45 results about "Subirrigation" patented technology

The invention discloses a fertilizer suitable for saline-alkali soil and a preparation method and device thereof, and relates to the field of saline-alkali soil fertilizers.The fertilizer particles are of at least N layers of core-shell structures, first compositions are arranged on the odd layers from inside to outside, second compositions are arranged on the even layers from inside to outside, N is an odd number larger than or equal to 3, and the core-shell structures are of a core-shell structure. The composition I is prepared from the following raw materials: an organic base fertilizer, a nitrogen-phosphorus-potassium base fertilizer, ammonium lignosulfonate, amino acid, a microbial agent and a mariculture product extract. The fertilizer particle has an odd-layer core-shell structure, the outermost layer is nutrient substances, the problem that the composition I on the surface is rapidly dissolved along with irrigation when the fertilizer is just put into the saline-alkali soil is solved, the effect of rapidly improving the saline-alkali soil is achieved, and the survival rate of seedlings is increased. After the irrigation period is finished, the composition II protects the composition I on the inner layer and waits for the next irrigation period, so that the excessive concentration of the fertilizer in a short time can be avoided, the purpose of slowly releasing the fertilizer can be achieved, and the fertilization frequency of the saline-alkali soil is reduced.

The invention discloses an irrigation district water distribution scheduling method and device and a medium, belongs to the field of irrigation district management, and aims to solve the problem that accurate irrigation cannot be uniformly and efficiently carried out, and the method comprises the following steps: determining a digital elevation model and a crop planting distribution diagram of an irrigation district; according to the digital elevation model and the crop planting distribution map, determining different irrigation subareas of the irrigation area, and a water delivery energy consumption coefficient, a crop suitability coefficient and a subarea water demand critical period of each irrigation subarea; constructing a water delivery energy matrix of the irrigation area according to the water delivery energy consumption coefficient of each irrigation subarea and the irrigation water demand in the irrigation period; determining a rotation irrigation group of the irrigation area according to the water delivery energy weight combination and the water delivery energy matrix of each irrigation subarea in the current irrigation period; and determining the irrigation time sequence of the rotation irrigation group according to the crop suitability coefficient of each irrigation subarea and the subarea water demand critical period. And water distribution in the irrigated area can be more efficiently and reasonably carried out.

The invention relates to the technical field of agricultural irrigation, in particular to an agricultural irrigation intelligent monitoring system based on multi-modal data. The system comprises a data acquisition module for acquiring humidity data in a period by using a humidity sensor on each area of a farmland to form a humidity sequence; acquiring different types of irrigation data of each time of irrigation in different regional periods; the region similarity analysis module is used for acquiring the soil state similarity of the two regions according to the humidity difference and the irrigation data difference in the periods of the two regions; the clustering analysis module is used for clustering all the regions to obtain different class clusters; the areas in one class cluster form a to-be-analyzed area; and the water demand analysis module obtains the final water demand coefficient of the to-be-analyzed region, constructs a water demand model, and then brings the area of the to-be-analyzed region and the final water demand coefficient into the water demand model to obtain the water demand of the to-be-analyzed region. The method can accurately determine the amount of water needing to be irrigated in each to-be-analyzed area.

The utility model provides a seeding device for agricultural planting, which relates to the field of seeding for agricultural planting and comprises a support frame, a water tank is mounted on the upper surface of the support frame, a water pump is placed in the water tank, the output end of the water pump is communicated with a hose, one end of the hose is communicated with adapters, and the outer surfaces of the adapters are jointly communicated with two water pipes. Seeds can be watered by arranging the water pump and the water spraying nozzles, after the seeds sequentially fall into the soil from the empty groove, the water pump operates to pump water in the water tank, a stable water flow conveying channel is formed along the hose, when water flow reaches the adapter, the water flow can flow into the water tank, and the water spraying nozzles are communicated with the water pipes. Water is divided into two branches to be injected into the water pipes on the two sides, then the water is sprayed out through the water spraying nozzles in the empty grooves, in this way, directional watering can be achieved while sowing is conducted, time delay of traditional secondary irrigation is avoided, and water resource loss is reduced to the maximum extent through an accurate positioning sprinkling irrigation mode.

The application relates to the field of crop seeding technology, and particularly discloses a wheat-corn interplanting self-adaptive seeding width regulation method based on crop and soil parameter identification, which comprises the following steps: normalizing soil body penetration resistance data to generate soil body penetration resistance score values and dividing seeding condition grades; jointly analyzing wheat grain moisture content data and soil slope data to construct a slope moisture content correlation matrix and perform dimension expansion to obtain interference characteristic factors; inputting wheat row spacing data, the seeding condition grades and the interference characteristic factors into a decision rule library to generate seeding width values and seeding density values; converting the seeding width values into channel boundary coordinate instructions of seeding machines, and driving the seeding machines to adjust the operation width of corn seeding according to the channel boundary coordinate instructions; and synchronously regulating the single irrigation amount of wheat medium-shallow buried drip irrigation. The application can improve the seeding precision and resource utilization efficiency of wheat-corn interplanting operation.

The invention discloses a water and fertilizer integrated drip irrigation and fertilization method and system for a bamboo forest based on soil detection, and belongs to the technical field of intelligent forestry and precise irrigation. According to the method, by arranging a soil multi-parameter sensor network, bamboo forest soil moisture and the content of key nutrients such as nitrogen, phosphorus and potassium are monitored in real time; based on the monitoring data, respectively calculating a deficit index reflecting the moisture condition and a demand index reflecting the multi-nutrient comprehensive demand degree; in combination with the current growth stage of the bamboo forest, dynamically determining the water demand of each irrigation and the application amount of the special fertilizer through an intelligent decision-making model, and accurately preparing a liquid fertilizer according to the actual deficit proportion of each nutrient; finally, according to the difference of water and fertilizer requirements of different areas in the land parcel, an irrigation system is controlled to achieve zoned variable precise fertilization. According to the method, collaborative intelligent decision and on-demand accurate supply of moisture and nutrients are realized, the utilization efficiency of water and fertilizer resources is remarkably improved, the labor cost and the environmental risk are reduced, and a complete technical solution is provided for modernization accurate management of the bamboo forest industry.

The invention discloses construction and system implementation of a water and fertilizer integrated accurate control model. The system determines the appropriate single-time irrigation amount (irrigation quota) according to the root system distribution and the soil type of the planting object; reasonably distributing the demands for different nutrients in different growth periods of the plant to each growth period of the plant according to a nutrient demand curve, and determining the fertilizer dosage in each growth period; and considering irrigation amounts and fertilization amounts in different growth periods, determining a fertilization concentration suitable for single operation, calculating a series of suitable nutrient solution preparation concentrations, and recommending the concentrations to a user for selection. Model construction is presented in a software mode, peripheral electrical equipment is controlled directly or remotely through a controller, and the function of precise irrigation and fertilization is achieved. Through the construction and implementation of the system, the use convenience of the intelligent water and fertilizer integrated system can be greatly enhanced, a set of simple and easy-to-use production tool is provided for planting farmers and agricultural technical service personnel, and agricultural precise irrigation and precise fertilization decision making are assisted.

The invention discloses a special forest-fruit water-fertilizer collaborative precise irrigation method using tunnel gushing wastewater, relates to the field of water-fertilizer collaborative irrigation, and aims to construct a tunnel gushing wastewater water quality dynamic database, establish a mapping relationship between special forest-fruit physiological signals and water-fertilizer demands, and integrate a drought valley microclimate mutation response mechanism. And calculating a single irrigation amount and an exogenous fertilizer amount based on a three-dimensional coupling water and fertilizer proportioning coefficient algorithm, and generating a dynamic water and fertilizer irrigation execution scheme. According to the method, the resource utilization of the tunnel gushing wastewater is realized, the gushing water subjected to pretreatment and deep purification is used for irrigation of characteristic forests and fruits, the problem of shortage of irrigation water in arid river valleys is effectively solved, and the waste of water resources is reduced. Part of exogenous fertilizer is replaced with gushing water natural mineral substances, chemical fertilizer input is reduced, planting cost is reduced, potential pollution of chemical fertilizer to soil and surrounding environment is reduced, and the requirement for green agriculture development is met.

The application relates to the technical field of irrigation devices, in particular to a water conveying device for farmland water conservancy irrigation. In view of the problem that the existing device leaves a hole after being retracted underground, and the soil around the hole falls into the hole and affects the normal work of the existing device, the water conveying device comprises a protection shell, a fixed pipe arranged in the protection shell, a sliding pipe slidingly connected with the fixed pipe, a first spring arranged between the sliding pipe and the fixed pipe, an adjusting shell communicated with the upper side of the sliding pipe, the adjusting shell being rotationally connected with the sliding pipe, a nozzle communicated with the upper side of the adjusting shell, and a protection cover rotationally connected with the upper side of the protection shell. The protection cover is opened during irrigation, the sliding pipe is extended out of the fixed pipe, the sliding pipe is retracted into the fixed pipe when irrigation is stopped, and the protection cover is closed, so that the nozzle is protected, the sliding pipe can be extended out during next irrigation, and the normal use of the device is ensured.

The embodiment of the invention discloses an intelligent irrigation control method and system, electronic equipment and a storage medium. The method comprises the following steps: acquiring growth stage information of a target crop, and determining environmental parameter conditions based on the growth stage information; acquiring soil environment parameters related to the crop root zone of the target crop; judging whether the soil environment parameters meet environment parameter conditions or not; if not, whether the target crop needs supplementary irrigation is determined according to the illumination accumulated radiation quantity from the last irrigation moment to the current moment; if yes, determining that the target crop does not need supplementary irrigation; when the target crop needs supplementary irrigation, the supplementary irrigation water and fertilizer amount is determined according to the illumination accumulated radiation amount, and the supplementary irrigation water and fertilizer amount is sent to the water and fertilizer machine to control the water and fertilizer machine to execute supplementary irrigation. According to the scheme, decision errors caused by single parameters can be effectively avoided, and the irrigation decision accuracy is improved.

An automated irrigation system includes a movable structure that has nozzles for spraying water on aimed area of ground. A controller selects a nozzle and determines a location in an unwatered area to be sprayed after the movable structure has moved forward. A predictive model that takes into account look-ahead sensor data for the location before watering and prior look-behind sensor data from a last time the location was watered is used to generate a watering prescription for the nozzle. After watering, the controller determines an error in detected moisture of the location according to updated look-behind sensor data and updates the predictive model if the error exceeds a threshold. When generating watering prescriptions for multiple nozzles, the controller normalizes their duty cycles by adjusting the speed of the movable structure and further customizes their nozzle control signals to ensure the nozzles do not turn off at same time.

The utility model relates to the technical field of pseudo-ginseng planting, in particular to quantitative watering equipment for pseudo-ginseng planting, which comprises a base, a weighing platform arranged at the top of the base, four mounting grooves formed in the top of the weighing platform, weighing sensors arranged in the mounting grooves, a supporting platform arranged at the top of the weighing platform, and four pressure-bearing columns arranged at the bottom of the supporting platform. A water storage tank is placed at the top of the supporting platform, a water outlet pipe is arranged at the bottom of the left side of the water storage tank, an irrigation water pump is arranged at the top of the base, and the input end of the irrigation water pump is communicated with the water outlet pipe through a water pumping pipe. According to the quantitative watering equipment for pseudo-ginseng planting, the weight change of the water storage tank is accurately measured through the weighing sensor, accurate control over the water injection amount is achieved, it can be guaranteed that a worker adjusts the required water amount according to the growth stage and the planting area of pseudo-ginseng every time irrigation is conducted, and the situation of excessive and insufficient watering is avoided; and the accuracy of moisture management is improved.

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.

This invention is related to a gravity flow, multipurpose bidirectional nonpressurized climate smart subirrigation conduit apparatus for managing soil moisture and growing plants. The subirrigation conduit apparatus creates a suspended virtual water table at the desired buried depth, thus creating an anaerobic saturated zone and a capillary fringe. The capillary fringe is described in the art as a moisture zone that has perfect air and moisture mixture for plant growth, can also be used to irrigate with high turbidity obstruction liquids such as precipitation runoff and alternative waters such as untreated greywater. When too much water is present within the landscape, the Multipurpose bidirectional nonpressurized climate smart subirrigation conduit apparatus can be used in reverse flow to drain the landscape. Bidirectional nonpressurized flow is achieved by gravity water equalization thus cutting any need for energy consumption.

The invention relates to the technical field of agricultural cultivation, in particular to a saline-alkali soil sorghum water-fertilizer-salt comprehensive regulation cultivation method which comprises the following steps: before sowing, measuring basic physicochemical indexes of saline-alkali soil to determine the saline-alkali obstacle degree; performing irrigation operation to realize initial rapid conditioning; magnetic treatment water is adopted for first-time irrigation so as to guarantee seedling emergence and inhibit surface salt accumulation; dynamically monitoring salinity, moisture, pH value indexes of root zone soil and plant growth conditions; inputting the data obtained by dynamic monitoring and the basic physicochemical indexes into a pre-constructed water-fertilizer-salt coupling decision model; the water is applied to the sorghum root zone through an irrigation system, and the irrigation water amount aims at achieving dynamic balance of water and salt in the root zone; the improvement effect of the current season is evaluated, and feedback data is provided for initial conditioning of cultivation in the next season. The effect of the cultivation technology can be evaluated through the harvested soil feedback data, so that the cultivation method is continuously optimized, and a circularly improved benign mechanism is formed.

The invention relates to a farmland soil moisture content prediction and irrigation method, which comprises the following steps of: firstly, acquiring a soil moisture content prediction value of a target farmland before irrigation, then generating an irrigation instruction according to the soil moisture content prediction value, performing irrigation operation on the target farmland once, and acquiring a soil moisture content measured value of a soil layer; comparing the measured value of the soil water content with the corresponding predicted value of the soil water content, judging whether irrigation parameters in the subsequent irrigation process need to be corrected or not, determining a parameter adjustment basis if the irrigation parameters need to be corrected, and then adjusting the irrigation parameters according to the adjustment direction and the adjustment level. And selecting a corresponding parameter value from the plurality of discrete irrigation parameter values, and replacing the irrigation parameter adopted in the subsequent irrigation process, so that the subsequent irrigation process is carried out under the condition that the subsequent irrigation process is replaced. In a word, the method has the advantages of being simple in implementation mode, low in degree of dependence on a prediction model, stable in regulation and control process, high in parameter adjustment controllability and suitable for a complex farmland environment.

The application is suitable for the technical field of irrigation control systems, and provides an intelligent irrigation water resource control system for water distribution in irrigation areas, which comprises a control center, a sensor unit, an irrigation unit, a pump suction unit and a silt-cleaning pond, the control center comprises a real-time data module, a data-driven model and a real-time data fusion module, the real-time data module is used for receiving multi-source real-time data, the multi-source real-time data comprises soil moisture content, environmental temperature and humidity of the irrigation area and weather forecast data, the data-driven model comprises crop water requirement and growth conditions, the real-time data fusion module trains a model according to multi-source real-time data and historical data, takes a digital twin as a simulation environment, and simulates and deduces different irrigation schemes in multiple future periods before each irrigation decision, the application predicts the irrigation based on the digital twin and weather forecast, avoids the 'collision' with rainfall, and can save water by 15% to 25% in expectation.

The system may include a secondary irrigation feature that determines a percent of overlap of each of a plurality of submodules in a second lift over each of a plurality of submodules in a first lift and adjusts at least one of leaching operations or a leaching model based on the total tonnage weighted average of metal in the second lift. The method may further comprise determining an acid gap based on a difference between total acid given and total acid consumption; and further adjusting at least one of the leaching operations or the leaching model based on the acid gap. The method may further comprise determining a percentage of compacted material based on the material that is compacted and irrigated divided by the material that is irrigated; and further adjusting at least one of the leaching operations or the leaching model based on the percentage of compacted material.

The invention discloses an outdoor crop water and fertilizer integrated intelligent management and control method, device and equipment and a medium, and relates to the technical field of intelligent agriculture. According to the method, the soil water content, the effective radiation cumulant and the fertigation time interval of a controlled area are obtained, and when the soil water content reaches the lower limit of the soil water content, fertigation is conducted on the controlled area according to the first fertilization concentration until the irrigation amount is reached; when the effective radiation cumulant reaches the solar radiation cumulant threshold value and / or the fertigation time interval reaches the longest fertigation interval, fertigation is conducted on the controlled area according to the second fertilization concentration until the irrigation amount is reached. According to the invention, a composite trigger mechanism of three factors of soil moisture, solar radiation and time is combined, accurate control of outdoor water and fertilizer integration is carried out, and intelligent irrigation and fertilization with accurate opportunity, reasonable proportion and rapid response can be realized under the condition of remarkable natural environment fluctuation.

The invention provides a green irrigation system and method for a high and steep rock slope. The green irrigation system comprises a water collecting pool arranged at the top of the high and steep rock slope and a water storage pool arranged at the bottom of the high and steep rock slope. An irrigation pipe is arranged between the reservoir and the water collecting tank along the high and steep rock slope surface, a sprayer is arranged on the irrigation pipe, and the end, located in the reservoir, of the irrigation pipe is connected with a first water pump; a water conveying pipe is further arranged between the water storage pool and the water collecting pool, and a second water pump is connected to the end, located in the water storage pool, of the water conveying pipe. According to the system, infiltration and runoff water and natural rainfall after each time of irrigation are recycled through the reservoir, then the recycled water is conveyed into the water collecting tank through the second water pump, then the recycled water is conveyed into the irrigation pipe through the first water pump to irrigate vegetation on the high and steep rock slope surface, and the utilization rate of water resources is increased.

This invention discloses a method for promoting methane absorption in grasslands during the autumn freeze-thaw period through autumn irrigation. Irrigation is performed on grasslands during the autumn soil moisture sensitive period, defined as a climate-average temperature of 22–10°C. The autumn freeze-thaw period is defined as the start of the period when the minimum soil temperature remains below 0°C for three consecutive days and the end of the period when the maximum soil temperature remains below 0°C for three consecutive days. Three treatments were applied: light rainfall enhancement, moderate rainfall enhancement, and a natural precipitation control. Irrigation was conducted during the autumn soil moisture sensitive period, with a single irrigation volume of 12–15 mm, and 3–4 irrigations were performed throughout the season. The target soil moisture content was maintained at 15%–25%, resulting in a maximum increase of 91.3% in the abundance of the methane oxidation functional gene pmoA. Methane flux increased by 111.7% compared to the control, and methane oxidation potential increased by 97.6%. This method can meet the requirements for grassland greenhouse gas emission reduction under mid-latitude precipitation variation scenarios.

The utility model discloses a garden design landscape flower stand, which relates to the technical field of garden landscape facilities and comprises a flower stand main body, a table top is arranged at the top of the flower stand main body, water retaining strips are arranged on the top surface of the periphery of the table top, a plurality of strip-shaped gaps are formed in the surface of the table top, and a drainage mechanism is arranged on the inner wall of the flower stand main body. A water outlet is formed in one side of the inner wall of the flower stand main body, the water outlet is formed in the confluence position of the drainage mechanism, and a water storage tank is arranged on the side, provided with the water outlet, of the flower stand main body. According to the flower stand, rainwater and redundant irrigation water falling on the table board are blocked and prevented from being lost through the water retaining strips arranged on the periphery of the table board, then the rainwater and the redundant irrigation water permeate through the gaps formed in the table board and enter the internal drainage mechanism, and finally the redundant water is led to the water outlet and fed into the water storage tank, so that the redundant water can be conveniently recycled during next irrigation; the defect that water resources are wasted easily during irrigation and maintenance of an ordinary flower stand is overcome.

The utility model discloses a channel water distribution gate which comprises a gate body and a water distribution structure. By arranging the water diversion structure, after the device is installed on a water channel, the flow guide pipe and the assembly flange are located in the water channel at the moment, then the driving component is used for driving the traction rope to descend, and therefore the pipe opening of the flow guide pipe is driven to be lower than the water level in the water channel, and water in the water channel can enter the farmland due to water level difference at the moment; at the moment, it needs to be guaranteed that no new water is injected into the water in the water channel, the water level in the water channel is lowered after the water in the water channel is introduced into the farmland, when the water level in the water channel is lower than the flow guide pipe, water level difference is generated, the flow guide pipe stops injecting water into the farmland, and therefore even irrigation can be achieved only by controlling the water amount in the water channel every time irrigation is conducted; the situation that a water gate plate of a traditional water gate structure needs to be opened and closed before and after irrigation each time is broken through, the irrigation efficiency is improved, the height of the flow guide pipe is changed through the driving component, and therefore the amount of water introduced into a farmland can be controlled.

The invention discloses an irrigation method for increasing the yield of medicago sativa under water deficit. The irrigation method comprises the following steps of 1, medicago sativa planting, wherein strip sowing with the row spacing being 20 cm, the sowing rate being 20 kg / ha and the sowing depth being 5 cm is adopted, and 2, medicago sativa irrigation is conducted, wherein the irrigation rate is kept twice a week from sowing to the seedling stage, and the total irrigation amount is 50 mm. Water deficit irrigation is started in the alfalfa branching period, the irrigation amount is calculated according to the local actual crop evapotranspiration amount, the moderate water deficit and the severe water deficit are 2 / 3 and 1 / 3 of the actual crop evapotranspiration amount respectively, and the irrigation frequency is one time per week. And (3) irrigation system: when an underground drip irrigation system is designed, a drip irrigation belt is buried at a position 20cm underground before alfalfa is sown. The alternate subsurface drip irrigation comprises a subsurface drip irrigation system 1 and a subsurface drip irrigation system 2. One set of underground drip irrigation system is used for one-time irrigation, and the other set of underground drip irrigation system is used for next-time irrigation. The alternate underground drip irrigation method is an effective way for improving the yield of alfalfa under the condition of water deficiency.

The utility model relates to a drainage and anti-sliding system for a large-gradient planting sloping roof green belt, and belongs to the technical field of gradient planting sloping roofs. The drainage and anti-sliding system comprises a roof surface, five partition plates are fixed to the top end of the roof surface, five grid plates are connected to the outer surfaces of the five partition plates in a clamped mode, and a water storage bin and a water receiving bin are fixed to the upper end and the lower end of the roof surface correspondingly; a treatment structure is arranged in the water receiving bin; and the processing structure comprises a filter screen, two cross rods and two groups of hinged rods which are fixedly mounted at the lower end of the filter screen in a hinged manner. According to the drainage and anti-sliding system for the green belt of the steep-slope planting sloping roof, redundant water generated by irrigation can be recycled and treated, the situation that the guide pipe and the water suction pump are blocked by impurities contained in the water when the water is used for irrigation again, and irrigation is affected is avoided, and therefore the redundant treated irrigation water can be used for irrigation again to green plants, and the irrigation efficiency is improved. The phenomenon that excessive irrigation water generated by irrigation can take away nutrients in soil, and consequently poor green plant production is caused can be effectively reduced.

The invention relates to the technical field of slope ecological slope protection vegetation irrigation, in particular to a plateau region slope ecological slope protection intelligent irrigation system and method, and the method comprises the steps: continuously obtaining soil monitoring parameters and meteorological monitoring parameters of a slope through a monitoring module; dividing the slope into a weak dissimilatory tendency category or a strong dissimilatory tendency category based on the soil dissimilatory tendency characterization value; for the weak dissimilatory tendency category, the control module periodically controls an irrigation nozzle to operate based on a soil water content reference value; for the strong dissimilatory tendency category, the control module periodically judges whether the soil in each analysis area is qualified or not based on the average water seepage rate, and when it is determined that the soil in the analysis area is abnormal, the irrigation flow rate of a single analysis area is adjusted according to a soil dissimilatory tendency characterization value; after single-time irrigation, whether an over-irrigation mode needs to be started or not is judged based on the soil conductivity. The irrigation parameters are specifically determined according to the actual situation of the ecological slope protection, and the irrigation efficiency is improved.

The invention provides a saline soil improvement system and method for constructing a vertical flow channel and performing fractional-frequency leaching, the system comprises a physical barrier breaking layer, the vertical flow channel, a fractional-frequency leaching water supply system and an earth surface evaporation-inhibiting salt-controlling layer, specifically, a target land parcel to be improved is deeply ploughed to form the physical barrier breaking layer, then drilling is performed to form the vertical flow channel, and the physical barrier breaking layer is formed by the vertical flow channel and the fractional-frequency leaching water supply system. A vertical dominant flow channel network penetrating through the water blocking layer is constructed, irrigation and leaching are conducted at least three times with the decreasing water amount by means of the irrigation water frequency, after irrigation and leaching are completed, a plastic film is covered to form a ground surface evaporation restraining and salt controlling layer, water evaporation and salt return are restrained, and improvement is completed. According to the method, a vertical flow channel is constructed, a rapid channel for salt to flow downwards is physically opened, the problem of upper blocking and lower flooding caused by a water blocking layer is fundamentally solved, the salt discharging efficiency is high, water resources are saved by adopting a frequency division leaching mode, the salt return phenomenon is effectively inhibited by matching with plastic film covering after leaching, and the improvement achievement is consolidated.

The application discloses a crop irrigation quota determination method and relates to the field of water resource management.The method comprises the following steps: obtaining basic data; the basic data comprises meteorological data, soil physicochemical property data and crop characteristic data; calculating a leaf area index curve based on the meteorological data, the soil physicochemical property data and the crop characteristic data; wherein the leaf area index curve is used for representing the relationship between a crop growth period cumulative heat unit fraction and a leaf area index; the crop growth period cumulative heat unit fraction is related to temperature; calculating a dynamic crop coefficient based on the meteorological data and the leaf area index curve; calculating soil water content based on the dynamic crop coefficient, the meteorological data and the soil physicochemical property data; determining irrigation water quantity of each time based on the principle of ensuring that the soil water content is in a preset range, accumulating the irrigation water quantity of each time and determining a crop irrigation quota.

The application relates to the technical field of vegetable planting, and discloses a vegetable planting drip irrigation and fertilization device, which comprises a vehicle body, a fertilizer cylinder is fixedly connected to the top of the vehicle body, a first rotating rod and a first rotating disc are driven to rotate through a motor, linkage of a fixing rod, a sleeve rod and a rectangular rotating shaft is used to convert the rotary motion into periodic reciprocating swing of a second rotating rod. The swing directly drives a spraying pipe to reciprocate left and right, the dynamic spraying mode greatly expands the effective coverage area of single irrigation, eliminates the irrigation dead angle generated by the traditional fixed nozzle, and the second rotating disc and the first abutting rod arranged on the third rotating rod rotate synchronously with the left and right swing of the spraying pipe, and the spraying pipe as a whole generates an axial movement, so that the water and fertilizer spraying track is no longer a simple fan-shaped plane, the irrigation dead angle is greatly eliminated, the water flow from different directions and distances can cover the whole single irrigation period, and the coverage blind area in the fixed or single swing mode is completely avoided.

The application relates to a real-time weight-based facility substrate blueberry environment decision-making irrigation method, which comprises the following steps S1: establishing a linear relationship between the substrate weight of blueberries and the substrate humidity; S2: correcting the linear relationship obtained in step S1 by using the total weight of real-time blueberry plants and substrates to obtain a corrected linear relationship; S3: assembling a weight monitoring unit, collecting the total weight of real-time blueberry plants and substrates, and constructing a total weight dataset; S4: assembling an environment factor collecting unit, constructing an environment factor dataset; assembling an irrigation discharge liquid monitoring unit, and constructing a discharge liquid volume dataset; S5: according to the environment factor dataset, the total weight dataset and the discharge liquid volume dataset, establishing an environment decision-making irrigation model with four parameters of an irrigation start time, an irrigation end time, an irrigation frequency and a single irrigation amount; and S6: assembling an irrigation execution unit, realizing quantitative irrigation according to the irrigation decision made by the environment decision-making irrigation model.