A municipal greening plant intelligent irrigation and maintenance method

Abstract

The present application relates to the technical field of data processing, in particular to a kind of municipal afforestation plant intelligent irrigation and maintenance method.The method first obtains the plant information of municipal afforestation area, meteorological data;Then, according to the actual water absorption of plant in last irrigation cycle, the predicted water absorption range of plant in the best soil moisture content range of afforestation area, the sufficient degree of water absorption of plant in this irrigation cycle is obtained, and the soil predicted moisture content of each time period in this irrigation cycle is obtained in combination with the soil moisture content increment variable of this irrigation cycle;According to the soil predicted moisture content, the sufficient degree of water absorption of plant in this irrigation cycle is obtained according to the predicted water absorption range;Finally, according to the sufficient degree of water absorption of plant in this irrigation cycle, the initial irrigation amount of this irrigation cycle is adjusted, and the afforestation area is irrigated.The present application can realize the accurate control of the irrigation amount of afforestation area.

Description

Technical Field

[0001] This invention relates to the field of data processing technology, specifically to an intelligent irrigation and maintenance method for municipal greening plants. Background Technology

[0002] Urban greening, as a public infrastructure of a city, is an important component of urban municipal utilities and urban environmental construction. It not only beautifies the urban environment but also provides vital ecological services such as air purification, noise control, and biodiversity conservation. With continuous economic growth and urban expansion, the role of urban greening has become increasingly important. To address the environmental challenges brought about by urbanization, particularly reducing the urban heat island effect, numerous small green belts, such as street greenbelts, community gardens, and parks, have emerged in city centers and commercial areas. These green belts not only provide recreational spaces but also effectively reduce surface temperature and improve air quality. Furthermore, these small green belts regulate urban climate, reduce rainwater runoff, and provide residents with opportunities to connect with nature. With the promotion of urban greening projects, the urban environment has become more livable, and residents' quality of life has significantly improved.

[0003] Currently, irrigation of urban greenbelts relies primarily on manual operation, typically controlled by workers driving vehicles. This traditional method is not only inefficient but also prone to water waste. Manually controlled irrigation struggles to precisely regulate water volume, often resulting in over-irrigation in some areas and insufficient water in others. This uneven irrigation fails to effectively meet the actual needs of the greenbelts, impacting plant health. Furthermore, the lack of real-time monitoring and data support limits information on whether greenbelts require irrigation, leading to decisions often based on experience or fixed schedules rather than actual soil moisture or plant needs. This results in imprecise irrigation amounts for green plants using current technology, failing to adapt to specific conditions and further reducing maintenance efficiency. Additionally, a uniform irrigation model is ill-suited to the diverse needs of different seasons, climates, and plant species, leading to resource waste and negatively impacting the overall greening effect. Summary of the Invention

[0004] To address the technical problem of insufficient precision in irrigation of municipal greening plants in existing technologies, the present invention aims to provide an intelligent irrigation and maintenance method for municipal greening plants. The specific technical solution adopted is as follows:

[0005] This invention provides a method for intelligent irrigation and maintenance of municipal greening plants, the method comprising:

[0006] Step S1: Obtain plant information and meteorological data for municipal greening areas;

[0007] Step S2: Based on the actual water absorption of the plants in the previous irrigation cycle and the predicted water absorption range of the plants under the optimal soil moisture content range in the greening area, obtain the sufficiency of water absorption by the plants in this irrigation cycle.

[0008] Step S3: Based on the sufficiency of plant water absorption in the previous irrigation cycle and the change in soil moisture content in this irrigation cycle, obtain the predicted soil moisture content for each time period of this irrigation cycle.

[0009] Step S4: Based on the predicted soil moisture content and the predicted water absorption range, determine the sufficiency of water absorption by the plants during this irrigation cycle;

[0010] Step S5: Based on the sufficiency of water absorption by the plants during this irrigation cycle, adjust the initial irrigation amount for this irrigation cycle and irrigate the green area.

[0011] Further, step S1 specifically includes:

[0012] Obtain plant information for municipal green areas, including plant species and the rate at which plants absorb water at different times and soil moisture contents;

[0013] Obtain meteorological data for municipal green areas, including historical and future data on temperature, humidity, wind speed, radiation, and precipitation for each green area.

[0014] Further, step S2 specifically includes:

[0015] Based on the actual water absorption of plants in each green area at each time period in the previous irrigation cycle, and the predicted water absorption range of plants in each green area at each time period under the optimal soil moisture content range, the water absorption efficiency of plants in each green area at each time period in the previous irrigation cycle is obtained.

[0016] Increase the proportion of water absorption efficiency of plants in each green area during the later time period of the previous irrigation cycle compared to all time periods of the previous irrigation cycle, and obtain the sufficiency of water absorption by plants in each green area during the previous irrigation cycle.

[0017] Furthermore, the actual water absorption of plants in each green area for each time period during the previous irrigation cycle is as follows:

[0018] Based on the initial soil moisture content, precipitation, evaporation, and plant water absorption rate of each green area in the first time period of the previous irrigation cycle, obtain the soil moisture content of each green area in the second time period of the previous irrigation cycle. Then, iterate through the other time periods of the previous irrigation cycle to obtain the soil moisture content of each green area in all time periods of the previous irrigation cycle.

[0019] Based on the plant water absorption rate under the soil moisture content of each green area at all time periods in the previous irrigation cycle, the actual water absorption of the plants in each green area at each time period in the previous irrigation cycle is obtained.

[0020] Furthermore, the predicted water absorption range of the plant under the optimal soil moisture content range for each time period in each greening area is specifically as follows:

[0021] The soil water content at which the plant absorbs water at its maximum rate under different soil moisture conditions at different time periods is recorded as the optimal water content required by the plant for the environment. An upper limit threshold for the optimal water content is preset. The range formed by the optimal water content and the upper limit threshold is recorded as the optimal soil water content range for the plant at different time periods.

[0022] The minimum value among the right boundaries of the optimal water content range of all plants in a green area for a certain time period is recorded as the right boundary of the optimal water content range of the green area for that time period. The maximum value among the left boundaries of the optimal water content range of all plants in a green area for that time period is recorded as the left boundary of the optimal water content range of the green area for that time period. This yields the predicted water absorption range under the optimal soil moisture content range of the green area for that time period.

[0023] By traversing each green area and each time period, the predicted water absorption range of plants under the optimal soil moisture content range in each green area and each time period is obtained.

[0024] Furthermore, the soil moisture content increase / decrease variables in step S3 specifically include: the predicted rainfall for each time period of this irrigation cycle, the water absorption rate of plants in each green area under the soil moisture content in each time period of this irrigation cycle, and the potential evaporation of each green area in each future time period of this irrigation cycle.

[0025] Furthermore, step S3 specifically includes:

[0026] Based on the soil moisture content of each green area in the last time period of the previous irrigation cycle, the irrigation amount of the previous irrigation cycle, the sufficiency of water absorption by plants in the previous irrigation cycle, the predicted precipitation in the first time period of the current irrigation cycle, the water absorption rate of plants under the soil moisture content in the first time period of the current irrigation cycle, the duration of the first time period of the current irrigation cycle, and the potential evaporation in the first time period of the current irrigation cycle, the predicted soil moisture content of each green area in the second time period of the current irrigation cycle is obtained.

[0027] Based on the predicted soil moisture content, precipitation, evaporation, and plant water absorption rate at the corresponding soil moisture content for each green area in the subsequent time period of this irrigation cycle, the soil moisture content for each green area in the subsequent time period is obtained.

[0028] Furthermore, step S4 specifically includes:

[0029] Based on the soil moisture content of each green area in each time period of this irrigation cycle and the predicted water absorption range of plants in each green area in each time period under the optimal soil moisture content range, the water absorption efficiency of plants in each green area in each time period of this irrigation cycle is obtained.

[0030] Increase the proportion of water absorption efficiency of plants in each green area during the later time period of the previous irrigation cycle to the total water absorption efficiency during the current irrigation cycle, and obtain the water absorption sufficiency of plants in each green area during the current irrigation cycle.

[0031] Furthermore, step S5 specifically includes:

[0032] Based on the predicted sufficiency of water absorption by plants in this area during this irrigation cycle and the irrigation amount of the previous irrigation cycle, the initial irrigation correction amount for this irrigation cycle is obtained.

[0033] Irrigate each green area according to the initial irrigation correction amount for this irrigation cycle.

[0034] Furthermore, after step S5, the method further includes:

[0035] Based on the real meteorological data for each time period of this irrigation cycle, step S4 calculates the actual sufficiency of water absorption by plants in each green area during each time period of this irrigation cycle. If the actual sufficiency of water absorption by plants in a green area during a time period is less than the preset sufficiency threshold, and there is no effective rainfall in the green area in the meteorological data for the next few days, the relevant parties are prompted to carry out emergency irrigation for the green area.

[0036] The present invention has the following beneficial effects:

[0037] First, by obtaining the water absorption rates of different plants under varying soil moisture contents, the optimal moisture content range for various plants within each greening area was determined. Based on the analysis of the actual water absorption of plants in the previous irrigation cycle, the sufficiency of water absorption during that cycle was determined. Combining real-time meteorological data and historical data to predict soil evaporation and precipitation for the current irrigation cycle, and considering the initial soil moisture content, predicted water absorption of plants, irrigation volume from the previous cycle, and the sufficiency of plant water absorption, the initial irrigation volume for the current irrigation cycle was determined. This ensures that adequate water is provided during this irrigation process to promote healthy plant growth and avoid the negative impacts of excessive or insufficient water.

[0038] Second, by calculating the trend of soil moisture content changes during the current irrigation cycle and predicting the potential evaporation and water absorption of plants under future weather conditions in real time, this invention can flexibly adjust the irrigation cycle and irrigation volume in real time. When the actual water absorption of plants in a green area during a certain period of the current irrigation cycle is less than the preset sufficiency threshold, and there is no effective rainfall in the green area in the weather data for the next few days, the relevant parties are prompted to carry out emergency irrigation for the green area. Attached Figure Description

[0039] To more clearly illustrate the technical solutions and advantages in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 This is a flowchart illustrating an intelligent irrigation and maintenance method for municipal greening plants, provided as an embodiment of the present invention. Detailed Implementation

[0041] To further illustrate the technical means and effects adopted by the present invention to achieve its intended purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, details the specific implementation, structure, features, and effects of an intelligent irrigation and maintenance method for municipal greening plants proposed according to the present invention. In the following description, different "one embodiment" or "another embodiment" do not necessarily refer to the same embodiment. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0042] The scenario targeted by this invention is as follows: When precisely controlling the irrigation of green belts, different plants absorb water at different rates under different soil moisture contents, and the evaporation rate of water in the soil also varies due to weather conditions such as wind speed. Therefore, by ensuring that the plants are not over-irrigated, the irrigation amount for the current irrigation cycle is obtained by considering the sufficiency of water absorption by the plants in the previous irrigation cycle, the irrigation amount, the predicted soil moisture content for the current irrigation cycle, and the predicted water absorption range of the plants within the optimal soil moisture content range of the green area.

[0043] The following description, in conjunction with the accompanying drawings, details a specific scheme for an intelligent irrigation and maintenance method for municipal greening plants provided by this invention.

[0044] Please see Figure 1 The diagram illustrates a flowchart of an intelligent irrigation and maintenance method for municipal greening plants according to an embodiment of the present invention. The method includes the following steps:

[0045] Step S1: Obtain plant information and meteorological data for municipal greening areas.

[0046] Specifically, this includes acquiring plant information for municipal green areas, including plant species and the rate at which plants absorb water at different times and soil moisture contents; and acquiring meteorological data for municipal green areas, including historical and future data on temperature, humidity, wind speed, radiation, and precipitation for each green area. Then, based on the plant information and meteorological data for municipal green areas, a greening database is constructed.

[0047] It should be noted that the rate at which plants absorb water at different times and soil moisture contents can be obtained via the internet. Time periods can be divided into days or seasons. Meteorological data for municipal greening areas includes predicted meteorological data for each irrigation cycle and actual collected meteorological data.

[0048] Step S2: Based on the actual water absorption of the plants in the previous irrigation cycle and the predicted water absorption range of the plants under the optimal soil moisture content range in the greening area, obtain the sufficiency of water absorption by the plants in this irrigation cycle.

[0049] The actual water absorption of plants in the previous irrigation cycle refers to the actual water absorption of plants in each green area for each time period in the previous irrigation cycle. Specifically, it is as follows: Based on the initial soil moisture content, precipitation, evaporation, and plant water absorption rate at the initial soil moisture content of each green area in the first time period of the previous irrigation cycle, the soil moisture content of each green area in the second time period of the previous irrigation cycle is obtained. Then, by iterating through the other time periods of the previous irrigation cycle, the soil moisture content of each green area in all time periods of the previous irrigation cycle is obtained. Based on the plant water absorption rate at the soil moisture content of each green area in all time periods of the previous irrigation cycle, the actual water absorption of plants in each green area for each time period of the previous irrigation cycle is obtained.

[0050] Since the environment in which plants live is not static, they generally cannot always reach the ideal water absorption rate. Therefore, it is necessary to consider the different water contents of each greening area due to various factors influencing the environment. These factors include the different daily evaporation rates of the soil in each greening area due to differences in temperature, humidity, wind speed, radiation, etc. at different times of the day. It also includes the initial water content of each greening area and the daily water consumption of the plants. Then, by using the plant water absorption rate under the soil water content of each greening area at all times of the previous irrigation cycle and the duration of all times, the actual water absorption of the plants in each greening area at each time time of the previous irrigation cycle can be obtained.

[0051] More specifically, firstly, the previous irrigation cycle is divided into several time periods on a daily basis. Then, relevant meteorological data such as temperature, humidity, wind speed, and radiation for each time period within the previous irrigation cycle are obtained from the meteorological bureau. The evaporation of each green area for each time period is calculated using the Penman-Monteith formula (a known technique). Furthermore, the initial moisture content of the previous irrigation cycle, the evaporation of each green area in the first time period of the previous cycle, the water absorption rate of each green area in the first time period under the initial moisture content of the previous irrigation cycle, the precipitation of each green area in the first time period of the previous cycle are considered to obtain the soil moisture content of each green area in the second time period of the previous irrigation cycle.

[0052] In this embodiment, the mathematical formula for calculating the soil moisture content of each green area in the second time period of the previous irrigation cycle is as follows:

[0053]

[0054] In the formula, L0 represents the initial water content of the first time period of the previous irrigation cycle, that is, the water content at the time of irrigation in the previous irrigation cycle; L JThis represents the rainfall amount in the first time period of the previous irrigation cycle; T represents the duration of the first time period of the previous irrigation cycle. This indicates the rate at which the plant absorbs water at the initial moisture content during the first time period of the previous irrigation cycle; L z L represents the evaporation rate of each municipal green space during the first time period of the previous irrigation cycle. i This indicates the soil moisture content of each green area during the second time period of the previous irrigation cycle.

[0055] In the mathematical formula for calculating the soil moisture content of each green area in the second time period of the previous irrigation cycle, as constructed above, the initial moisture content L0 of the first time period of the previous irrigation cycle and the precipitation L of the first time period of the previous irrigation cycle are used. J These serve as the baseline and increment of soil moisture content for each greening area during the first time period of the previous irrigation cycle, respectively. This represents the actual water absorption of each green area during the first time period of the previous irrigation cycle, compared to the evaporation L of each municipal green area during the first time period of the previous irrigation cycle. z All of these represent the reduction in soil moisture content in each greening area during the first period of the previous irrigation cycle.

[0056] Based on the above method, the soil moisture content of each green area in the previous irrigation cycle is obtained by iterating through the second to the last time period from the second to the last time period. Further, based on the plant water absorption rate under the soil moisture content of each green area in the previous irrigation cycle, and combined with the duration of each time period in the previous irrigation cycle, the actual water absorption amount of the plants in each green area in each time period of the previous irrigation cycle is obtained by multiplying the plant water absorption rate under the soil moisture content of each time period by the duration of the corresponding time period and summing the results.

[0057] Furthermore, it should be noted in step S2 that the predicted water absorption range of the plant under the optimal soil moisture content range for each time period in each greening area is specifically as follows: The soil water content corresponding to the maximum water absorption rate of the plant under different soil moisture contents at different time periods is recorded as the optimal water content required by the plant for the environment. A preset upper limit threshold for optimal water content is set, and the interval formed by this optimal water content and the upper limit threshold is recorded as the optimal soil moisture content range for the plant in different time periods. The minimum value among the right boundaries of the optimal water content ranges of all plants in a greening area under a certain time period is recorded as the right boundary of the optimal water content range for that time period in that greening area, and the maximum value among the left boundaries of the optimal water content ranges of all plants in a greening area under that time period is recorded as the left boundary of the optimal water content range for that time period in that greening area, thus obtaining the predicted water absorption range under the optimal soil moisture content range for that time period in that greening area. This process is repeated for each greening area and each time period to obtain the optimal soil moisture content range for the plant in each greening area and each time period.

[0058] The predicted water absorption range under the enclosure.

[0059] More specifically, the plants in each green area are first identified and marked, and then compared with information in the greening database to update the data. Furthermore, different plants at different times of the year are obtained from greening plant databases or the internet.

[0060] The rate of water absorption under different moisture contents was determined by examining the maximum water absorption rate of plants at different time periods and soil moisture contents.

[0061] The corresponding soil water content at that time is recorded as the optimum water content required by the plant in the previous irrigation cycle. The preset optimum water content...

[0062] The upper limit threshold for water content is 180% of the optimum water content corresponding to different time periods of the plant. This ranges from 100% optimum water content to 180% optimum water content.

[0063] The water content range is denoted as the optimal soil water content range for the plant at different time periods. Then, since each green area may have the maximum value within the left boundary of the water content range, this is denoted as the left boundary of the most recent water content range for that area; thus, the optimal water content range for that area is obtained. Finally, by traversing each green area and each time period, the optimal water content range for each plant in each green area is obtained.

[0064] Predicted water absorption range under the optimal soil moisture content range for the time period.

[0065] Further, step S2 specifically includes: obtaining the actual water absorption of plants in each green area for each time period during the previous irrigation cycle, and the predicted water absorption range of plants in each green area for each time period under the optimal soil moisture content range.

[0066] Take the water absorption efficiency of plants in each green area at each time period during the previous irrigation cycle; improve the water absorption efficiency of each green area during the previous irrigation cycle.

[0067] The proportion of plant water absorption efficiency in the later time period of the irrigation cycle compared to all time periods in the previous irrigation cycle, to obtain the previous...

[0068] The adequacy of water absorption by plants in each green area during the irrigation cycle.

[0069] More specifically, when obtaining the water absorption efficiency of plants in each green area for each time period during the previous irrigation cycle, firstly, determine whether the actual water absorption of the plants is within the predicted water absorption range. If it is, the efficiency is 100%; otherwise, the efficiency is determined during the previous irrigation cycle.

[0070] The water absorption efficiency of plants in each green area at each time period is the same as that of the previous irrigation cycle at each time period for each green area.

[0071] The actual water absorption of the plants in each section and the minimum water absorption of the plants under the optimal soil moisture content range in each greening area at each time period.

[0072] The ratio of the predicted water absorption rate at different speeds.

[0073] On the other hand, by statistically analyzing the water absorption efficiency of plants throughout all time periods of the previous irrigation cycle, the sufficiency of water absorption by plants in the green area during the previous irrigation cycle can be calculated. In this embodiment, the plant density of the green area during the previous irrigation cycle is constructed.

[0074] The mathematical formula for calculating the sufficiency of water absorption by a substance can be expressed as:

[0075]

[0076] In the formula, N represents the number of time periods in the previous irrigation cycle; P n This represents the water absorption efficiency of the plants in the nth time period of the previous irrigation cycle; K represents the sufficiency of water absorption by the plants in the green area during the previous irrigation cycle.

[0077] In the mathematical formula for calculating the sufficiency of water absorption by plants in the green area during the previous irrigation cycle, the impact of the sufficiency of water absorption by plants on the current irrigation cycle increases significantly towards the later stages of the cycle. Therefore, through... The absorption efficiency P in the later time period of the previous irrigation cycle nWhen the proportion of water absorption by the plants in the green area during the previous irrigation cycle increases, and the sufficiency of water absorption (K) is greater than 1, it indicates that the plants in the green area during the previous irrigation cycle have already absorbed enough water.

[0078] If the water supply is sufficient, reduce the irrigation amount appropriately in the next irrigation cycle; otherwise, increase the irrigation amount appropriately.

[0079] After determining the sufficiency of plant water absorption in the previous irrigation cycle, it is necessary to formulate the irrigation amount for the next irrigation cycle. When formulating the irrigation amount for the current cycle, it is essential to consider not only the irrigation amount and the sufficiency of plant water absorption in the previous cycle, but also various weather conditions during the current irrigation cycle. This requires predicting the water consumption of plants in each area based on the predicted weather conditions over a certain period, and taking into account the impact of predicted water consumption of plants in each green area, soil evaporation, and other variables related to soil moisture increases, to ensure that there is no excessive irrigation or rainfall leading to excessively high water content in the initial period of the next irrigation cycle, which could reduce plant water absorption or even cause flooding. Therefore, it is further necessary to calculate the predicted soil moisture content for each time period of the current irrigation cycle to support the calculation of the sufficiency of plant water absorption during this cycle. Therefore, this embodiment further includes the following steps.

[0080] Step S3: Based on the sufficiency of plant water absorption in the previous irrigation cycle and the change in soil moisture content in this irrigation cycle, obtain the predicted soil moisture content for each time period of this irrigation cycle.

[0081] Specifically, step S3 includes: obtaining the predicted soil moisture content of each green area in the second time period of the current irrigation cycle based on the soil moisture content of the last time period of each green area in the previous irrigation cycle, the irrigation amount of the previous irrigation cycle, the sufficiency of water absorption by plants in the previous irrigation cycle, the predicted precipitation in the first time period of the current irrigation cycle, the water absorption rate of plants under the soil moisture content in the first time period of the current irrigation cycle, the duration of the first time period of the current irrigation cycle, and the potential evaporation in the first time period of the current irrigation cycle; and obtaining the soil moisture content of each green area in the subsequent time periods of the current irrigation cycle based on the predicted soil moisture content, precipitation, evaporation, and the water absorption rate of plants under the soil moisture content in the subsequent time periods.

[0082] More specifically, firstly, several relevant meteorological data, such as precipitation, temperature, humidity, wind speed, and radiation, for each region in the future cycle are obtained from the meteorological bureau. The potential evaporation rate for each region in the future time period of this irrigation cycle is calculated using the Penman-Monteith formula (a known technique). Then, the soil moisture content for the next time period, calculated from the last time period of the previous irrigation cycle, is used as the initial moisture content for this irrigation cycle, and the irrigation amount from the previous irrigation cycle is used as the initial irrigation amount for this irrigation cycle. Based on the potential evaporation rate for each green area in the future time period of this irrigation cycle, the initial moisture content for this irrigation cycle, the initial irrigation amount, the sufficiency of water absorption by the plants in the area during the previous irrigation cycle, the predicted precipitation for each time period of this irrigation cycle, and the water absorption rate of the area at each moisture content, the soil moisture content of the green area in each time period of this irrigation cycle is calculated. Specifically, in this embodiment, the following mathematical calculation formula is constructed:

[0083]

[0084] In the formula, L' i L' represents the predicted soil moisture content for the next time period after the i-th time period of this irrigation cycle; L'0 represents the initial moisture content of this irrigation cycle; V represents the irrigation amount of the previous irrigation cycle; K represents the sufficiency of water absorption by the plants in the green area during the previous irrigation cycle. Since plants cannot survive to the current irrigation cycle when K = 0, it is clear that K ≠ 0; L' Ji This represents the predicted precipitation for the i-th time period of this irrigation cycle; T represents the duration of each time period in this irrigation cycle. This represents the rate at which plants absorb water during the first time period of this irrigation cycle, based on the sum of the initial water content L'0 and the initial irrigation amount V, and corrected by K. L' represents the rate at which plants absorb water at the predicted soil moisture content in the next time period after the (i-1)th time period of this irrigation cycle; zi L' represents the potential evaporation in the i-th time period of this irrigation cycle; i-1 This represents the predicted soil moisture content for the next time period after the (i-1)th time period of this irrigation cycle.

[0085] In the formula, when i = 1, that is, in the first time period of this irrigation cycle, This represents the soil moisture content during the first time period of the current irrigation cycle after irrigation, and L' represents the predicted precipitation during the i-th time period of the current irrigation cycle. Ji Predict the increase in soil moisture content for the next time period. This indicates that the plant water absorption is decreasing during the first time period of this irrigation cycle, and the potential evaporation L' during the i-th time period of this irrigation cycle. zi This also represents a reduction; when i>1, i.e., in a subsequent time period of the current irrigation cycle, the predicted soil moisture content L' of the next time period after the (i-1)th time period of the current irrigation cycle. i-1 The predicted precipitation L' for the i-th time period of this irrigation cycle. Ji As an increment This represents the amount of water absorbed by the plant in the next time period after the (i-1)th time period of this irrigation cycle, which is a decrease. L' represents the potential evaporation in the i-th time period of this irrigation cycle. zi This also involves reducing the amount of water; by summing the relevant increments and subtracting the increments of the predicted soil moisture content in the next time period after the i-th time period of this irrigation cycle, we can obtain the predicted soil moisture content in the next time period after the i-th time period of this irrigation cycle.

[0086] Therefore, the specific variables of soil moisture content increase or decrease in this irrigation cycle include: the predicted precipitation for each time period of this irrigation cycle, the water absorption rate of plants in each green area under the soil moisture content in each time period of this irrigation cycle, and the potential evaporation of each green area in each future time period of this irrigation cycle.

[0087] After obtaining the predicted soil moisture content for each time period of this irrigation cycle, the sufficiency of water absorption by the plants during this irrigation cycle can be further estimated, so as to adjust the initial irrigation amount for this irrigation cycle. Therefore, this embodiment further includes the following steps.

[0088] Step S4: Based on the predicted soil moisture content and the predicted water absorption range, determine the sufficiency of water absorption by the plants during this irrigation cycle.

[0089] Specifically, step S4 includes: obtaining the water absorption efficiency of plants in each green area for each time period of the current irrigation cycle based on the soil moisture content of each green area in each time period of the current irrigation cycle and the predicted water absorption range of plants in each green area for each time period under the optimal soil moisture content range; increasing the proportion of plant water absorption efficiency in each green area in the later time period of the previous irrigation cycle to the total water absorption efficiency in all time periods of the current irrigation cycle, thereby obtaining the sufficiency of plant water absorption in each green area in the current irrigation cycle.

[0090] More specifically, firstly, after obtaining the predicted soil moisture content for each time period of this irrigation cycle, the water absorption rate of the plants at the predicted soil moisture content for each time period of this irrigation cycle can be obtained based on relevant online data. The product of this water absorption rate and the duration of each time period in this irrigation cycle yields the water absorption of the plants in the green area for each time period. Then, it is determined whether the predicted water absorption of the plants is within their ideal water absorption range. If it is, their water absorption efficiency is 100%. If not, the ratio of the plant's predicted water absorption to the water consumption in each time period at the minimum absorption rate within the optimal moisture content range is taken as the water absorption efficiency of the plant in each time period.

[0091] Furthermore, the water absorption efficiency of plants is statistically analyzed for all time periods during this irrigation cycle to obtain the sufficiency of water absorption by plants in each green area during this irrigation cycle. In this embodiment, the mathematical formula for calculating the sufficiency of water absorption by plants in each green area during this irrigation cycle is as follows:

[0092]

[0093] In the formula, N represents the number of time periods in this irrigation cycle; P' n This represents the absorption efficiency in the nth time period of this irrigation cycle; M represents the sufficiency of water absorption by the plants in the green area during this irrigation cycle.

[0094] In the mathematical formula for calculating the sufficiency of water absorption by plants in the green area during this irrigation cycle, the impact of the sufficiency of water absorption by plants on the irrigation cycle increases significantly towards the later stages. Therefore, through... The absorption efficiency P in the later time period of this irrigation cycle n When the proportion of water absorption by the plants in the green area increases, and the degree of water absorption (M) is greater than 1 in this irrigation cycle, it indicates that the plants in the green area have absorbed enough water for this irrigation cycle, and the irrigation amount can be appropriately reduced during this irrigation cycle. Conversely, the irrigation amount should be appropriately increased. Therefore, this implementation further sets the following steps.

[0095] Step S5: Based on the sufficiency of water absorption by the plants during this irrigation cycle, adjust the initial irrigation amount for this irrigation cycle and irrigate the green area.

[0096] Specifically, step S5 includes: obtaining the initial irrigation correction amount for the current irrigation cycle based on the predicted sufficiency of water absorption by the plants in the area during the current irrigation cycle and the irrigation amount of the previous irrigation cycle; and irrigating each green area based on the initial irrigation correction amount for the current irrigation cycle.

[0097] More specifically, the mathematical formula for calculating the initial irrigation correction amount for this irrigation cycle in this embodiment is as follows:

[0098]

[0099] In the formula, V' represents the irrigation amount for this irrigation cycle; M represents the sufficiency of water absorption by the plants in the green area during this irrigation cycle. Since plants cannot survive to the next irrigation cycle when M=0, it is clear that M≠0; V' represents the initial irrigation correction amount for this irrigation cycle.

[0100] In the mathematical formula for calculating the initial irrigation correction amount for this irrigation cycle constructed above, V is used as the irrigation base, and M is used as the correction factor. This indicates the initial irrigation correction amount for this irrigation cycle.

[0101] Furthermore, using the corrected initial irrigation amount V' as the initial irrigation amount, the predicted sufficiency M of plant water absorption in this irrigation cycle is recalculated. The change in M ​​between two consecutive values ​​is checked to see if it is less than 0.05. If it is, the sufficiency M of plant water absorption in the green area during the last irrigation cycle is used as the correction factor to obtain the final initial irrigation correction amount for this irrigation cycle. If the change in M ​​between two consecutive values ​​is greater than or equal to 0.05, iterative calculations continue, recalculating the initial irrigation correction amount V' and the predicted sufficiency M of plant water absorption for this irrigation cycle until the change in M ​​between two consecutive values ​​is less than 0.05.

[0102] Furthermore, after step S5, the method also includes: based on the real meteorological data for each time period of this irrigation cycle, calculating the actual sufficiency of water absorption by plants in each green area for each time period of this irrigation cycle through step S4; if the actual sufficiency of water absorption by plants in a green area for a time period is less than the preset sufficiency threshold, and there is no effective rainfall in the green area in the meteorological data for the next few days, prompting the relevant parties to carry out emergency irrigation for the green area.

[0103] Specifically, based on the irrigation amount obtained for each green area in this irrigation cycle, each green area is irrigated. Real-time weather data is then acquired, and step S4 calculates the actual water sufficiency of the plants in each green area for each time period of this irrigation cycle. If the actual water sufficiency of the plants in a green area for a given time period is less than a preset sufficiency threshold of 0.6, and the meteorological bureau predicts no rainfall in the next few days, the relevant departments are alerted to organize emergency irrigation for the relevant green area.

[0104] This embodiment provides an intelligent irrigation and maintenance method for municipal greening plants. First, it acquires plant information and meteorological data for the municipal greening area. Then, based on the actual water absorption of the plants in the previous irrigation cycle and the predicted water absorption range of the plants within the optimal soil moisture content range of the greening area, it obtains the sufficiency of water absorption by the plants in the current irrigation cycle. Based on the sufficiency of water absorption by the plants in the previous irrigation cycle and the increase or decrease in soil moisture content in the current irrigation cycle, it obtains the predicted soil moisture content for each time period of the current irrigation cycle. Based on the predicted soil moisture content and the predicted water absorption range, it obtains the sufficiency of water absorption by the plants in the current irrigation cycle. Finally, based on the sufficiency of water absorption by the plants in the current irrigation cycle, it adjusts the initial irrigation amount for the current irrigation cycle to irrigate the greening area. This embodiment achieves precise control of the irrigation amount during irrigation of the greening area by collecting and analyzing information from multiple sources.

[0105] It should be noted that the order of the above embodiments of the present invention is merely for descriptive purposes and does not represent the superiority or inferiority of the embodiments. The processes depicted in the accompanying drawings do not necessarily require a specific or sequential order to achieve the desired result. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0106] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A method for intelligent irrigation and maintenance of municipal greening plants, characterized in that, The method includes: Step S1: Obtain plant information and meteorological data for municipal greening areas; Step S2: Based on the actual water absorption of the plants in the previous irrigation cycle and the predicted water absorption range of the plants under the optimal soil moisture content range in the greening area, obtain the sufficiency of water absorption by the plants in the previous irrigation cycle. Step S3: Based on the sufficiency of plant water absorption in the previous irrigation cycle and the change in soil moisture content in this irrigation cycle, obtain the predicted soil moisture content for each time period of this irrigation cycle. Step S4: Based on the predicted soil moisture content and the predicted water absorption range, determine the sufficiency of water absorption by the plants during this irrigation cycle; Step S5: Based on the sufficiency of water absorption by the plants during this irrigation cycle, adjust the initial irrigation amount for this irrigation cycle and irrigate the green area. Step S2 specifically includes: Based on the actual water absorption of plants in each green area at each time period in the previous irrigation cycle, and the predicted water absorption range of plants in each green area at each time period under the optimal soil moisture content range, the water absorption efficiency of plants in each green area at each time period in the previous irrigation cycle is obtained. Increase the proportion of water absorption efficiency of plants in each green area during the later time period of the previous irrigation cycle compared to all time periods of the previous irrigation cycle, and obtain the sufficiency of water absorption by plants in each green area during the previous irrigation cycle. The mathematical formula for calculating the sufficiency of water absorption by plants in the green area established in the previous irrigation cycle can be expressed as: In the formula, Indicates the number of time periods in the previous irrigation cycle; This represents the plant's water absorption efficiency during the nth time period of the previous irrigation cycle; This indicates the sufficiency of water absorption by plants in the green area during the previous irrigation cycle. The method for obtaining the absorption efficiency includes: determining whether the actual water absorption of the plants is within the predicted water absorption range. If it is, the absorption efficiency is 100%. If it is not, the absorption efficiency is the ratio of the actual water absorption of the plants in each green area for each time period during the previous irrigation cycle to the predicted water absorption at the minimum absorption rate under the optimal soil moisture content range for each green area for each time period. Step S3 specifically includes: Based on the soil moisture content of each green area in the last time period of the previous irrigation cycle, the irrigation amount of the previous irrigation cycle, the sufficiency of water absorption by plants in the previous irrigation cycle, the predicted precipitation in the first time period of the current irrigation cycle, the water absorption rate of plants under the soil moisture content in the first time period of the current irrigation cycle, the duration of the first time period of the current irrigation cycle, and the potential evaporation in the first time period of the current irrigation cycle, the predicted soil moisture content of each green area in the second time period of the current irrigation cycle is obtained. Based on the predicted soil moisture content, precipitation, evaporation, and plant water absorption rate at the corresponding soil moisture content for each green area in the subsequent time period of this irrigation cycle, the soil moisture content for each green area in the subsequent time period of this irrigation cycle is obtained. Step S5 specifically includes: Based on the predicted sufficiency of water absorption by plants in the area during this irrigation cycle and the irrigation amount of the previous irrigation cycle, the initial irrigation correction amount for this irrigation cycle is obtained; the mathematical formula for calculating the initial irrigation correction amount includes: In the formula, This indicates the adequacy of water absorption by the plants in the green area during this irrigation cycle. This indicates the initial irrigation correction amount for the current irrigation cycle. This refers to the amount of irrigation water used in the previous irrigation cycle. Irrigate each green area according to the initial irrigation correction amount for this irrigation cycle.

2. The intelligent irrigation and maintenance method for municipal greening plants according to claim 1, characterized in that, Step S1 specifically includes: Obtain plant information for municipal green areas, including plant species and the rate at which plants absorb water at different times and soil moisture contents; Obtain meteorological data for municipal green areas, including historical and future data on temperature, humidity, wind speed, radiation, and precipitation for each green area.

3. The intelligent irrigation and maintenance method for municipal greening plants according to claim 1, characterized in that, The actual water absorption of plants in each green area at each time period during the previous irrigation cycle is as follows: Based on the initial soil moisture content, precipitation, evaporation, and plant water absorption rate of each green area in the first time period of the previous irrigation cycle, obtain the soil moisture content of each green area in the second time period of the previous irrigation cycle. Then, iterate through the other time periods of the previous irrigation cycle to obtain the soil moisture content of each green area in all time periods of the previous irrigation cycle. Based on the plant water absorption rate under the soil moisture content of each green area at all time periods in the previous irrigation cycle, the actual water absorption of the plants in each green area at each time period in the previous irrigation cycle is obtained.

4. The intelligent irrigation and maintenance method for municipal greening plants according to claim 1, characterized in that, The predicted water absorption range of the plants in each greening area at each time period under the optimal soil moisture content range is as follows: The soil water content at which the plant absorbs water at its maximum rate under different soil moisture conditions at different time periods is recorded as the optimal water content required by the plant for the environment. An upper limit threshold for the optimal water content is preset. The range formed by the optimal water content and the upper limit threshold is recorded as the optimal soil water content range for the plant at different time periods. The minimum value among the right boundaries of the optimal water content range of all plants in a green area for a certain time period is recorded as the right boundary of the optimal water content range of the green area for that time period. The maximum value among the left boundaries of the optimal water content range of all plants in a green area for that time period is recorded as the left boundary of the optimal water content range of the green area for that time period. This yields the predicted water absorption range under the optimal soil moisture content range of the green area for that time period. By traversing each green area and each time period, the predicted water absorption range of plants under the optimal soil moisture content range in each green area and each time period is obtained.

5. The intelligent irrigation and maintenance method for municipal greening plants according to claim 1, characterized in that, The soil moisture content increase / decrease variables mentioned in step S3 for this irrigation cycle specifically include: the predicted precipitation for each time period of this irrigation cycle, the water absorption rate of plants in each green area under the soil moisture content for each time period of this irrigation cycle, and the potential evaporation of each green area in each future time period of this irrigation cycle.

6. The intelligent irrigation and maintenance method for municipal greening plants according to claim 1, characterized in that, Step S4 specifically includes: Based on the soil moisture content of each green area in each time period of this irrigation cycle and the predicted water absorption range of plants in each green area in each time period under the optimal soil moisture content range, the water absorption efficiency of plants in each green area in each time period of this irrigation cycle is obtained. Increase the proportion of water absorption efficiency of plants in each green area during the later time period of the previous irrigation cycle to the total water absorption efficiency during the current irrigation cycle, and obtain the water absorption sufficiency of plants in each green area during the current irrigation cycle.

7. The intelligent irrigation and maintenance method for municipal greening plants according to claim 1, characterized in that, Following step S5, the following is also included: Based on the real meteorological data for each time period of this irrigation cycle, step S4 calculates the actual sufficiency of water absorption by plants in each green area during each time period of this irrigation cycle. If the actual sufficiency of water absorption by plants in a green area during a time period is less than the preset sufficiency threshold, and there is no effective rainfall in the green area in the meteorological data for the next few days, the relevant parties are prompted to carry out emergency irrigation for the green area.

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