 to obtain the average soil nitrogen content of the tree region. The average values of phosphorus content, potassium content, and organic matter content are calculated in the same way. For the shrub region, the average values of soil nitrogen, phosphorus, potassium, and organic matter content are obtained by adding the nutrient contents of the 8 sampling points and then dividing by 8. For the lawn region, the average values of each soil nutrient are obtained by adding the nutrient contents of the 15 sampling points and then dividing by 15. Finally, the name of each region, the boundary coordinates, the area, and the corresponding average values of each soil nutrient are integrated to form the comprehensive zoning data.

[0027] According to the plant type information in the comprehensive zoning data, the needs of promoting the lush growth of the canopy are labeled for the arbor zone, the needs of maintaining the overall balanced growth are labeled for the shrub zone, and the needs of promoting the root system health and stress resistance are labeled for the lawn zone, specifically including: according to the plant type recorded in the comprehensive zoning data, combined with the growth characteristics of the three plants in the city park, the fertilizer demand is analyzed, the poplar planted in the arbor zone is in the stage of rapid elongation of branches and large germination of leaves, and the lush degree of the canopy directly affects the sense of level of the landscape, and sufficient nutrients are the key to promote the growth of the canopy, so the fertilizer demand of the arbor zone is determined to promote the lush growth of the canopy; the Lagerstroemia indica flower tree in the shrub zone needs to ensure uniform growth of branches without overgrowth or weakness, and also needs to store nutrients for the upcoming flowering period to ensure uniform flowering and bright flower color, and overall balanced growth is the core requirement of its growth, so the fertilizer demand of the shrub zone is determined to maintain the overall balanced growth; the Manila grass in the lawn zone needs to be firmly fixed in the soil through a healthy root system, and also needs to be able to resist external influences such as trampling and drought, and the development of the root system and the improvement of the stress resistance are the focus of its growth, so the fertilizer demand of the lawn zone is determined to promote the root system health and stress resistance, and these fertilizer demands are labeled in the corresponding regional information in the comprehensive zoning data.

[0028] According to the labeled fertilizer characteristics, the fertilizer and water formula for promoting the growth of the canopy is matched for the arbor zone, the fertilizer and water formula for maintaining the overall growth is matched for the shrub zone, and the fertilizer and water formula for promoting the development of the root system is matched for the lawn zone, to obtain the matching result of the fertilizer and water formula of each region, specifically including: according to the fertilizer demand of each zone and the average soil nutrient value in the comprehensive zoning data, start to configure the differentiated fertilizer and water formula, for the arbor zone, considering its demand for promoting the lush growth of the canopy, nitrogen element is the key, first determine the basic proportion of nitrogen element in the formula as 40%, then check the average soil nitrogen content of the arbor zone, if the average value is lower than the conventional standard of soil nitrogen content in the park (1.2 g / kg), it means that the soil itself is insufficient in nitrogen element, so the proportion of nitrogen element in the formula is increased by 5% to 45%; if the average value of soil nitrogen content is higher than the conventional standard, the proportion of nitrogen element is reduced by 3% to 37%; phosphorus element can promote the lignification of branches, the basic proportion is set to 20%, and according to the average value of soil phosphorus content, if it is lower than the conventional standard (0.6 g / kg), it is increased by 2%, and if it is higher, it is reduced by 2%; potassium element helps to enhance the resistance of trees to lodging, the basic proportion is set to 40%, and according to the average value of soil potassium content (the conventional standard is 2.0 g / kg), the same ±2% adjustment is made, and finally the fertilizer and water formula of the arbor zone is formed.

[0029] For the shrub area, based on the demand to maintain overall growth balance, the basic proportions of nitrogen, phosphorus and potassium elements are respectively set as 30%, 30% and 40%. According to the average value of soil nutrients in the shrub area, if the soil phosphorus content is lower than the conventional standard and the purple glory period has high demand for phosphorus, the proportion of phosphorus element is increased by 4%, and the proportion of nitrogen element is reduced by 4%. If the soil potassium content is lower than the conventional standard, the proportion of potassium element is increased by 3%, and the proportion of nitrogen element is reduced by 3%, so as to ensure that the total proportion is 100% and the fertilizer and water formula of the shrub area is formed. For the lawn area, in order to meet the demand of promoting root system and stress resistance, the basic proportion of potassium element is set as 50%. If the average value of soil potassium content is lower than the conventional standard, it is increased by 5%. If it is higher, it is reduced by 3%. The basic proportion of nitrogen element is 25% for maintaining the green of lawn. According to the average value of soil nitrogen content, the adjustment is ± 3%. The basic proportion of phosphorus element is 25% for assisting root system to absorb nutrients. According to the average value of soil phosphorus content, the adjustment is ± 2%. Finally, the fertilizer and water formula of the lawn area is formed. The fertilizer and water formula of the three regions is arranged into a table to obtain the matching result of the fertilizer and water formula of each region.

[0030] By accurately extracting the boundaries and areas of each plant area, the formula configuration has a clear range of action, which provides a clear regional basis for targeted fertilization. Through detailed soil sampling and nutrient average value calculation, the formula configuration can closely combine the actual situation of each region, ensure that the nutrients in the fertilizer can accurately supplement the insufficient part of the soil, reduce nutrient waste, clearly mark the fertilizer demand of each region, and ensure that the core growth demand of each plant can be supported by nutrients. According to the fertilizer demand and soil condition matching differential formula, the arbor area can obtain nutrients to promote crown growth, the shrub area can obtain nutrients to maintain growth balance, and the lawn area can obtain nutrients to promote root system health, which helps the park plants to show good landscape effect.

[0031] In a preferred embodiment of the present application, based on the fertilizer and water formula, combined with the terrain elevation data, a fertilizer and water supply scheme suitable for the terrain characteristics is formulated, including setting drainage facilities in low-lying areas and using slow-release irrigation method in slope areas, which can include: Based on the fertilizer formula and topographic elevation data, the low-lying area is identified, and the preliminary supply scheme including drainage facilities is generated, which specifically includes: first, the park topographic elevation data collection work is carried out. The city park is in the shape of a rectangle, 200 meters long and 100 meters wide. According to the principle of uniform distribution, a high sampling point is set every 20 meters in the park, a total of 66 sampling points, 11 points horizontally, from west to east 0 meters, 20 meters…200 meters, 6 points vertically, from north to south 0 meters, 20 meters…100 meters. Using a high-precision electronic elevation measuring instrument, the ground elevation of each sampling point is measured and recorded one by one, for example, the sampling point (40 meters, 20 meters) elevation is 29.2 meters, the sampling point (60 meters, 40 meters) elevation is 28.5 meters, the sampling point (80 meters, 60 meters) elevation is 29.1 meters, etc.

[0032] Then, the flat sampling points are screened and the average elevation of the flat land is calculated. Combined with the park field survey records, the flat area with no obvious ups and downs and uniform plant growth is selected, mainly the most area of poplar tree area and the central area of purple wisteria shrub area, corresponding to 20 sampling points. The elevation values of these 20 sampling points are added in turn, and the total sum is 582 meters. Divide this sum by the number of sampling points 20 to calculate the average elevation of the flat land as 29.1 meters. Then, the low-lying area is identified. The elevation values of the 66 sampling points are compared with the average elevation of the flat land 29.1 meters. The low-lying area judgment standard is set as the elevation being lower than the average elevation of the flat land by 5 centimeters or more, and any three of the four directions of the sampling point, i.e. up, down, left and right, meet this condition. After checking one by one, it is found that the low-lying purple wisteria area in the southeast of the park meets the standard. The elevations of the six sampling points (120 meters, 20 meters) to (160 meters, 40 meters) in this area are 28.4 meters, 28.5 meters, 28.6 meters, 28.4 meters, 28.5 meters and 28.6 meters respectively, all of which are 5 to 7 centimeters lower than the average elevation of the flat land, and the elevations of the three adjacent points of each sampling point are also lower than 29.1 meters. Therefore, it is determined that this area is a low-lying area, and the area is measured to be 400 square meters (40 meters long and 10 meters wide).

[0033] Designing drainage facilities, the first step is to calculate the total water quantity after single irrigation in the low-lying Lagerstroemia indica area. According to the formula of the area and the formula of Lagerstroemia indica shrubs, the irrigation quantity per square meter is 20 liters each time. First, calculate the total water quantity after single irrigation, which is the area multiplied by the irrigation quantity per square meter each time, that is, 400 square meters multiplied by 20 liters per square meter, which equals 8000 liters. Then, combined with the maximum rainfall in the local rain season in the past 5 years, the total water quantity after single irrigation if it rains is the irrigation water quantity plus the rainfall water quantity, that is, 8000 liters plus 400 square meters multiplied by 2 liters per square meter, which equals 8800 liters; the second step is to determine the specification and quantity of the drainage pipe. According to the standard of garden drainage engineering, the PVC plastic drainage pipe with a pipe diameter of 10 centimeters and a wall thickness of 3 millimeters meets the requirements of the park soil pressure, and the compressive strength can drain 5000 liters per hour. In order to ensure that all the accumulated water is drained within 2 hours after irrigation, and to avoid root soaking for more than 2 hours to cause diseases, the hourly drainage capacity should not be less than the total water quantity divided by the drainage time, that is, 8800 liters divided by 2 hours, which equals 4400 liters per hour. Therefore, the PVC drainage pipe with a pipe diameter of 10 centimeters can meet the demand with a drainage capacity of 5000 liters per hour; the third step is to plan the layout of the drainage pipe. According to the low-lying Lagerstroemia indica area with a length of 40 meters and a width of 10 meters in the shape of a rectangle, the drainage pipe is arranged along the length direction (east-west direction) of the area, one every 5 meters, a total of 4, located at a distance of 2 meters, 7 meters, 12 meters and 17 meters from the north boundary respectively. The length of each drainage pipe is consistent with the width of the area, which is 10 meters. The burial depth is set to 0.8 meters, which is lower than the root distribution depth of Lagerstroemia indica trees by 1.2 meters, so as to avoid damaging the roots. The two ends of the drainage pipe are connected to the main drainage pipe network of the park, and the drainage pipe itself maintains a slope of 0.5%, with a west-high and east-low gradient of 0.5 centimeters per meter, to ensure smooth flow of accumulated water to the main pipe network.

[0034] The low-lying Lagerstroemia indica area is equipped with 4 PVC drainage pipes with a pipe diameter of 10 centimeters and a wall thickness of 3 millimeters, a burial depth of 0.8 meters, a spacing of 5 meters, a slope of 0.5%, and both ends connected to the main drainage pipe network. The drainage facility parameters are integrated with the basic fertilizer and water formula of each area, the irrigation quantity of 25 liters per square meter each time in the Populus area, 20 liters per square meter each time in the Lagerstroemia indica area, and 30 liters per square meter each time in the Manila grass area, to form a preliminary supply scheme.

[0035] According to the preliminary supply scheme, the sloping area is identified, and the slow-release irrigation method is used in combination with the fertilizer formula to expand the preliminary supply scheme to generate an intermediate supply scheme including sloping land irrigation measures, which specifically includes: first, identify the sloping area, focus on the area in the northeast of the park with obvious undulations, and preliminarily determine that it may be a sloping land. Twenty adjacent sampling points are selected from (160 meters, 0 meters) to (200 meters, 80 meters) in the area, distributed in the northeast direction, and the slope of adjacent sampling points is calculated. The slope calculation method is the height difference between two adjacent points divided by the horizontal distance between the two points, and then multiplied by 100%. For example, sampling point A (160 meters, 0 meters) has an elevation of 29.2 meters, sampling point B (180 meters, 0 meters) has an elevation of 28.6 meters, the horizontal distance between the two points is 20 meters, the elevation difference is 29.2 meters minus 28.6 meters, which is 0.6 meters, and the slope is 0.6 meters divided by 20 meters and multiplied by 100%, which is 3%. Sampling point B and sampling point C (200 meters, 0 meters) have an elevation of 28.0 meters, a horizontal distance of 20 meters, an elevation difference of 0.6 meters, and a slope of 3%. Sampling point C and sampling point D (200 meters, 20 meters) have an elevation of 27.4 meters, a horizontal distance of 20 meters, an elevation difference of 0.6 meters, and a slope of 3%. Sampling point D and sampling point E (200 meters, 40 meters) have an elevation of 26.8 meters, a horizontal distance of 20 meters, an elevation difference of 0.6 meters, and a slope of 3%. The slope of four consecutive adjacent sampling points is greater than or equal to 3% as the sloping area determination standard, so the area is determined. The Manila grass sloping area is a sloping area, and the area is measured to be 700 square meters (70 meters long, 10 meters wide, distributed along the slope direction).

[0036] Designing slow-release irrigation method, first, determine the total amount of single irrigation and split times, according to the Manila grass slope area of fertilizer formula, promote the root system is robust, each square meter total irrigation amount is 30 liters, reference slope irrigation test data, once irrigation water loss rate of 60%, split 2 times loss rate of 40%, split 3 times loss rate of 20%, in order to control the water loss rate within 20%, determine the total amount of single irrigation split into 3 times small dose irrigation, each irrigation amount is the total amount of single irrigation divided by the split times, namely 30 liters per square meter divided by 3 equals 10 liters per square meter; Second, calculate the irrigation time, using the inner diameter of 16 mm, water hole spacing 30 cm of drip irrigation tape (suitable for lawn irrigation, water evenly), its rated flow is 10 liters per square meter per hour, namely 10 liters per square meter per hour can be delivered to 1 square meter lawn, each need to irrigate 10 liters per square meter, so the irrigation time is the amount of each irrigation divided by the drip irrigation tape rated flow, namely 10 liters per square meter divided by 10 liters per square meter per hour equals 1 hour (60 minutes); Third, determine the irrigation interval, through the soil moisture monitoring, using the plug-in soil moisture meter, measure 15 cm depth soil moisture, found that 1 hour after irrigation, 15 cm depth soil moisture reaches 20%, the lower limit of suitable humidity of Manila grass, 2 hours later, the humidity is stable at 25% (suitable humidity range), so set the two irrigation interval is 2 hours, to ensure that the water of the previous irrigation is fully penetrated to the root layer, then irrigation, avoid water loss superposition; Fourth, planning of drip irrigation tape layout, along the contour direction (perpendicular to the slope direction) of the drip irrigation tape, every 3 meters, a total of 24 (slope along the slope direction long 70 meters, 3 meters interval a total of 24), the length of each drip irrigation tape and the width of the slope (10 meters) is consistent, the drip irrigation tape water inlet end connected to the main water pipe, to ensure that the water inlet pressure of each drip irrigation tape is consistent.

[0037] The Manila grass slope area is used for 3 times irrigation, 60 minutes each time, interval 2 hours, slow-release irrigation method, along the contour every 3 meters, a inner diameter of 16 mm drip irrigation tape, slope irrigation measures, supplement to the preliminary supply scheme, clear the installation position and parameters of the irrigation equipment in this area, form the intermediate supply scheme containing slope irrigation measures.

[0038] Based on the intermediate supply scheme, the slope change information in the terrain elevation data is extracted, and the irrigation pressure and time parameters are calibrated to generate a terrain-adaptive supply scheme, which specifically includes: first, subdivide the slope area and extract the slope change information, divide the Manila grass slope area into 12 small areas according to the 10m x 10m grid, select 2 diagonal sampling points in each small area, such as (160m, 0m) and (170m, 10m) in small area 1, (170m, 0m) and (180m, 10m) in small area 2, etc., calculate the average slope of each small area, for example, the two sampling points (160m, 0m) 29.2m and (170m, 0m) 28.9m in small area 1, the horizontal distance is 10m, the elevation difference is 0.3m, and the slope is 3%; small area 3 (180m, 0m) 28.6m and (190m, 0m) 28.0m, horizontal distance 10m, elevation difference 0.6m, slope 6%; small area 5 (190m, 0m) 28.0m and (200m, 0m) 27.4m, horizontal distance 10m, elevation difference 0.6m, slope 6%; small area 7 (200m, 0m) 27.4m and (210m, 0m) 26.8m, horizontal distance 10m, elevation difference 0.6m, slope 6%, adjust the slope of small area 1 to 7 to 3%, 4%, 5%, 5%, 4%, 3%, 3% respectively, reflecting the slope change.

[0039] Calibrate the irrigation pressure, select the smallest slope small area 1 (slope 3%) as the reference area, refer to the drip irrigation equipment manual, set the reference irrigation pressure to 2 kg, under this pressure, the drip irrigation belt water uniformity reaches 95%, and the water can penetrate to a depth of 15 cm, which is consistent with the main distribution layer of the Manila grass root system, according to the experience of slope irrigation, for every 0.5% increase in slope, 0.1 kg of irrigation pressure needs to be increased, because the greater the slope, the faster the water loss downward, a greater pressure is needed to push the water upward along the slope direction to ensure that the uphill side of the soil also gets enough water, calculate the target irrigation pressure for each small area, small area 2 slope 4%, 1% higher than the reference slope 3%, 1% ÷ 0.5% = 2, so the target irrigation pressure is the reference pressure 2 kg + 2 x 0.1 kg = 2.2 kg; small area 3 slope 5%, 2% higher than the reference, 2% ÷ 0.5% = 4, target irrigation pressure 2 kg + 4 x 0.1 kg = 2.4 kg; small area 4 slope 5%, consistent with small area 3, target irrigation pressure 2.4 kg; small area 5 slope 4%, target irrigation pressure 2.2 kg; small area 6, 7 slope 3%, consistent with the reference, target irrigation pressure 2 kg, install adjustable pressure valve and digital pressure gauge at the inlet of the drip irrigation belt in each small area, adjust the pressure valve manually, observe the pressure gauge value, until the pressure of each small area reaches the target value, such as small area 3 is adjusted to 2.4 kg, complete the irrigation pressure calibration.

[0040] The irrigation time is calibrated. The irrigation time of the reference area (small area 1) is 60 minutes. According to the slope change adjustment, the irrigation time is increased by 2 minutes for every 0.5% increase in slope. The area with a large slope has more sufficient time to allow water to penetrate, avoiding insufficient soil moisture due to fast runoff. The target irrigation time of each small area is calculated. The slope of small area 2 is 4%, which is 1% higher than the reference. It needs to be increased by 1% ÷ 0.5% × 2 minutes = 4 minutes. The target irrigation time is 60 minutes + 4 minutes = 64 minutes. The slope of small area 3 is 5%, which is 2% higher than the reference. It needs to be increased by 2% ÷ 0.5% × 2 minutes = 8 minutes. The target irrigation time is 60 minutes + 8 minutes = 68 minutes. Small area 4 is consistent with small area 3, and the target irrigation time is 68 minutes. The slope of small area 5 is 4%, and the target irrigation time is 64 minutes. Small areas 6 and 7 are consistent with the reference, and the target irrigation time is 60 minutes. Each small area is equipped with an electronic timer for the drip irrigation system. The timer is set to the corresponding target irrigation time. For example, small area 3 is set to 68 minutes. The soil moisture is verified after irrigation. The soil moisture at a depth of 15 cm is measured after irrigation. The soil moisture of small area 3 reaches 28% (the appropriate range is 25%-30%), which meets the requirements. The irrigation time calibration is completed. The irrigation pressure (2 kg to 2.4 kg) and irrigation time (60 minutes to 68 minutes) of the 12 small areas (corrected to 7) after calibration, as well as the installation position information of the pressure valve and the timer, are updated to the intermediate supply scheme, generating a topography-adapted supply scheme.

[0041] Integrating the drainage facilities for the low-lying area and the slow-release irrigation measures for the sloping area in the topography-adapted supply scheme to form a final supply implementation scheme that is adapted to the topographic features, specifically including: combing the core measures in the topography-adapted supply scheme, the drainage facilities for the low-lying area (low-lying Lagerstroemia indica area), 4 PVC drainage pipes with a pipe diameter of 10 cm and a wall thickness of 3 mm, buried at a depth of 0.8 m, with a spacing of 5 m and a slope of 0.5%, and connected to the main pipe network at both ends; slow-release irrigation parameters for 7 small areas in the sloping area (Manila grass sloping area), small area 1, 6, and 7: pressure 2 kg, time 60 minutes; small area 2 and 5: pressure 2.2 kg, time 64 minutes; small area 3 and 4: pressure 2.4 kg, time 68 minutes; all for 3 times of irrigation with an interval of 2 hours, and the drip irrigation tape is laid every 3 meters along the contour line; then, supplementing the irrigation scheme for the flat area, the flat area includes the poplar tree area with an area of 800 square meters, 40 meters long and 20 meters wide, and the Lagerstroemia indica shrub area flat part with an area of 300 square meters, 30 meters long and 10 meters wide, according to the fertilizer and water formula for the poplar tree area, 25 liters per square meter each time, using a drip irrigation tape with an inner diameter of 20 mm and a water outlet hole spacing of 50 cm, adapting to the tree spacing, laid along the poplar row spacing, one every 4 meters, a total of 10, 20 meters wide, 10 strips with an interval of 4 meters, each 40 meters long; the rated flow of the drip irrigation tape is 10 liters per square meter per hour, and the irrigation time is the irrigation amount per square meter divided by the flow, i.e. 25 liters per square meter divided by 10 liters per hour per square meter equals 2.5 hours, the irrigation pressure is 1.5 kg, the flat area does not need high pressure, 1.5 kg can ensure uniform water outlet.

[0042] The flat part of the purple-leaf willow shrub area is fertilized and watered with a formula of 20 liters per square meter each time, and the same 16 mm inner diameter drip irrigation tape as in the low-lying area is used, which is arranged along the shrub spacing, with one tape every 2 meters, a total of 5 tapes, 10 meters wide, 5 tapes with 2 meters spacing, each tape 30 meters long; the drip irrigation tape flow is 10 liters per square meter per hour, and the irrigation time is 20 liters per square meter divided by 10 liters per hour per square meter, which is equal to 2 hours, and the irrigation pressure is 1.5 kg; then, the timing and maintenance requirements are clearly implemented, the irrigation time is fixed every day from 6:00 am to 12:00 noon, avoiding the high temperature period, reducing water evaporation, and the implementation process is as follows: 5:30 am, check if the low-lying purple-leaf willow area drainage valve is open, and ensure that the drainage channel is unobstructed; 6:00 am, start the drip irrigation system in the poplar tree area, run for 150 minutes (8:30); 8:30, start the drip irrigation system in the flat part of the purple-leaf willow shrub area, run for 120 minutes (10:30); 9:00, in the order of small area numbers 1 to 7, start the drip irrigation system in the slope area in turn, with an interval of 2 minutes between each small area to avoid pressure fluctuations in the main water pipe, small area 1 runs to 9:60 (10:00), small area 2 runs to 10:04, small area 3 runs to 10:08, small area 4 runs to 10:12, small area 5 runs to 10:16, small area 6 runs to 10:20, and small area 7 runs to 10:24; 10:30, all irrigation systems stop running, check the low-lying area for water accumulation, keep the drainage valve open until 12:00, and make sure that the accumulated water is completely drained.

[0043] Check if the drainage pipe is blocked every Monday morning, inject 50 liters of clean water into the drainage pipe, and observe the drainage speed, if the speed is less than 4000 liters per hour, use a high-pressure water gun to flush the pipe; check the drip irrigation tape outlet every two weeks on Wednesday afternoon, if it is found to be blocked (uneven water outlet), soak the drip irrigation tape in clean water for 1 hour and then flush it; finally, all the above contents are arranged into a structured plan, including the area name, terrain type, area, fertilizer and water formula (irrigation amount per square meter each time), irrigation equipment (type, specification, layout density), irrigation parameters (pressure, time, frequency, interval), drainage facilities (type, specification, layout), implementation timing, maintenance requirements, etc., to form the final fertilizer and water supply implementation plan that matches the terrain characteristics.

[0044] Step 220 identifies the low-lying area by accurately collecting elevation data, calculates the total water quantity based on irrigation quantity and rainfall, and designs matching drainage facilities, solving the problem of long-term accumulation of water in the low-lying area in traditional irrigation, causing the purple-leaf willow tree roots to rot, creating a suitable water environment for plants in the low-lying area, and ensuring the healthy growth of the roots.

[0045] The slope area is identified by calculating the slope of adjacent sampling points, and the single irrigation amount is divided into multiple slow-release irrigations, so that the water penetrates to the root layer step by step, meets the water demand of the healthy growth of the lawn root system, avoids growth inhibition caused by water shortage, and accurately calibrates the irrigation pressure and time according to the slope change of different small areas of the slope, which prevents the water shortage and root absorption of the area with large slope, and avoids the excessive water and poor soil permeability of the area with small slope. The integration of the depression area drainage, the slow-release irrigation of the slope area and the conventional irrigation measures of the flat area, the clear implementation of the timing and maintenance requirements, make the plants in the depression, slope and flat areas of the park grow in the suitable fertilizer and water supply conditions, avoid the plant growth problems caused by improper terrain adaptation, and ensure the overall landscape effect of the park.

[0046] In a preferred embodiment of the present application, according to the fertilizer and water supply scheme, a plurality of source dynamic sensing nodes are arranged in the maintenance area to construct a monitoring network covering different microenvironments, which can include: According to the fertilizer and water supply scheme, the tree area, shrub area and lawn area are identified, and soil humidity sensors, temperature sensors and light sensors are respectively arranged in the corresponding areas to generate an initial node layout scheme, which specifically includes: first, according to the plant distribution map of the park and the field survey results, the tree area, shrub area and lawn area in the maintenance area are clearly distinguished, wherein the tree area takes poplar as the main identification mark, and is demarcated by measuring the range with a tree trunk base diameter greater than 10 cm and a tree height exceeding 6 m; the shrub area takes the purple willow tree as the identification mark, and is demarcated by measuring the range with a base diameter of 3 to 10 cm and a tree height of 1.5 to 6 m; the lawn area takes Manila grass as the identification mark, and is demarcated by confirming the range of herbaceous plants with a ground cover height of 5 to 10 cm and continuous growth.

[0047] In the tree area, the number of soil humidity sensors is determined according to the standard of arranging 3 soil humidity sensors per 100 square meters, and the sensors are buried at a position 1.5 to 2 meters away from the tree trunk within the range of the poplar crown projection, with a burial depth of 40 to 60 cm, which corresponds to the distribution area of the main poplar absorbing roots; meanwhile, 2 temperature sensors are arranged per 200 square meters in the tree area, which are installed on the tree trunk 2 meters away from the ground to avoid direct sunlight; 1 light sensor is arranged per 200 square meters, which is installed on the unobstructed support at the edge of the tree area, with a height level with the middle part of the poplar crown.

[0048] In the shrub area, according to the standard determination quantity of 3 soil humidity sensors arranged per 80 square meters, the sensors are buried at a position within the crown projection range of Lagerstroemia indica tree, 0.8-1.2 meters away from the trunk, with a burial depth of 20-30 cm, corresponding to the main distribution area of the root system of Lagerstroemia indica tree; 2 temperature sensors are arranged per 150 square meters and installed on the trunk of Lagerstroemia indica tree 1 meter high from the ground; 1 light sensor is arranged per 150 square meters and installed on a support 1.5 meters high above the shrub area, ensuring that the light received by the canopy layer of Lagerstroemia indica can be captured.

[0049] In the lawn area, according to the standard determination quantity of 2 soil humidity sensors arranged per 50 square meters, the sensors are buried at a depth of 5-10 cm where the Manila grass root system is distributed, and are evenly distributed in the lawn area; 2 temperature sensors are arranged per 100 square meters and installed on a support 0.5 meters high from the lawn surface; 1 light sensor is arranged per 100 square meters and installed on a support 1 meter high from the lawn surface, avoiding obstruction; according to the above deployment standard, the types and quantities of sensors required for each area are counted to form an initial node layout scheme.

[0050] Based on the initial node layout scheme, the sensor nodes arranged in each subarea are connected to the central controller through a wireless network to establish a preliminary monitoring network for real-time data acquisition, specifically including: based on the generated initial node layout scheme, a unique identification number is assigned to each sensor node, the number containing an area type code and a serial number, wherein the code for the arbor area is QM, the code for the shrub area is GM, and the code for the lawn area is CP, then a wireless network is configured for each sensor node, and LoRa wireless network technology is selected, which is suitable for low-power and long-distance data transmission; the soil humidity sensors, temperature sensors and light sensors arranged in each subarea are connected through a wireless network, the specific operation being to first start the wireless network receiving function of the central controller, then start the wireless network sending function of each sensor node in turn, and pair the sensor nodes with the central controller through the identification number to ensure that each node can be accurately identified by the central controller.

[0051] After pairing, the communication stability between each sensor node and the central controller is tested, and test signals are sent continuously for 3 times, if all can be correctly received by the central controller, it is determined that the connection is successful; if there is a receiving failure, check whether the position of the sensor node is blocked by signal, adjust the position and retest until the connection is successful; after the connection is successful, set the data acquisition frequency to once every 5 minutes, the soil humidity sensor collects soil volume moisture content data, the temperature sensor collects air temperature data, and the light sensor collects photosynthetically active radiation data, which are transmitted to the central controller in real time through the wireless network, thereby establishing a preliminary monitoring network for real-time data acquisition.

[0052] Based on the preliminary monitoring network, the distribution density and installation position of the sensor nodes are adjusted according to the microenvironment difference characteristics of each subarea, and an adjusted monitoring network configuration is generated, which specifically includes: based on the microenvironment data collected after the preliminary monitoring network runs for 24 hours, combined with the observed microenvironment difference characteristics, for the arbor area, if the soil humidity data difference between the area near the depression and the area on the slope exceeds 20%, it indicates that the microenvironments of the two subareas are significantly different, and the distribution density of the sensors needs to be adjusted, in the arbor area near the depression, one soil humidity sensor is added every 50 square meters, and in the arbor area on the slope, one soil humidity sensor is also added every 50 square meters, so as to more accurately capture the humidity change.

[0053] For the shrub area, if the light data difference between the densely planted area and the sparse planted area exceeds 30%, one light sensor is added every 75 square meters in the densely planted shrub area, and the installation position is adjusted to the middle of the shrub canopy to ensure that the actual received light can be reflected; in the sparsely planted shrub area, the original density is maintained, but the installation height of the light sensor is reduced by 0.3 meters to adapt to the difference in light conditions.

[0054] For the lawn area, for the depression part, because the soil has good water retention, the water change is slow, the original density of two soil humidity sensors per 50 square meters is adjusted to two per 75 square meters, and the sensor burial depth is increased by 5 centimeters to monitor the soil humidity of the deeper layer; for the slope part, because the water loss is fast, the density is adjusted to two per 30 square meters, and the sensor burial depth is reduced by 3 centimeters, which is closer to the surface root distribution area.

[0055] For the temperature sensor, if the temperature difference between the position near the building and the open position in the arbor area exceeds 3℃, one temperature sensor is added in the arbor area near the building, and the installation position is moved 0.5 meters towards the building; the positions of the temperature sensors in other areas remain unchanged. Through the above adjustment, the adjusted monitoring network configuration is generated.

[0056] The sensor node layout of each subarea in the monitoring network configuration is integrated to form a complete monitoring network covering different microenvironments, which specifically includes: integrating the sensor node layout of the arbor area, shrub area and lawn area in the adjusted monitoring network configuration, first, the type, number, identification number and specific installation position information of the sensors in each subarea are summarized to make a unified layout, and then it is checked whether there is a monitoring blind area at the boundary between each subarea, for example, the edge zone between the arbor area and the shrub area, if the width of the zone exceeds 2 meters and no sensor is deployed, one soil humidity sensor and one temperature sensor are added every 10 meters at the boundary, the soil humidity sensor is buried at the middle value of the two areas, and the temperature sensor is installed at the middle value of the two areas.

[0057] Then, the area with large topographic changes, such as the transition zone of the depression and the slope, is checked. If the length of the transition zone exceeds 5 meters, one soil moisture sensor is added every 5 meters in the transition zone to capture the gradient of soil moisture with the change of topography. In the integration process, it is ensured that the wireless network of all sensor nodes can be stably connected to the central controller. The pairing and testing process is repeated for the newly added sensor nodes to ensure smooth data transmission. Finally, the integrated monitoring network is tested as a whole for 12 hours of continuous operation to check the integrity and accuracy of data acquisition of each node. If there are missing or abnormal nodes, their positions are adjusted or the equipment is replaced until all nodes can work normally. Finally, a complete monitoring network covering different plant areas, different topographic features and different microenvironments is formed.

[0058] The construction process of the monitoring network can accurately cover the arbor area, shrub area and lawn area in the maintenance area, fully considers the growth environment requirements of different plants, makes the monitoring of key environmental parameters such as soil moisture, temperature and light more suitable for the actual growth conditions of poplar, crape myrtle, and Manila grass, and through dynamic adjustment of the distribution density and installation position of the sensor nodes, the microenvironment differences caused by different topographic zones such as depression and slope can be effectively captured. The complete monitoring network can collect environmental data of each area in real time and accurately, promote the growth of various plants in suitable environment, and improve the overall maintenance effect of landscaping.

[0059] In a preferred embodiment of the present application, the soil moisture sensor deployed in real time monitors the soil water content, and dynamically adjusts the fertilizer supply and irrigation frequency in combination with meteorological data to obtain real-time monitoring data, which can include: The real-time soil moisture data is obtained based on the complete monitoring network, and the deviation value between the current soil water content and the preset ideal water content is calculated, specifically including: first, through the soil moisture sensors deployed in each region in the complete monitoring network, real-time soil moisture data is collected, each sensor transmits data to the central controller every 5 minutes, the controller processes the data of multiple sensors in the same region, calculates the average soil water content of the region, and the calculation method is to add the soil water content data collected by all soil moisture sensors in a region, and then divide the number of soil moisture sensors in the region to obtain the current average soil water content of the region; then according to different plant types and terrain characteristics, the preset ideal water content range of each region is set, wherein the preset ideal water content range of the arbor area where poplar trees are located is 60% to 70% of the soil field water capacity, and the upper limit of the preset ideal water content of the slope arbor area is 5 percentage points higher than that of the low-lying arbor area, because the water loss of the slope is fast, and a slightly higher water content needs to be maintained; the preset ideal water content range of the shrub area where Lagerstroemia indica trees are located is 55% to 65% of the soil field water capacity, and the upper limit of the preset ideal water content of the slope shrub area is 4 percentage points higher than that of the low-lying shrub area; the preset ideal water content range of the lawn area where Manila grass is located is 50% to 60% of the soil field water capacity, and the upper limit of the preset ideal water content of the slope lawn area is 3 percentage points higher than that of the low-lying lawn area.

[0060] Then the deviation value between the current soil water content and the preset ideal water content is calculated, taking the regional average soil water content as the current value, if the current value is within the preset ideal water content range, the deviation value is 0; if the current value is higher than the upper limit of the preset ideal water content, the deviation value is the current value minus the upper limit of the preset ideal water content, and the result is a positive value, representing that the soil is wet; if the current value is lower than the lower limit of the preset ideal water content, the deviation value is the current value minus the lower limit of the preset ideal water content, and the result is a negative value, representing that the soil is dry, for example, the current average soil water content of the slope arbor area is 55% of the field water capacity, and the lower limit of the preset ideal water content is 60%, so the deviation value is 55% minus 60%, equal to negative 5 percentage points, indicating that the soil in this region is dry.

[0061] Based on the deviation value, combined with the precipitation, evaporation and temperature information in real-time weather data, the future period soil moisture change trend is predicted to obtain the soil moisture change trend prediction result, including based on the deviation value, the soil moisture trend prediction is performed, and the real-time monitored precipitation, evaporation and temperature information are combined as a prediction basis; the deviation value and the weather data are calculated through a predefined water change calculation rule to obtain the continuous change value of the soil water content in the future period; according to the continuous change value, the overall change trend of the soil water content in the future period is determined, and the change trend is analyzed to judge the predicted falling speed of the soil water content and the predicted time of reaching the critical point of water demand; specifically, based on the obtained deviation value, combined with the real-time weather data obtained from the local meteorological department, including the predicted precipitation in the next 24 hours, the real-time evaporation and real-time temperature information, the soil moisture change trend in the next 24 hours is predicted, first, the precipitation data is processed, the weather data will provide the predicted precipitation in the next 24 hours, if it is predicted to have rainfall, the actual effective precipitation needs to be adjusted according to the regional terrain, among them, the effective precipitation of the low-lying land is 90% of the predicted precipitation, that is, the effective precipitation is equal to the predicted precipitation multiplied by 90%; the effective precipitation of the slope land is 60% of the predicted precipitation, that is, the effective precipitation is equal to the predicted precipitation multiplied by 60%; the effective precipitation of the flat area is 80% of the predicted precipitation, that is, the effective precipitation is equal to the predicted precipitation multiplied by 80%.

[0062] Then the evaporation data is processed, the evaporation is related to the real-time temperature, first, the basic evaporation of each region is set, the basic evaporation of the arbor zone is 5mm per day, the basic evaporation of the shrub zone is 4.5mm per day, and the basic evaporation of the lawn zone is 4mm per day, then the evaporation is adjusted according to the difference between the real-time temperature and 25 degrees Celsius, for every 1 degree Celsius higher than 25 degrees Celsius, the evaporation increases by 5% based on the basic evaporation, and for every 1 degree Celsius lower than 25 degrees Celsius, the evaporation decreases by 3% based on the basic evaporation; for example, the real-time temperature of the arbor zone is 28 degrees Celsius, the temperature difference is 3 degrees Celsius, and the increased evaporation is 5mm of the basic evaporation multiplied by 3 multiplied by 5%, that is, 0.75mm, at this time, the real-time evaporation of the arbor zone is 5mm plus 0.75mm, equal to 5.75mm; if the real-time temperature is 22 degrees Celsius, the temperature difference is negative 3 degrees Celsius, and the decreased evaporation is 5mm multiplied by 3 multiplied by 3%, that is, 0.45mm, at this time, the real-time evaporation is 5mm minus 0.45mm, equal to 4.55mm, at the same time, the evaporation of the low-lying land is 20% less than that of the flat area of the same plant type, that is, the evaporation of the low-lying land is equal to the evaporation of the flat area of the same plant type multiplied by 80%; the evaporation of the slope land is 20% more than that of the flat area of the same plant type, that is, the evaporation of the slope land is equal to the evaporation of the flat area of the same plant type multiplied by 120%.

[0063] Then the soil moisture content change in the next 24 hours is calculated, based on the current soil moisture content, plus the soil moisture content increment corresponding to the effective precipitation, minus the soil moisture content decrement corresponding to the real-time evaporation, to obtain the predicted soil moisture content at the end of the next 24 hours, wherein the soil moisture content increment corresponding to the precipitation is calculated by multiplying the effective precipitation in millimeters by the soil bulk density, which is set to 1.3 grams per cubic centimeter, by the effective soil layer thickness, which is 60 centimeters for the arbor area, 30 centimeters for the shrub area, and 10 centimeters for the lawn area, and then divided by the maximum soil water holding capacity, and finally converted to a percentage of the field water holding capacity; the soil moisture content decrement corresponding to the evaporation is calculated in the same way as the increment, except that the result is negative.

[0064] Finally, according to the comparison between the predicted soil moisture content at the end of the next 24 hours and the preset ideal moisture content range, the soil moisture change trend is determined. If the predicted moisture content is within the ideal range, the trend is stable; if the predicted moisture content is higher than the ideal upper limit, the trend is continuously wet; if the predicted moisture content is lower than the ideal lower limit, the trend is continuously dry.

[0065] Based on the prediction result of the soil moisture change trend, an adjustment scheme for irrigation amount and irrigation time interval is automatically generated, which specifically includes: first, adjust the irrigation amount. If the predicted trend is continuously dry, i.e. the predicted soil moisture content at the end of the next 24 hours is lower than the preset ideal lower limit of moisture content, the irrigation amount that needs to be supplemented is calculated. The calculation method of the irrigation amount is as follows: first, calculate the difference between the preset ideal lower limit of moisture content and the predicted soil moisture content, which is the soil moisture content percentage that needs to be supplemented; then multiply this percentage by the soil bulk density (1.3 grams per cubic centimeter) by the effective soil layer thickness (60 centimeters for the arbor area, 30 centimeters for the shrub area, and 10 centimeters for the lawn area) corresponding to the area, by the area of the region, to obtain the total water weight that needs to be supplemented; finally, convert the water weight to volume, since the density of water is 1 gram per cubic centimeter, the total water weight in grams is equal to the total irrigation volume in cubic centimeters, and then convert the cubic centimeters to liters, i.e. 1000 cubic centimeters is equal to 1 liter, to obtain the final irrigation amount; for example, the area of the grassland in the slope area is 100 square meters, the preset ideal lower limit of moisture content is 50%, and the predicted soil moisture content is 40%, the difference is 10%; the water weight that needs to be supplemented is 10% multiplied by 1.3 grams per cubic centimeter multiplied by 10 centimeters multiplied by 100 square meters (converted to 1000000 square centimeters), which is equal to 10% multiplied by 1.3 multiplied by 10 multiplied by 1000000, which is equal to 1300000 grams; converted to liters is 1300 liters, i.e. the area needs to be irrigated 1300 liters, if the predicted trend is continuously wet, no irrigation is needed, and the irrigation amount is set to 0; if the trend is stable, the original irrigation amount is maintained.

[0066] The irrigation time interval is adjusted again. The original irrigation time interval is set as once every 3 days for the arbor area, once every 2 days for the shrub area, and once every 1 day for the lawn area. If the predicted trend is continuously dry, and the absolute value of the deviation is large (more than 10 percentage points), the irrigation time interval is shortened. The arbor area is shortened to once every 2 days, the shrub area is shortened to once every 1 day, and the lawn area is shortened to once every 12 hours. If the absolute value of the deviation is small (5 to 10 percentage points), the irrigation time interval is slightly shortened. The arbor area is once every 2.5 days, the shrub area is once every 1.5 days, and the lawn area is once every 18 hours. If the predicted trend is continuously wet, and the deviation is positive and more than 5 percentage points, the irrigation time interval is lengthened. The arbor area is lengthened to once every 4 days, the shrub area is lengthened to once every 3 days, and the lawn area is lengthened to once every 2 days. If the deviation is positive and between 3 and 5 percentage points, the arbor area is once every 3.5 days, the shrub area is once every 2.5 days, and the lawn area is once every 1.5 days. If the trend is stable, the original irrigation time interval is maintained. At the same time, the terrain characteristics are adjusted. If the slope needs to be shortened, it is shortened by 10% compared to the same plant type on flat land. If the depression needs to be lengthened, it is lengthened by 10% compared to the same plant type on flat land.

[0067] The adjustment scheme is integrated with the fertilizer and water formula to generate real-time monitoring data of fertilizer and water supply suitable for the current environmental conditions. Specifically, the generated irrigation amount and irrigation time interval adjustment scheme are integrated with the previously developed fertilizer and water formula for different plant areas to generate real-time monitoring data of fertilizer and water supply suitable for the current environmental conditions. First, the basic fertilizer and water formula for each area is determined. The arbor area (poplar) fertilizer and water formula is a mixed fertilizer with nitrogen content of 18%, phosphorus content of 8%, potassium content of 12%, and organic matter of 5%. 2 grams of the fertilizer are added to each liter of irrigation water. The shrub area (crape myrtle tree) fertilizer and water formula is a mixed fertilizer with nitrogen content of 12%, phosphorus content of 10%, potassium content of 15%, and organic matter of 8%. 1.8 grams of the fertilizer are added to each liter of irrigation water. The lawn area (Manila grass) fertilizer and water formula is a mixed fertilizer with nitrogen content of 20%, phosphorus content of 6%, potassium content of 10%, and organic matter of 3%. 1.5 grams of the fertilizer are added to each liter of irrigation water.

[0068] Then, the required fertilizer amount is calculated according to the adjusted irrigation amount, and the fertilizer amount is equal to the adjusted irrigation amount (L) multiplied by the fertilizer added per liter of irrigation water in the corresponding area, for example, the adjusted irrigation amount of the slope lawn area is 1300 L, and 1.5 g of fertilizer is added per liter, so the fertilizer amount is 1300 L multiplied by 1.5 g per liter, which is equal to 1950 g, that is, 1950 g of special fertilizer for lawn area needs to be added; then, all data are integrated to form real-time monitoring data, including the current average soil water content of each area, the deviation value of the soil water content from the preset ideal water content, the prediction result of the future 24-hour soil moisture change trend, the adjusted irrigation amount, the adjusted irrigation time interval, the fertilizer and water formula components of the corresponding area, and the calculated fertilizer amount; at the same time, the data collection time, meteorological data (precipitation, evaporation, temperature) and the basis for formulating the adjustment scheme are recorded to ensure that all data are one-to-one corresponding, forming a complete real-time fertilizer and water supply monitoring data file.

[0069] The soil moisture change of different plant areas and different terrains is accurately captured, the fertilizer and water supply parameters are dynamically adjusted combined with meteorological data, the resource waste and poor effect caused by unified irrigation and fertilization in traditional maintenance are reduced, the water content can be supplemented by calculating the deviation value and the future moisture trend, the continuous water shortage of the slope due to fast water loss is prevented, the excessive wetting of the depression due to water accumulation is also avoided, the growth environment of different plant root systems is suitable, after the adjustment scheme and the fertilizer and water formula are integrated, the fertilizer can be accurately supplied with irrigation, the demand of poplar for nitrogen fertilizer, the demand of purple willow flower tree for phosphorus and potassium fertilizer, and the demand of Manila grass for root system maintenance related components are met, the healthy growth of various plants is promoted, and the overall landscape effect of the park is improved.

[0070] In a preferred embodiment of the present application, based on the real-time monitoring data, spatial correlation analysis is performed on the monitoring area to generate comprehensive adjustment parameters, and the adjustment parameters are used to dynamically correct the fertilizer and water supply amount and the irrigation frequency to obtain the corrected fertilizer and water supply amount and the irrigation frequency, which can include: Based on real-time monitoring data, the soil moisture and nutrient data are analyzed by spatial interpolation to form the soil moisture spatial distribution data and the soil nutrient spatial distribution data. Specifically, first, the real-time monitoring data of the past 24 hours are extracted from the database of the complete monitoring network. The data include the soil moisture percentage collected by the soil humidity sensors in each region, such as the soil moisture percentage collected by the sensors in the arbor area, the soil moisture percentage collected by the sensors in the shrub area, and the soil moisture percentage collected by the sensors in the lawn area. The data also include the soil nitrogen, phosphorus, and potassium content percentages collected by the nutrient sensors.

[0071] Then, spatial interpolation analysis is carried out. For each grid, the nearest three sensor data of the same type in the surrounding area (same plant + same terrain) are selected as the calculation basis. The arithmetic mean of the three sensor data is calculated first. The calculation method is to add the first sensor data, the second sensor data, and the third sensor data, and then divide by 3. Then, the weight is assigned according to the distance from the grid to each sensor. The closer the distance, the higher the weight. The weight of the sensor within 1 meter is set to 0.5, the weight of the sensor between 1 meter and 2 meters is set to 0.3, and the weight of the sensor between 2 meters and 3 meters is set to 0.2. Finally, each sensor data is multiplied by the corresponding weight, and the three results are added to obtain the soil moisture value and nutrient value of the grid. For example, the soil moisture values of the three sensors around a certain arbor area grid on a slope are 55%, 58%, and 56%, respectively, and the distances from the grid to the three sensors are 1 meter, 1.5 meters, and 2.5 meters, respectively. The average value is calculated first, which is (55% + 58% + 56%) ÷ 3 = 56.33%. Then, the weight is calculated as 55% × 0.5 + 58% × 0.3 + 56% × 0.2, which is 27.5% + 17.4% + 11.2%, equaling 56.1%. This value is the soil moisture value of the grid.

[0072] After processing all the grids by the above method, the soil moisture values of each grid are marked on the corresponding geographical location to form the soil moisture spatial distribution data, such as the soil moisture in the arbor area grid in the lowland being mostly above 70% and the soil moisture in the lawn area grid on the slope being mostly below 40%. Similarly, the nitrogen, phosphorus, and potassium content values of each grid are marked on the corresponding location to form the soil nutrient spatial distribution data, such as the nitrogen content in the arbor area grid being mostly between 15% and 18% and the phosphorus content in the shrub area grid being mostly between 8% and 10%).

[0073] Based on the soil moisture spatial distribution data and the soil nutrient spatial distribution data, the hot and cold areas of fertilizer and water demand are identified through spatial correlation analysis, and regional demand spatial characteristic data are generated, specifically including: based on the formed soil moisture spatial distribution data and soil nutrient spatial distribution data, first determine the fertilizer and water demand judgment standard of different plant regions, which is combined with the plant growth demand and the preset ideal value in the background technology. The soil moisture of arbor area (poplar) is less than 10% of the lower limit of preset ideal moisture content (60%) or more (i.e. ≤50%), or the nitrogen content is less than 5% of the formula requirement (18%) or more (i.e. ≤13%), which is determined as high fertilizer and water demand; the soil moisture is more than 10% of the upper limit of the preset ideal moisture content (70%) or more (i.e. ≥77%), or the nitrogen content is more than 5% of the formula requirement (18%) or more (i.e. ≥18.9%), which is determined as low fertilizer and water demand.

[0074] The soil moisture of shrub area (purple willow tree) is less than 10% of the lower limit of preset ideal moisture content (55%) or more (i.e. ≤49.5%), or the phosphorus content is less than 5% of the formula requirement (10%) or more (i.e. ≤5%), which is determined as high fertilizer and water demand; the soil moisture is more than 10% of the upper limit of the preset ideal moisture content (65%) or more (i.e. ≥71.5%), or the phosphorus content is more than 5% of the formula requirement (10%) or more (i.e. ≥10.5%), which is determined as low fertilizer and water demand.

[0075] The soil moisture of lawn area (Manila grass) is less than 10% of the lower limit of preset ideal moisture content (50%) or more (i.e. ≤40%), or the potassium content is less than 5% of the formula requirement (10%) or more (i.e. ≤5%), which is determined as high fertilizer and water demand; the soil moisture is more than 10% of the upper limit of the preset ideal moisture content (60%) or more (i.e. ≥66%), or the potassium content is more than 5% of the formula requirement (10%) or more (i.e. ≥10.5%), which is determined as low fertilizer and water demand.

[0076] Subsequently, spatial correlation analysis is performed, and the demand determination results of each grid are checked one by one. Three or more adjacent geographical positions are divided into a whole area, which is called a fertilizer and water demand hotspot area, if they are all determined to have high fertilizer and water demand. Three or more adjacent geographical positions are divided into a whole area, which is called a fertilizer and water demand cold spot area, if they are all determined to have low fertilizer and water demand. For example, the soil moisture of six adjacent grids in the slope lawn area is 38% (≤40%), and the potassium content is 4.5% (≤5%). Therefore, the six grids constitute a slope hotspot area in the lawn area. The soil moisture of four adjacent grids in the depression tree area is 78% (≥77%), and the nitrogen content is 19% (≥18.9%). Therefore, the four grids constitute a depression cold spot area in the tree area. Finally, the specific information of each hotspot area and cold spot area is recorded, including the area location, such as the northwest slope lawn area of the park, the southeast depression tree area of the park, the area range, the number of grids included and the corresponding area, such as 8 grids, an area of 32 square meters, the demand type, the water shortage, the nutrient shortage, or the water surplus, the nutrient surplus, the specific shortage or surplus value, such as an average water shortage of 12% in the hotspot area, an average nitrogen shortage of 4%, an average water surplus of 8% in the cold spot area, and an average phosphorus surplus of 2%. These information is collected and summarized to generate regional demand spatial feature data.

[0077] Based on the regional demand spatial feature data, the difference ratio of the demand of the hotspot area and the cold spot area is calculated, and a comprehensive adjustment parameter set including the irrigation amount correction coefficient and the irrigation frequency adjustment parameter is automatically generated. Specifically, based on the generated regional demand spatial feature data, the difference ratio of the fertilizer and water demand of each hotspot area and cold spot area is calculated. The calculation process is divided into two categories. For the fertilizer and water demand hotspot area, the water demand difference ratio and the nutrient demand difference ratio are calculated. The water demand difference ratio is calculated by subtracting the average soil moisture of the hotspot area from the preset lower limit of the ideal water content to obtain the water shortage value. Then, the water shortage value is divided by the preset lower limit of the ideal water content, and the result is the water demand difference ratio. For example, the preset lower limit of the ideal water content of the tree area hotspot area is 60%, and the average soil moisture is 50%. The water shortage value is 60% minus 50%, which is 10%. The water demand difference ratio is 10% divided by 60%, which is approximately 16.67%.

[0078] The nutrient requirement difference ratio is obtained by subtracting the average nutrient content of the hotspot region from the formula nutrient requirement value of the region, and then dividing the nutrient gap value by the formula nutrient requirement value. For example, the formula phosphorus requirement of the hotspot region in the shrub area is 10%, the average phosphorus content is 4.8%, the nutrient gap value is 10% minus 4.8% equal to 5.2%, and the nutrient requirement difference ratio is 5.2% divided by 10% equal to 52%. The larger value of the water requirement difference ratio and the nutrient requirement difference ratio of each hotspot region is taken as the overall fertilizer and water requirement difference ratio of the hotspot region. For example, the overall requirement difference ratio of the hotspot region in the tree area is 16.67%, and the overall requirement difference ratio of the hotspot region in the shrub area is 52%.

[0079] For the cold spot region of fertilizer and water requirement, the water requirement difference ratio and the nutrient requirement difference ratio need to be calculated. The water requirement difference ratio is obtained by subtracting the preset ideal upper limit of water content from the average soil water content of the cold spot region to obtain the water surplus value. Then, the water surplus value is divided by the preset ideal upper limit of water content, and the result is the water requirement difference ratio, which is a negative value representing surplus. For example, the preset ideal upper limit of water content of the cold spot region in the depression tree area is 70%, the average soil water content is 78%, the water surplus value is 78% minus 70% equal to 8%, and the water requirement difference ratio is 8% divided by 70% equal to about 11.43%, recorded as -11.43%. The nutrient requirement difference ratio is obtained by subtracting the formula nutrient requirement value of the region from the average nutrient content of the cold spot region to obtain the nutrient surplus value. Then, the nutrient surplus value is divided by the formula nutrient requirement value, and the result is the nutrient requirement difference ratio, which is a negative value representing surplus. For example, the formula potassium requirement of the cold spot region in the lawn area is 10%, the average potassium content is 11%, the nutrient surplus value is 11% minus 10% equal to 1%, and the nutrient requirement difference ratio is 1% divided by 10% equal to 10%, recorded as -10%.

[0080] Take the absolute value of the larger value of the moisture demand difference ratio and the nutrient demand difference ratio of each cold spot area as the overall fertilizer and water demand difference ratio of the cold spot area (negative values are retained), such as the overall demand difference ratio of the cold spot area in the above-mentioned depression tree area, which is -11.43%, and the overall demand difference ratio of the cold spot area in the lawn area, which is -10%; then generate a comprehensive adjustment parameter set according to the overall fertilizer and water demand difference ratio, including an irrigation amount correction coefficient and an irrigation frequency adjustment parameter. For hot spot areas, the irrigation amount correction coefficient is equal to 1 plus the overall demand difference ratio (the ratio is converted to a decimal); for cold spot areas, the irrigation amount correction coefficient is equal to 1 plus the overall demand difference ratio (negative value, i.e. 1 minus the absolute value of the difference ratio); for example, the overall demand difference ratio of the hot spot area is 52%, and the irrigation amount correction coefficient is 1 plus 0.52, which equals 1.52; the overall demand difference ratio of the cold spot area is -11.43%, and the irrigation amount correction coefficient is 1 plus (-0.1143), which equals 0.8857.

[0081] The irrigation frequency adjustment parameter is based on the initial irrigation interval of each area (the initial interval of the tree area is 3 days, the initial interval of the shrub area is 2 days, and the initial interval of the lawn area is 1 day). The hot spot area needs to shorten the interval, and the adjusted interval is equal to the initial interval multiplied by (1 minus the overall demand difference ratio); the cold spot area needs to lengthen the interval, and the adjusted interval is equal to the initial interval multiplied by (1 minus the overall demand difference ratio) (since the difference ratio is negative, it is actually the initial interval multiplied by 1 plus the absolute value of the difference ratio); for example, the initial interval of the shrub area hot spot area is 2 days, the overall demand difference ratio is 52%, and the adjusted interval is 2 days multiplied by (1 minus 0.52), which equals 0.96 days; the initial interval of the depression tree area cold spot area is 3 days, the overall demand difference ratio is -11.43%, and the adjusted interval is 3 days multiplied by (1 minus (-0.1143)), which equals 3 days multiplied by 1.1143, approximately equal to 3.34 days; finally, the irrigation amount correction coefficient and the adjusted irrigation interval, i.e. the irrigation frequency adjustment parameter, of all areas are classified and arranged according to area type, tree area, shrub area, lawn area, and terrain, depression, slope, and flat ground, to form a comprehensive adjustment parameter set covering the entire maintenance area.

[0082] The comprehensive adjustment parameter set is applied to the fertilizer and water supply scheme to dynamically correct the irrigation amount and irrigation frequency to obtain the corrected fertilizer and water supply amount and irrigation frequency. Specifically, first, the initial fertilizer and water supply amount and initial irrigation frequency of each region are extracted from the previously formulated fertilizer and water supply scheme. The initial fertilizer and water supply amount includes the initial irrigation amount, such as 10 liters per square meter for the arbor region, 8 liters per square meter for the shrub region, and 6 liters per square meter for the lawn region, and the initial fertilizer amount, which is calculated according to the initial irrigation amount and the formula concentration, such as adding 2 grams of special fertilizer per liter of irrigation water for the arbor region, and the initial fertilizer amount is 10 liters x 2 grams / liter = 20 grams / square meter. The initial irrigation frequency is the initial irrigation interval of each region, which is 3 days for the arbor region, 2 days for the shrub region, and 1 day for the lawn region.

[0083] Then, the irrigation amount correction coefficient in the comprehensive adjustment parameter set is applied to the initial irrigation amount and the initial fertilizer amount to calculate the corrected fertilizer and water supply amount. The corrected irrigation amount is obtained by multiplying the initial irrigation amount of each region by the corresponding irrigation amount correction coefficient. For example, the initial irrigation amount of the hot spot region in the shrub region is 8 liters / square meter, the correction coefficient is 1.52, and the corrected irrigation amount is 8 liters x 1.52 = 12.16 liters / square meter. The initial irrigation amount of the cold spot region in the arbor region of the depression is 10 liters / square meter, the correction coefficient is 0.8857, and the corrected irrigation amount is 10 liters x 0.8857 ≈ 8.86 liters / square meter. The corrected fertilizer amount is proportional to the fertilizer amount and the irrigation amount, and is calculated by multiplying the corrected irrigation amount by the fertilizer concentration of the corresponding region. For example, the corrected irrigation amount of the hot spot region in the lawn region is 6 liters x 1.3 (correction coefficient) = 7.8 liters / square meter, and the fertilizer amount is 7.8 liters x 1.5 grams / liter = 11.7 grams / square meter. The corrected irrigation amount of the cold spot region in the lawn region is 6 liters x 0.9 (correction coefficient) = 5.4 liters / square meter, and the fertilizer amount is 5.4 liters x 1.5 grams / liter = 8.1 grams / square meter.

[0084] Then, the irrigation frequency adjustment parameter (adjusted irrigation interval) in the comprehensive adjustment parameter set is used as the corrected irrigation frequency, and the terrain characteristics are fine-tuned. In the slope region, water loss is fast, so even in the hot spot region, the corrected irrigation interval is shortened by 10%, i.e. the corrected interval is multiplied by 0.9. In the depression region, water is easy to accumulate, so even in the cold spot region, the corrected irrigation interval is extended by 10%, i.e. the corrected interval is multiplied by 1.1. For example, the corrected interval of the hot spot region in the arbor region of the slope is 3 days x (1-0.1667) = 2.5 days, and after fine-tuning, it is 2.5 days x 0.9 = 2.25 days. The corrected interval of the cold spot region in the lawn region of the depression is 1 day x (1-(-0.1)) = 1.1 days, and after fine-tuning, it is 1.1 days x 1.1 = 1.21 days.

[0085] Finally, the corrected irrigation amount, the corrected fertilizer amount (both of which jointly constitute the corrected fertilizer-water supply amount) and the corrected irrigation frequency are summarized and classified by region. For example, in the arbor area of the hot spot region of the slope, the corrected irrigation amount is 11.6 liters per square meter, the fertilizer amount is 23.2 grams per square meter, and the irrigation frequency is 2.25 times per day. In the shrub area of the cold spot region of the depression, the corrected irrigation amount is 7.1 liters per square meter, the fertilizer amount is 12.78 grams per square meter, and the irrigation frequency is 2.42 times per day. The correction basis, such as the difference ratio of the demand of the corresponding region and the correction coefficient, is recorded to ensure traceability of the data. Finally, the corrected fertilizer-water supply amount and the irrigation frequency are obtained.

[0086] The spatial correlation analysis accurately identifies the difference in fertilizer-water demand of different plant regions and different terrains. The fertilizer-water supply is increased for the hot spot region to solve the problem of slow growth of poplar and yellowing of Manila grass caused by fast water loss and large nutrient consumption on the slope. The fertilizer-water supply is reduced for the cold spot region to avoid the problem of root rot of Lagerstroemia indica and overgrowth of lawn caused by water accumulation and excess nutrients in the depression. The dynamically corrected fertilizer-water supply amount and irrigation frequency accurately match the actual demand of each region, meet the high demand of poplar for nitrogen fertilizer and the specific demand of Lagerstroemia indica for phosphorus and potassium fertilizer, and meet the water retention capacity of different terrains to improve the utilization efficiency of fertilizer and water.

[0087] In a preferred embodiment of the present application, based on the corrected fertilizer-water supply amount and the irrigation frequency, plant growth status and soil nutrient data are periodically collected during the fertilizer-water supply process, and the fertilizer-water ratio and supply strategy are adjusted through a data feedback mechanism, which can include: Based on the corrected fertilizer-water supply amount and the irrigation frequency, plant height, chlorophyll content, and soil key nutrient index data are periodically collected to generate growth status monitoring data sets and soil nutrient monitoring data sets. Specifically, based on the corrected fertilizer-water supply amount and the irrigation frequency, the data collection period of each plant region is first determined. The period is set in combination with the plant growth speed and terrain characteristics. The arbor area (poplar) has a long growth period, and data is collected once every 7 days. The shrub area (Lagerstroemia indica) involves flowering growth, and data is collected once every 5 days. The lawn area (Manila grass) has a fast growth speed, and data is collected once every 3 days. At the same time, the transition area between the depression and the slope has a data collection period that is 1 day shorter than that of the flat area of the same plant type to ensure timely capture of the influence of terrain on plant growth.

[0088] The collection indexes include plant height, chlorophyll content and soil key nutrient indexes. The collection methods of each index are as follows. For plant height collection, for poplar, a tape is used to measure the vertical distance from the ground position at the base of the trunk to the top of the tenderest top of the top. Ten poplar trees with uniform growth are randomly selected in each arbor area, and the height data of each tree are recorded after measurement. For Lagerstroemia indica, the height from the ground to the top of the highest flowering branch is measured. Fifteen Lagerstroemia indica trees are randomly selected in each shrub area, and the height data of each tree are recorded. For Manila grass, a ruler is used to measure the average height (from the ground to the top of the grass leaf) in each 1 square meter quadrat randomly selected in the lawn area, and the average height data of each quadrat are recorded.

[0089] For chlorophyll content collection, a portable chlorophyll meter is used for measurement. For poplar, mature leaves on the sunny side of the middle part are selected, three leaves are selected for each tree, and the chlorophyll content of each leaf is measured three times in the middle part of each leaf to obtain the average value. For Lagerstroemia indica, the second to third functional leaves below the flowers are selected, and two leaves are selected for each tree. The chlorophyll content of each leaf is measured three times to obtain the average value. For Manila grass, ten grass leaves are randomly selected in each quadrat, and the chlorophyll content of each leaf is measured once to obtain the average value. Rainy days or periods with water on the leaf surface should be avoided to ensure accurate data.

[0090] For soil key nutrient index collection, the soil key nutrient indexes include nitrogen content, phosphorus content and potassium content. A soil sampler is used to collect soil samples in each area. In the arbor area, three soil samples with a depth of 40 to 60 cm are collected at a distance of 1.5 m from the trunk within the projection range of the crown of each measured poplar tree. In the shrub area, three soil samples with a depth of 20 to 30 cm are collected at a distance of 0.8 m from the trunk around each measured Lagerstroemia indica tree. In the lawn area, three soil samples with a depth of 5 to 10 cm are collected in each quadrat. All soil samples in the same area are mixed uniformly, and the impurities such as stones and roots are removed. Then, 500 grams of mixed soil sample are taken to determine the percentage of nitrogen, phosphorus and potassium content.

[0091] After each collection, all data are arranged in the format of collection time-area type (arbor area / shrub area / lawn area)-topographic feature (low land / slope land / flat land)-plant type-index value. The height data are summarized as the growth state monitoring data set, and the soil nitrogen, phosphorus and potassium content data are summarized as the soil nutrient monitoring data set, so as to ensure that each data set contains complete collection background information.

[0092] Based on the growth state monitoring data set and the soil nutrient monitoring data set, the change trend of the plant growth state and the soil nutrient data is analyzed by calculating the plant growth rate and the nutrient consumption rate, and a quantitative growth state change analysis result is generated. Specifically, based on the growth state monitoring data set and the soil nutrient monitoring data set, the plant growth rate is first calculated, and the calculation object is the plant height data. The calculation method is to select the plant height data of the same batch of measured plants in the same region collected twice in succession, subtract the average plant height collected in the previous time from the average plant height collected in the last time to obtain the plant height growth value, and then divide the plant height growth value by the interval days of the two collections to obtain the average growth rate of the plants in the region. For example, for the poplar in the slope land of the arbor area, the average plant height of 10 trees is 10.2 meters in the first collection, and the average plant height is 10.5 meters in the second collection (with an interval of 7 days). The plant height growth value is 10.5 meters minus 10.2 meters, which is equal to 0.3 meters. The average growth rate is 0.3 meters divided by 7 days, which is approximately equal to 0.043 meters per day. For the Manila grass in the depression land of the lawn area, the average plant height of the quadrat is 6.1 centimeters in the first collection, and the average plant height is 6.4 centimeters in the second collection (with an interval of 3 days). The plant height growth value is 0.3 centimeters, and the average growth rate is 0.3 centimeters divided by 3 days, which is equal to 0.1 centimeters per day.

[0093] Then, the soil nutrient consumption rate is calculated, which is calculated for the soil nitrogen, phosphorus and potassium contents respectively. The method is to select the soil nutrient data collected twice in succession in the same region, subtract the average nutrient content collected in the previous time from the average nutrient content collected in the last time to obtain the nutrient consumption value, and then divide the nutrient consumption value by the interval days of the two collections to obtain the average consumption rate of the nutrient in the region. For example, for the Lagerstroemia indica flower tree area in the flat land of the shrub area, the average soil phosphorus content is 10.2% in the first collection, and the average phosphorus content is 9.5% in the second collection (with an interval of 5 days). The phosphorus consumption value is 10.2% minus 9.5%, which is equal to 0.7%. The average consumption rate of phosphorus is 0.7% divided by 5 days, which is equal to 0.14% per day. For the poplar area in the depression land of the arbor area, the average soil nitrogen content is 18.5% in the first collection, and the average nitrogen content is 17.8% in the second collection (with an interval of 7 days). The nitrogen consumption value is 0.7%, and the average consumption rate of nitrogen is 0.7% divided by 7 days, which is equal to 0.1% per day.

[0094] Then the growth state and the change trend of soil nutrient data are analyzed, and the calculated growth rate and nutrient consumption rate are compared with the preset ideal value of each plant type. The ideal growth rate of poplar is 0.05 meters per day, and the ideal nitrogen consumption rate is 0.12% per day; the ideal growth rate of Lagerstroemia indica is 0.02 meters per day (flowering period), and the ideal phosphorus consumption rate is 0.15% per day; the ideal growth rate of Manila grass is 0.12 centimeters per day, and the ideal potassium consumption rate is 0.1% per day; if the actual growth rate is lower than the ideal value, combined with the nutrient consumption rate, if the nutrient consumption rate is higher than the ideal value, it means that the current nutrient supply is insufficient, resulting in slow growth; if the nutrient consumption rate is lower than the ideal value, it means that the plant absorption capacity is weak, and there may be soil environment problems (such as root hypoxia caused by waterlogging in low-lying land); if the actual growth rate is higher than the ideal value, it is necessary to judge whether the nutrient consumption rate is too high to avoid excessive consumption leading to subsequent insufficient supply.

[0095] Finally, the above analysis results are quantified to form quantitative growth state change analysis results, including the difference between the actual growth rate and the ideal value of each region plant, the difference between the actual nutrient consumption rate and the ideal value, and the reason for the difference in growth state, such as the poplar in the arbor area of the slope, the growth rate is 0.043 meters per day, which is 0.007 meters per day lower than the ideal value, and the nitrogen consumption rate is 0.13% per day, which is 0.01% per day higher than the ideal value, which is judged as slightly insufficient nitrogen supply; the Manila grass in the low-lying land of the lawn area, the growth rate is 0.08 centimeters per day, which is 0.04 centimeters per day lower than the ideal value, and the potassium consumption rate is 0.08% per day, which is 0.02% per day lower than the ideal value, which is judged as weak root absorption related to the over-wet soil in the low-lying land.

[0096] Based on the quantitative growth state change analysis result, the nutrient proportion in the differential fertilizer and water formula is adjusted to generate an updated fertilizer and water formula, which specifically includes: based on the quantitative growth state change analysis result, the nitrogen, phosphorus, potassium and organic matter proportions in the differential fertilizer and water formula are adjusted according to the nutrient demand difference of different plant regions. In combination with the plant type, growth problem cause and topographic feature, for the arbor region (poplar), if the analysis result shows that the growth rate is low and the nitrogen consumption rate is high, such as the poplar on the slope, the nitrogen consumption rate of 0.13% per day is higher than the ideal value of 0.01% per day, which indicates that the nitrogen supply is insufficient, and the nitrogen content proportion in the formula needs to be increased. The original arbor region formula nitrogen content is 18%, the adjustment range is the actual nitrogen consumption rate minus the ideal nitrogen consumption rate divided by the ideal nitrogen consumption rate, and the adjustment proportion is obtained, and then the original nitrogen content is multiplied by (1 plus the adjustment proportion), for example, (0.13%-0.12%) ÷ 0.12% ≈ 8.33%, and the adjusted nitrogen content is 18% × (1+8.33%) ≈ 19.5%; if the analysis result shows that the growth rate is normal but the phosphorus consumption rate is low, such as the poplar in the depression, the phosphorus consumption rate of 0.05% per day is lower than the ideal value of 0.03% per day, which indicates that the phosphorus absorption is low, and the phosphorus content in the original formula of 8% can be maintained without increasing the phosphorus content, and the soil humidity is improved by subsequent irrigation adjustment.

[0097] For the shrub region (lagerstroemia indica), if the analysis result shows that the flowering growth rate is low and the phosphorus consumption rate is high, such as the lagerstroemia indica on the flat ground, the phosphorus consumption rate of 0.16% per day is higher than the ideal value of 0.01% per day, and the phosphorus content proportion in the formula needs to be increased. The original shrub region formula phosphorus content is 10%, the adjustment range is calculated according to (actual phosphorus consumption rate-ideal phosphorus consumption rate) ÷ ideal phosphorus consumption rate, (0.16%-0.15%) ÷ 0.15% ≈ 6.67%, and the adjusted phosphorus content is 10% × (1+6.67%) ≈ 10.7%; if the analysis result shows that the potassium consumption rate is low, such as the lagerstroemia indica in the depression, the potassium consumption rate of 0.07% per day is lower than the ideal value of 0.03% per day, which indicates that the potassium absorption is insufficient, and the potassium content (original 15%) is temporarily not increased due to the influence of water accumulation on the root function of the depression, and the absorption environment is preferentially adjusted by drainage.

[0098] For the lawn area (Manila grass), if the analysis result shows that the growth rate is low and the potassium consumption rate is high, such as the slope Manila grass, the potassium consumption rate is 0.12% per day, which is higher than the ideal value of 0.02% per day, the proportion of potassium in the formula needs to be increased. The original formula for the lawn area contains 10% potassium, and the adjustment range is (0.12%-0.1%) / 0.1%=20%, so the adjusted potassium content is 10% x (1+20%) = 12%.

[0099] During the adjustment process, the terrain characteristics also need to be considered. The nutrients on the slope are lost quickly, so the nutrient proportion after adjustment is 5% higher than that on the flat ground of the same plant type. For example, the nitrogen content of the slope poplar is 19.5%, and the nitrogen content of the flat ground poplar is 19%. The nutrients in the low-lying area tend to accumulate, so the nutrient proportion after adjustment is 3% lower than that on the flat ground of the same plant type. For example, the phosphorus content of the low-lying Lagerstroemia indica is 10.4%, and the flat ground is 10.7%. The adjusted proportion of each component is arranged to generate an updated fertilizer and water formula, and the corresponding plant area and terrain characteristics of each formula are determined, such as the special formula for the slope of the arbor area, which contains 19.5% nitrogen, 8% phosphorus, 12% potassium, and 5% organic matter. The special formula for the low-lying area of the lawn area contains 20% nitrogen, 6% phosphorus, 11.7% potassium, and 7.2% organic matter.

[0100] Based on the updated fertilizer and water formula, the irrigation frequency is adjusted accordingly to form the final adjusted fertilizer and water supply strategy. Specifically, based on the updated fertilizer and water formula, the nutrient concentration difference between the new formula and the original formula is analyzed. If the total nutrient concentration of the new formula is higher than that of the original formula, it means that the nutrient content in unit volume of irrigation water has increased, and the irrigation frequency needs to be adjusted to avoid excessive nutrients from causing root burning of plants. If the total nutrient concentration is lower than that of the original formula, the irrigation frequency needs to be appropriately shortened to ensure that the nutrient supply amount per unit time meets the demand.

[0101] The specific adjustment method is as follows. The nutrient concentration change rate is calculated by (updated formula total nutrient concentration - original formula total nutrient concentration) ÷ original formula total nutrient concentration. For example, the total nutrient concentration of the original formula for the slope of the arbor area is 18% + 8% + 12% + 5% = 43%, and the total nutrient concentration of the updated formula is 19.5% + 8% + 12% + 5% = 44.5%. The concentration change rate is (44.5%-43%) / 43%≈3.49%. The total nutrient concentration of the original formula for the flat ground of the shrub area is 12% + 10% + 15% + 8% = 45%, and the total nutrient concentration of the updated formula is 12% + 10.7% + 15% + 8% = 45.7%. The concentration change rate is (45.7%-45%) / 45%≈1.56%.

[0102] determining the irrigation frequency adjustment direction, if the concentration change rate is positive (the nutrient concentration increases), the irrigation frequency needs to be extended, that is, the irrigation interval days are increased, and the adjustment amplitude is 50% of the concentration change rate, that is, the new irrigation interval is equal to the original corrected irrigation interval x (1 + concentration change rate x 50%); if the concentration change rate is negative (the nutrient concentration decreases), the irrigation frequency needs to be shortened, that is, the irrigation interval days are reduced, and the adjustment amplitude is 50% of the absolute value of the concentration change rate, that is, the new irrigation interval is equal to the original corrected irrigation interval x (1 - concentration change rate absolute value x 50%), at the same time, combined with the growth problem reason in the quantitative growth state change analysis result, further adjust the irrigation frequency, if the analysis result shows that the plant growth is affected by the soil over-wetting, such as the weak root absorption of Manila grass in the low-lying area, even if the new formula nutrient concentration decreases, it also needs to be extended by 10% than the new irrigation interval calculated, to avoid the waterlogging in the low-lying area; if the analysis result shows that the plant growth is affected by the soil drought, such as the slow growth of poplar on the slope, even if the new formula nutrient concentration increases, it also needs to be shortened by 10% than the new irrigation interval calculated, to ensure sufficient water supply to promote nutrient absorption.

[0103] For example, the original corrected irrigation interval of the arbor area on the slope is 2.25 days, and the concentration change rate of the updated formula is 3.49% (positive), and the calculated new irrigation interval is 2.25 days x (1 + 3.49% x 50%) = 2.25 days x 1.01745 = 2.29 days; and because there is a slight drought problem of poplar on the slope, it is further shortened by 10%, and the final irrigation interval is 2.29 days x 0.9 = 2.06 days; the original corrected irrigation interval of the low-lying area in the lawn area is 1.21 days, and the concentration change rate of the updated formula is 2% (positive), and the calculated new irrigation interval is 1.21 days x (1 + 2% x 50%) = 1.21 days x 1.01 = 1.22 days; and because there is an over-wetting problem in the low-lying area, it is further extended by 10%, and the final irrigation interval is 1.22 days x 1.1 = 1.34 days; finally, the updated fertilizer water formula is combined with the adjusted irrigation frequency to determine the specific execution parameters of each area, such as the fertilizer water formula for the arbor area on the slope is nitrogen 19.5%, phosphorus 8%, potassium 12%, and organic matter 5%, the irrigation amount is 11.6 liters per square meter, and the irrigation frequency is 2.06 days once; the fertilizer water formula for the low-lying area in the lawn area is nitrogen 20%, phosphorus 6%, potassium 11.7%, and organic matter 7.2%, the irrigation amount is 5.4 liters per square meter, and the irrigation frequency is 1.34 days once, forming the final adjusted fertilizer water supply strategy, and recording the adjustment basis such as the concentration change rate and the growth problem reason, to ensure that the strategy is traceable.

[0104] By regularly monitoring plant growth and soil nutrient data, the growth needs of different plants in different terrains can be accurately captured, and the growth rate is low, and the nutrient consumption is abnormal. The problem of adjusting the fertilizer and water formula and the irrigation frequency can solve the problem that the growth of plants on the slope is slow due to the rapid loss of nutrients, and the root absorption of plants in the depression is weak due to too much water. The updated fertilizer and water formula can better meet the actual needs of plants, such as supplementing nitrogen content for poplar, optimizing phosphorus proportion for purple willow flower tree, and adjusting potassium and organic matter content for Manila grass, to ensure that various plants obtain suitable nutrient supply; The adjusted irrigation frequency combines the nutrient concentration and the terrain characteristics, which can avoid excessive or insufficient nutrients, prevent water accumulation in the depression and drought on the slope, and create a good environment for plant growth.

[0105] Embodiments of the present application also provide a computing device, comprising: a processor, a memory storing a computer program, when the computer program is run by the processor, the method as described above is executed. All implementation manners in the above method embodiments are applicable to this embodiment, and the same technical effects can also be achieved.

[0106] Embodiments of the present application also provide a computer-readable storage medium, storing instructions, when the instructions are run on a computer, the computer executes the method as described above. All implementation manners in the above method embodiments are applicable to this embodiment, and the same technical effects can also be achieved.

[0107] The above is the preferred embodiment of the present application, it should be pointed out that, for those skilled in the technical field, without departing from the principles of the present application, can make a number of improvements and refinements, these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A garden maintenance fertilizer water supply system, characterized by, The method comprises the following steps: A region division module is used to divide the maintenance area into arbor area, shrub area and lawn area according to the plant type distribution of the park green land, and to obtain soil property data and terrain elevation data of each area; A formula configuration module is used to configure differentiated fertilizer and water formula for different plant type areas based on the soil property data and plant type zoning data; A scheme formulation module is used to formulate a fertilizer and water supply scheme suitable for the terrain features based on the fertilizer and water formula and in combination with the terrain elevation data, including setting up drainage facilities in low-lying areas and adopting slow-release irrigation mode in slope areas; A monitoring construction module is used to arrange multiple-source dynamic sensing nodes in the maintenance area according to the fertilizer and water supply scheme, to construct a monitoring network covering different microenvironments, to monitor the soil moisture content in real time through the deployed soil humidity sensors, and to dynamically adjust the fertilizer and water supply amount and irrigation frequency in combination with the meteorological data to obtain real-time monitoring data; An analysis and correction module is used to perform spatial correlation analysis on the monitoring area based on the real-time monitoring data, to generate comprehensive adjustment parameters, and to dynamically correct the fertilizer and water supply amount and irrigation frequency by using the adjustment parameters to obtain the corrected fertilizer and water supply amount and irrigation frequency; A feedback adjustment module is used to regularly collect plant growth state and soil nutrient data during the fertilizer and water supply process based on the corrected fertilizer and water supply amount and irrigation frequency, and to adjust the fertilizer and water ratio and supply strategy through a data feedback mechanism.

2. The garden maintenance fertilizer water supply system according to claim 1, wherein Based on the soil property data and plant type zoning data, differentiated fertilizer and water formula is configured for different plant type areas, including: Extracting specific boundary and area information of arbor area, shrub area and lawn area in the plant type zoning data to form preliminary zoning data; Performing spatial overlay analysis on the soil property data and the preliminary zoning data, calculating the average value of soil nutrient content in each zone, and generating comprehensive zoning data with soil nutrient information; According to the plant type information in the comprehensive zoning data, labeling the demand for promoting the growth of the crown layer for the arbor area, the demand for maintaining the overall growth for the shrub area, and the demand for promoting the development of the root system for the lawn area; According to the labeled fertilizer demand characteristics, matching the fertilizer and water formula for promoting the growth of the crown layer for the arbor area, the fertilizer and water formula for maintaining the overall growth for the shrub area, and the fertilizer and water formula for promoting the development of the root system for the lawn area to obtain the fertilizer and water formula matching result of each area.

3. The garden maintenance fertilizer water supply system according to claim 2, wherein Based on the fertilizer and water formula and in combination with the terrain elevation data, a fertilizer and water supply scheme suitable for the terrain features is formulated, including setting up drainage facilities in low-lying areas and adopting slow-release irrigation mode in slope areas, including: Based on the fertilizer and water formula and the terrain elevation data, identifying low-lying areas to generate a preliminary supply scheme including drainage facilities; According to the preliminary supply scheme, identifying slope areas and expanding the preliminary supply scheme by using slow-release irrigation mode in combination with the fertilizer and water formula to generate an intermediate supply scheme including slope irrigation measures; Based on the intermediate supply scheme, extracting slope change information in the terrain elevation data to calibrate irrigation pressure and time parameters to generate a terrain-adapted supply scheme; Integrate the drainage facilities for low-lying areas and the slow-release irrigation measures for slope areas in the topography-adapted supply scheme to form a final fertilizer and water supply implementation scheme that is adapted to the topographic features.

4. The garden maintenance fertilizer water supply system according to claim 3, wherein According to the fertilizer and water supply scheme, multiple-source dynamic sensing nodes are arranged in the maintenance area to build a monitoring network covering different microenvironments, including: According to the fertilizer and water supply scheme, the arbor area, shrub area, and lawn area are identified, and soil moisture sensors, temperature sensors, and light sensors are respectively deployed in the corresponding areas to generate an initial node layout scheme; Based on the initial node layout scheme, the sensor nodes deployed in each subarea are connected to the central controller through a wireless network to establish a preliminary monitoring network for real-time data collection; Based on the preliminary monitoring network, the distribution density and installation location of the sensor nodes are adjusted in combination with the microenvironment difference characteristics of each subarea to generate an adjusted monitoring network configuration; The sensor node layout of each subarea in the monitoring network configuration is integrated to form a complete monitoring network covering different microenvironments.

5. The garden maintenance fertilizer water supply system according to claim 4, wherein Real-time monitoring of soil water content is performed through the deployed soil moisture sensors, and the fertilizer and water supply amount and irrigation frequency are dynamically adjusted in combination with meteorological data to obtain real-time monitoring data, including: Based on the complete monitoring network, real-time soil moisture data are obtained, and a deviation value between the current soil water content and the preset ideal water content is calculated; Based on the deviation value, in combination with the precipitation, evaporation, and temperature information in the real-time meteorological data, the soil water change trend in the future period is predicted to obtain a soil water change trend prediction result; Based on the soil water change trend prediction result, an adjustment scheme of the irrigation amount and irrigation time interval is automatically generated; The adjustment scheme is integrated with the fertilizer formula to generate monitoring data of real-time fertilizer and water supply suitable for the current environmental conditions.

6. The garden maintenance fertilizer water supply system according to claim 5, wherein Based on the deviation value, in combination with the precipitation, evaporation, and temperature information in the real-time meteorological data, the soil water change trend in the future period is predicted to obtain a soil water change trend prediction result, including: Based on the deviation value, soil water trend prediction is performed, and real-time monitoring of precipitation, evaporation, and temperature information is used as the prediction basis; The deviation value and meteorological data are subjected to a predefined water change calculation rule to obtain a continuous change value of the soil water content in the future period; According to the continuous change value, the overall change trend of the soil water content in the future period is determined, and the change trend is analyzed to determine the predicted decline rate of the soil water content and the predicted time to reach the critical point of water demand.

7. The horticultural maintenance fertilizer water supply system of claim 6, wherein, Based on the real-time monitoring data, spatial correlation analysis is performed on the monitoring area to generate comprehensive adjustment parameters, and the adjustment parameters are used to dynamically correct the fertilizer and water supply amount and irrigation frequency to obtain the corrected fertilizer and water supply amount and irrigation frequency, including: Based on the real-time monitoring data, spatial interpolation analysis is performed on the soil water and nutrient data to form soil water spatial distribution data and soil nutrient spatial distribution data; Based on the soil water spatial distribution data and soil nutrient spatial distribution data, hot and cold point areas of fertilizer demand are identified through spatial correlation analysis to generate regional demand spatial feature data; Based on the regional demand space feature data, by calculating the demand difference proportion of hot spot area and cold spot area, a comprehensive adjustment parameter set including irrigation amount correction coefficient and irrigation frequency adjustment parameter is automatically generated; Apply the comprehensive adjustment parameter set to the fertilizer and water supply scheme, dynamically correct the irrigation amount and irrigation frequency to obtain the corrected fertilizer and water supply amount and irrigation frequency.

8. The horticultural maintenance fertilizer water supply system of claim 7, wherein, Based on the corrected fertilizer and water supply amount and irrigation frequency, plant growth state and soil nutrient data are collected regularly during the fertilizer and water supply process, and the data feedback mechanism is used to adjust the fertilizer and water supply strategy, including: Based on the corrected fertilizer and water supply amount and irrigation frequency, plant height, chlorophyll content and soil key nutrient index data are collected regularly to generate growth state monitoring data set and soil nutrient monitoring data set; Based on the growth state monitoring data set and soil nutrient monitoring data set, by calculating the plant growth rate and nutrient consumption rate, the change trend of plant growth state and soil nutrient data is analyzed to generate quantitative growth state change analysis result; Based on the quantitative growth state change analysis result, the nutrient proportion in the differential fertilizer formula is adjusted to generate the updated fertilizer formula; Based on the updated fertilizer formula, the irrigation frequency is adjusted accordingly to form the final adjusted fertilizer supply strategy.

9. A computing device, comprising: It includes: One or more processors; Storage device for storing one or more programs, when the one or more programs are executed by the one or more processors, so that the one or more processors implement the system as claimed in any one of claims 1 to 8.

10. A computer-readable storage medium, characterized in that, The computer readable storage medium stores a program which is executed by the processor to implement the system as claimed in any one of claims 1 to 8.

Images