A large-span high-clearance photovoltaic sand control system combining sprinkling irrigation and mechanized operation

Abstract

The application discloses a photovoltaic sand control system combining large-span high-clearance with sprinkling irrigation and mechanized operation, comprising a photovoltaic power generation and mechanized operation space unit, a cloud platform control mechanism and a sprinkling irrigation mechanism. The comprehensive photovoltaic sand control system integrates photovoltaic power generation, intelligent water and fertilizer management, mechanized operation and ecological restoration. The system constructs a large-span high-clearance operation space, integrates an intelligent sprinkling irrigation unit and a smart control cloud platform, and realizes precise water and fertilizer integrated automatic management through the collaborative work of soil and meteorological sensors, a central controller and an execution mechanism. The system supports large-scale sand control and agricultural machinery to freely pass under the photovoltaic panel for operation, effectively solves the core pain points of low mechanization degree and extensive irrigation mode of traditional photovoltaic sand control, achieves efficient synergy of photovoltaic power generation, ecological restoration and modern agricultural planting, and greatly improves the scale, efficiency and intelligent level of sand control.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic power generation and the intersection of ecological governance and smart agriculture. Specifically, it relates to a comprehensive photovoltaic desertification control system that integrates a large-span, high-clearance photovoltaic support structure, an intelligent sprinkler system, and supports large-scale mechanized operations. Background Technology

[0002] Driven by the dual demands of ecological environment governance and energy structure transformation, photovoltaic desertification control projects in desert areas have become a key measure to achieve coordinated development of ecological restoration and clean energy. The traditional "photovoltaic desertification control" model, by combining photovoltaic power generation with desert ecological restoration, has to some extent achieved a preliminary integration of sandy land utilization and environmental protection, providing a new approach to desertification control. However, as desertification control projects advance towards large-scale, efficient, and sustainable development, existing technologies have gradually revealed many limitations, such as the following problems: Mechanized operations are limited. Traditional photovoltaic supports have low clearance and small span, which not only block sunlight and inhibit the growth of plants under the panels, but also hinder the entry of large-scale desertification control and agricultural machinery. The treatment under the panels relies on inefficient manual operation, and equipment such as grass checkerboard laying machines and seeders are difficult to operate, resulting in high costs and low efficiency in the initial stage of desertification control and the later stage of planting and maintenance.

[0003] Irrigation and management methods are extensive, relying heavily on manual or simple timed drip irrigation. This fails to accurately supply water and fertilizer based on soil moisture and crop nutrient requirements, resulting in severe water waste and poor fertilizer efficiency. Furthermore, irrigation operations are disconnected from mechanized processes, lacking sufficient intelligent technology, making it difficult to guarantee the sustainability of desertification control efforts. The system suffers from poor coordination. Traditional solutions fail to achieve deep integration of photovoltaic power generation, ecological restoration, and agricultural planting. Each link operates independently, lacking a unified intelligent management and control platform, thus failing to achieve optimal resource allocation and efficient utilization. Summary of the Invention

[0004] The purpose of this invention is to provide a photovoltaic desertification control system that combines large-span, high-clearance sprinkler irrigation with mechanized operations, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a photovoltaic desertification control system with a large span and high clearance, combining sprinkler irrigation and mechanized operation, characterized in that it includes a photovoltaic power generation and mechanized operation space unit (1), a cloud platform control mechanism (2), and a sprinkler irrigation mechanism (3). The photovoltaic power generation and mechanized operation space unit (1) includes a cable-structured flexible photovoltaic support, photovoltaic modules and power transmission cables. The cable-structured flexible photovoltaic support includes multiple support side columns (101), multiple support middle columns (104) and multiple support stay cables (102). The top of each support side column (101) and support middle column (104) is equipped with two support component cables (106) and one support lower layer cable (107). The outer walls of each pair of support side columns (101) and support middle columns (104) in the same horizontal direction are fixedly connected with support beams (105). Each support side column (101) is fixedly connected with at least two support stay cables (102), thus forming a support plane for installing photovoltaic modules. The cloud platform control mechanism (2) includes a monitoring mechanism and a controller. The soil monitoring module, water monitoring module and fertilizer monitoring module of the monitoring mechanism are buried in the planting area under the photovoltaic module. The meteorological parameter monitoring module, crop spectrum inversion monitoring module and field monitoring module of the monitoring mechanism are installed on the side column (1) and the middle column (104) of the support to collect the corresponding monitoring data. The controller controls the operation status of the sprinkler irrigation mechanism (3) according to the monitoring data. The sprinkler irrigation mechanism (3) is installed on the photovoltaic power generation and mechanized operation space unit (1) and is used to configure water and fertilizer and transport water and fertilizer along the layout direction of the lower layer cable (107) of the support for sprinkler irrigation.

[0006] Preferably, the sprinkler irrigation mechanism (3) includes a water supply tank (302), a fertilizer addition tank (303), and a delivery pump (304). The water supply tank (302) and the fertilizer addition tank (303) are connected through a main water supply pipe (305). The fertilizer addition tank (303) is connected to the delivery pump (304) through a water-fertilizer main pipe (306). The outlet of the delivery pump (304) is connected to a horizontal main pipe (307). Each of the intermediate columns (104) of the support is provided with a vertical branch pipe (308) on its outer wall. One end of the bottom of the multiple vertical branch pipes (308) is connected to the... The horizontal main pipe (307) is connected, and a horizontal branch pipe (309) is provided on one side of the beam (105) of the support. The top end of the multiple vertical branch pipes (308) is connected to the horizontal branch pipe (309). Multiple longitudinal branch pipes (310) are connected to the horizontal branch pipe (309) at equal intervals. Several sprinkler heads (311) are provided on the outer wall of the longitudinal branch pipe (310). An electric diversion valve (312) is installed at the bottom of each vertical branch pipe (308). The fertilizer addition tank (303) is electrically connected to a fertilizer controller (301).

[0007] Preferably, the water supply tank (302) and fertilizer addition tank (303) are configured with water and fertilizer mixture according to the controller instructions of the cloud platform control mechanism (2), and the spray head installed along the lower side of the support cable (107) by the delivery pump and delivery pipeline performs sprinkler or drip irrigation operation according to the instructions received by the electric diversion valve.

[0008] Preferably, the end of the support component cable (106) passes through the top of the support side column (101), and a support inclined pile (103) is provided on one side of the support side column (101). One end of the support inclined cable (102) is fixedly connected to the top of the support inclined pile (103), and a support wind-resistant truss (108) is fixedly connected to the support component cable (106) and the support lower layer cable (107).

[0009] Preferably, the total span of the photovoltaic power generation and mechanized operation space unit (1) is not less than 30m, the total net height is not less than 4.5m, and the row spacing between every two intermediate columns (104) of the support is 9-12m.

[0010] Preferably, a plurality of photovoltaic modules (109) are installed on the support assembly cable (106).

[0011] Preferably, the longitudinal branch pipe (310) is fixed to the bottom of the lower cable (107) of the support by a number of support hanging rings (111), and the sprinkler head (311) is a rotary sprinkler head.

[0012] Preferably, the vertical branch pipe (308) is fixed to the middle column (104) of the support by the middle column clamp (110).

[0013] Preferably, the system according to this application further includes a machinery scheduling and management subsystem that is communicatively connected to the controller, for planning and monitoring the operation path and operation time of large machinery in the mechanized operation space, and coordinating with the operation plan of the sprinkler unit.

[0014] Preferably, when the soil moisture value detected by the cloud platform control mechanism (2) is lower than the preset moisture threshold, or the soil fertility value detected is lower than the preset fertility threshold, and within a predetermined time window during which there is no mechanical operation in the photovoltaic power generation and mechanized operation space unit set by the mechanical scheduling and management subsystem, the cloud platform control mechanism (2) generates a control command to start sprinkler irrigation.

[0015] Compared with existing technologies, the beneficial effects of this invention are as follows: According to the technical solution of this application, photovoltaic modules are laid by sequentially installing components such as the side columns, middle columns, and central beams of the support frame. The span of the photovoltaic power generation and mechanized operation space unit can be set to be no less than 30 meters, the net height no less than 4.5 meters, and the spacing between the middle columns 9-12 meters. By creating a "mechanized operation space," large-scale mechanized operations are realized for the first time in the field of photovoltaic desertification control, making large-scale, high-efficiency sand leveling, grass checkerboard laying, sowing, and harvesting a reality, greatly reducing labor costs and improving the speed and scale of governance. In addition, the high net height provides a superior light and ventilation environment for the growth of diverse plants, intelligent sprinkler irrigation ensures precise maintenance, and mechanized operations support the transition from desertification control to modern agriculture, forming a sustainable and profitable comprehensive industrial model.

[0016] In addition, when the sprinkler irrigation system receives irrigation instructions, the fertilizer controller can precisely adjust the fertilizer ratio in the fertilizer addition tank, and the delivery pump delivers water and fertilizer. The electric diversion valve can adjust and select the sprinkler or drip irrigation mode. Finally, the water and fertilizer are sprayed through the sprinkler heads on the longitudinal branch pipe to achieve full coverage. The controller can integrate the scheduling function of surface mechanical equipment to achieve the best configuration of light-water coordinated mechanized operation and intelligent irrigation. It also deeply integrates environmental perception, intelligent decision-making, precise execution and mechanical scheduling, realizing the automated and intelligent operation of the entire system, and achieving a qualitative leap in management efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a photovoltaic desertification control system combining large-span, high-clearance sprinkler irrigation and mechanized operations according to an embodiment of the present invention. Figure 2 This is a schematic diagram of the structure of the sprinkler irrigation mechanism and the cloud platform control mechanism in the photovoltaic desertification control system that combines large-span, high-clearance sprinkler irrigation with mechanized operations, according to an embodiment of the present invention. Figure 3 This is a block diagram illustrating the control principle of a photovoltaic desertification control system combining large-span, high-clearance sprinkler irrigation and mechanized operations, according to an embodiment of the present invention.

[0018] In the picture: 1. Photovoltaic power generation and mechanized operation space unit; 101. Support side column; 102. Support stay cable; 103. Support stay pile; 104. Support intermediate column; 105. Support middle beam; 106. Support component cable; 107. Support lower layer cable; 108. Support wind-resistant truss; 109. Photovoltaic module; 110. Middle column clamp; 111. Support hanging ring; 2. Monitoring facility; 201. Soil sensor array; 202. Meteorological sensor array; 203. Data cable; 3. Sprinkler irrigation mechanism; 301. Fertilizer controller; 302. Water supply tank; 303. Fertilizer addition tank; 304. Transfer pump; 305. Main water supply pipe; 306. Main water and fertilizer pipe; 307. Horizontal main pipe; 308. Vertical branch pipe; 309. Horizontal branch pipe; 310. Longitudinal branch pipe; 311. Sprinkler head; 312. Electric diversion valve; 4. Cloud platform control mechanism; 401. Central controller; 402. Communication module; 403. Cloud server. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figure 1 and Figure 2 The present invention provides a photovoltaic desertification control system with a large span and high clearance, combining sprinkler irrigation and mechanized operation, including a photovoltaic power generation and mechanized operation space unit 1, a monitoring mechanism 2, a sprinkler irrigation mechanism 3, and a cloud platform control mechanism 4.

[0021] Among them, such as Figure 1 As shown, the photovoltaic power generation and mechanized operation space unit 1 includes multiple support side columns 101 and multiple support middle columns 104. The top of each support side column 101 and support middle column 104 is equipped with two support component cables 106 and one support lower layer cable 107. The outer walls of each pair of support side columns 101 and support middle columns 104 in the same horizontal direction are fixedly connected with support middle beams 105. Each support side column (101) is fixedly connected with at least two support cable stays (102). Several photovoltaic modules 109 are installed on the support component cables 106. Support wind-resistant trusses 108 are fixedly connected to the support component cables 106 and support lower layer cables 107. The support wind-resistant trusses 108 adopt a truss structure design and are fixedly connected between the support component cables 106 and support lower layer cables 107 to form a three-dimensional support system, which greatly enhances the wind resistance and overall rigidity of the support cable body.

[0022] The photovoltaic power generation and mechanized operation space unit 1 serves as the core support structure. It is reinforced by sequentially installing the support side columns 101, the support middle columns 104, and the support middle beams 105, and by the support component cables 106, the support lower layer cables 107, and the support wind-resistant trusses 108. The support inclined piles 103 and the support inclined cables 102 on one side of the support side columns 101 ensure stability. The span of the photovoltaic power generation and mechanized operation space unit 1 can be set at no less than 30 meters, the net height is no less than 4.5 meters, and the spacing between the middle columns is 9-12 meters. The large span and high height of the photovoltaic power generation and mechanized operation space unit 1 can not only provide open space for mechanized operations below.

[0023] Furthermore, the end of the support component cable 106 penetrates the top of the support side column 101. A support inclined pile 103 is provided on one side of the support side column 101. One end of the support inclined cable 102 is fixedly connected to the top of the support inclined pile 103. The support inclined cable 102 is formed by extending the support component cable 106 and is fixed at one end to the support inclined pile 103, forming an inclined tension support structure. This structure can effectively share the lateral load borne by the support side column 101, preventing the side column from tilting or falling due to excessive force on one side, thus improving the overall stability of the photovoltaic support. The support inclined pile 103 extends deep into the ground, providing a firm anchor point to ensure that the inclined cable can continuously provide stable tension.

[0024] In an embodiment, such as Figure 2 and Figure 3 As shown, the sprinkler irrigation mechanism 3 is installed on the photovoltaic power generation and mechanized operation space unit 1. The sprinkler irrigation mechanism 3 includes a water supply tank 302, a fertilizer addition tank 303, and a delivery pump 304. The water supply tank 302 and the fertilizer addition tank 303 are connected through a water supply main pipe 305. The fertilizer addition tank 303 is connected to the delivery pump 304 through a water-fertilizer main pipe 306. The outlet of the delivery pump 304 is connected to a horizontal main pipe 307. Each support column 104 has a vertical branch pipe 308 on its outer wall. Multiple vertical branch pipes One end of the bottom of 308 is connected to the horizontal main pipe 307. A horizontal branch pipe 309 is provided on one side of the support beam 105. The top ends of multiple vertical branch pipes 308 are connected to the horizontal branch pipe 309. Multiple longitudinal branch pipes 310 are connected to the horizontal branch pipe 309 at equal intervals. Several sprinkler heads 311 are provided on the outer wall of the longitudinal branch pipe 310 at equal intervals. An electric diversion valve 312 is installed at the bottom of each vertical branch pipe 308. The fertilizer addition tank 303 is electrically connected to the fertilizer controller 301.

[0025] The sprinkler irrigation mechanism 3 receives execution instructions from the central controller 401 and the communication module 402 via the fertilizer controller 301. When receiving an irrigation instruction, the fertilizer controller 301 can precisely control the fertilizer ratio in the fertilizer addition tank 303. The water source from the water supply pool 302 is combined through the water supply main 305 and the water-fertilizer main 306, and then transported by the delivery pump 304 through pipelines such as the horizontal main 307, vertical branch pipe 308, horizontal branch pipe 309, and longitudinal branch pipe 310. The electric diversion valve 312 can independently control the on / off state and flow rate of each vertical branch pipe 308, select the sprinkler or drip irrigation mode, realize zoned and timed sprinkler irrigation, avoid water and fertilizer waste, and finally achieve full coverage spraying through the sprinkler head 311 on the longitudinal branch pipe 310. The sprinkler irrigation mechanism 3 relies on the columns and central beams of the photovoltaic power generation and mechanized operation space unit 1, without the need to build additional sprinkler irrigation supports, saving costs and not affecting the stability of the supports.

[0026] Furthermore, the longitudinal branch pipe 310 is fixed to the bottom of the lower cable 107 of the support by several bracket hanging rings 111. The sprinkler head 311 is a rotating sprinkler head. The bracket hanging rings 111 firmly fix the longitudinal branch pipe 310 to the bottom of the lower cable 107 of the support. The sprinkler pipeline can be conveniently laid out by relying on the photovoltaic support, without the need to build an additional pipeline support structure. When the rotating sprinkler head 311 is working, it can rotate 360° to spray. Compared with the fixed sprinkler head, it can greatly expand the spray range of a single spray.

[0027] Specifically, the vertical branch pipe 308 is fixed to the intermediate column 104 of the support through the central column clamp 110. After the vertical branch pipe 308 passes through the central column clamp 110, the central column clamp 110 fits tightly against the outer wall of the intermediate column 104 of the support and is fastened with bolts, which can firmly fix the vertical branch pipe 308 to the column.

[0028] like Figure 2 and Figure 3 As shown, the monitoring mechanism 2 is installed at the bottom of the photovoltaic power generation and mechanized operation space unit 1 and is used to collect soil and meteorological data. The cloud platform control mechanism 4 includes a central controller 401 and a cloud server 403. The central controller 401 integrates a communication module 402, which is connected to the cloud server 403. The central controller 401 is electrically connected to the fertilizer controller 301, the electric diversion valve 312, and the delivery pump 304. The monitoring mechanism 2 includes a soil sensor group 201 and a meteorological sensor group 202. Both the soil sensor group 201 and the meteorological sensor group 202 are connected to the central controller 401. The cloud platform control mechanism 4 is used to collect the monitoring data of the monitoring mechanism 2 and control the operation status of the sprinkler irrigation mechanism 3.

[0029] Reference Figure 2Monitoring agency 2 is responsible for environmental data collection. Soil sensor group 201 is buried in the planting area under the board to collect soil moisture and fertility data. Meteorological sensor group 202 collects meteorological data. All monitoring data is transmitted to cloud platform control agency 4 through data cable 203. The central controller 401 of cloud platform control agency 4 receives the monitoring data, combines preset strategies and crop growth models to analyze and determine whether the soil is short of water or fertility. It then generates control commands and synchronizes them to cloud server 403 and user terminal through communication module 402.

[0030] Specifically, both the soil sensor group 201 and the meteorological sensor group 202 are connected to data cables 203, one end of which is connected to the signal receiving end of the central controller 401.

[0031] The soil, water and fertilizer monitoring sensors in the soil sensor group 201 are buried in the planting area under the board, the meteorological sensor group 202 is installed on the support column, and the sensor cables are connected to the central controller 401 in the control room located at the edge of the station.

[0032] The central controller 401 is used to collect monitoring data from the monitoring agency 2, control the operation of the sprinkler irrigation agency 3, and identify the status of mechanical operations. This enables precise water and fertilizer management throughout the entire crop life cycle, optimized scheduling and management of mechanical operations such as sowing, plant protection, harvesting, and land leveling, and transmits the data to the user terminal so that users can check the on-site situation in real time. The sprinkler irrigation mechanism 3 receives execution instructions from the central controller 401 and the communication module 402 through the fertilizer controller 301. When the irrigation instruction is received, the fertilizer controller 301 can accurately control the fertilizer ratio of the fertilizer addition tank 303. The water source of the water supply pool 302 is combined through the water supply main pipe 305 and the water and fertilizer main pipe 306, and is transported by the delivery pump 304 through the horizontal main pipe 307, vertical branch pipe 308, horizontal branch pipe 309 and longitudinal branch pipe 310. The electric diversion valve 312 can control and select the sprinkler irrigation or drip irrigation mode. Finally, the water and fertilizer are sprayed in full coverage through the sprinkler head 311 on the longitudinal branch pipe 310.

[0033] Meanwhile, the central controller 401 can integrate the scheduling function of surface machinery and equipment, coordinate the time and path of sprinkler irrigation operations and ground mechanized equipment, avoid conflicts, and achieve the best configuration of light-water coordinated mechanized operations and intelligent irrigation.

[0034] According to a specific embodiment of this application, the working steps of this solution are summarized as follows: In this invention, the photovoltaic power generation and mechanized operation space unit 1 is the core support structure. After site leveling and foundation construction, the support side columns 101, the support middle columns 104, and the support middle beams 105 are installed in sequence, and reinforced by the support component cables 106, the support lower layer cables 107, and the support wind-resistant truss 108. The support inclined piles 103 and the support inclined cables 102 on one side of the support side columns 101 ensure stability. The span of the photovoltaic power generation and mechanized operation space unit 1 is not less than 30 meters, the net height is not less than 4.5 meters, and the spacing between the middle columns is 9-12 meters. The large span and high height of the photovoltaic power generation and mechanized operation space unit 1 not only provide open space for mechanized operations below, but also have the effect of supporting the installation of lightweight photovoltaic modules 109, avoiding long-term solar radiation to the soil surface, so that the photovoltaic modules 109 can generate photovoltaic power while reducing soil moisture evaporation.

[0035] The cloud platform control unit 4 receives soil, water, fertilizer, and meteorological parameters from the soil sensor group 201, a monitoring module with crop spectrum inversion and field monitoring, a central controller 401, a communication module 402, and a user terminal.

[0036] The system according to this application also includes a machinery scheduling and management subsystem that is communicatively connected to the controller, for planning and monitoring the operation path and operation time of large machinery in the mechanized operation space, and coordinating with the operation plan of the sprinkler unit.

[0037] In one embodiment, when the soil moisture value detected by the cloud platform control mechanism (2) is lower than the preset moisture threshold, or the soil fertility value detected is lower than the preset fertility threshold, and within a predetermined time window during which there is no mechanical operation in the photovoltaic power generation and mechanized operation space unit set by the mechanical scheduling and management subsystem, the cloud platform control mechanism generates a control command to start sprinkler irrigation.

[0038] All parts not described in this invention are the same as or can be implemented using existing technology. Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A photovoltaic desertification control system combining large-span, high-clearance sprinkler irrigation and mechanized operations, characterized in that: It includes a photovoltaic power generation and mechanized operation space unit (1), a cloud platform control mechanism (2), and a sprinkler irrigation mechanism (3). The photovoltaic power generation and mechanized operation space unit (1) includes a cable-structured flexible photovoltaic support, photovoltaic modules and power transmission cables. The cable-structured flexible photovoltaic support includes multiple support side columns (101), multiple support middle columns (104) and multiple support stay cables (102). The top of each support side column (101) and support middle column (104) is equipped with two support component cables (106) and one support lower layer cable (107). The outer walls of each pair of support side columns (101) and support middle columns (104) in the same horizontal direction are fixedly connected with support beams (105). Each support side column (101) is fixedly connected with at least two support stay cables (102), thus forming a support plane for installing photovoltaic modules. The cloud platform control mechanism (2) includes a monitoring mechanism and a controller. The soil monitoring module, water monitoring module and fertilizer monitoring module of the monitoring mechanism are buried in the planting area under the photovoltaic module. The meteorological parameter monitoring module, crop spectrum inversion monitoring module and field monitoring module of the monitoring mechanism are installed on the side column (1) and the middle column (104) of the support to collect the corresponding monitoring data. The controller controls the operation status of the sprinkler irrigation mechanism (3) according to the monitoring data. The sprinkler irrigation mechanism (3) is installed on the photovoltaic power generation and mechanized operation space unit (1) and is used to configure water and fertilizer and transport water and fertilizer along the layout direction of the lower layer cable (107) of the support for sprinkler irrigation.

2. The photovoltaic desertification control system combining large-span, high-clearance sprinkler irrigation and mechanized operation as described in claim 1, is characterized in that... The sprinkler irrigation mechanism (3) includes a water supply tank (302), a fertilizer addition tank (303), and a delivery pump (304). The water supply tank (302) and the fertilizer addition tank (303) are connected through a main water supply pipe (305). The fertilizer addition tank (303) is connected to the delivery pump (304) through a water-fertilizer main pipe (306). The outlet of the delivery pump (304) is connected to a horizontal main pipe (307). Each of the intermediate columns (104) of the support is provided with a vertical branch pipe (308) on its outer wall. One end of the bottom of the multiple vertical branch pipes (308) is connected to the horizontal main pipe (307). The support is connected to the main pipe (307). A horizontal branch pipe (309) is provided on one side of the beam (105) of the support. The top end of the multiple vertical branch pipes (308) is connected to the horizontal branch pipe (309). Multiple longitudinal branch pipes (310) are equidistantly arranged on the horizontal branch pipe (309). Several sprinkler heads (311) are equidistantly arranged on the outer wall of the longitudinal branch pipe (310). An electric diversion valve (312) is installed at the bottom of each vertical branch pipe (308). The fertilizer addition tank (303) is electrically connected to a fertilizer controller (301).

3. The photovoltaic desertification control system combining large-span, high-clearance sprinkler irrigation and mechanized operation according to claim 2, characterized in that, The water supply tank (302) and fertilizer addition tank (303) configure the water-fertilizer mixture according to the controller instructions of the cloud platform control mechanism (2), and the spray head arranged along the lower side of the support cable (107) by the delivery pump and delivery pipeline performs sprinkler or drip irrigation according to the instructions received by the electric diversion valve.

4. The photovoltaic desertification control system combining large-span, high-clearance sprinkler irrigation and mechanized operation as described in claim 1, characterized in that, The end of the support component cable (106) passes through the top of the support side column (101). A support inclined pile (103) is provided on one side of the support side column (101). One end of the support inclined cable (102) is fixedly connected to the top of the support inclined pile (103). A support wind-resistant truss (108) is fixedly connected to the support component cable (106) and the support lower layer cable (107).

5. The photovoltaic desertification control system combining large-span, high-clearance sprinkler irrigation and mechanized operation according to claim 1, characterized in that, The total span of the photovoltaic power generation and mechanized operation space unit (1) is not less than 30m, the total net height is not less than 4.5m, and the row spacing between every two intermediate columns (104) of the bracket is 9-12m.

6. The photovoltaic desertification control system combining large-span, high-clearance sprinkler irrigation and mechanized operation according to claim 1, characterized in that, A number of photovoltaic modules (109) are installed on the support assembly cable (106) at equal intervals.

7. The photovoltaic desertification control system combining large-span, high-clearance sprinkler irrigation and mechanized operation according to claim 2, characterized in that, The longitudinal branch pipe (310) is fixed to the bottom of the lower cable (107) of the support by several bracket hanging rings (111), and the sprinkler head (311) is a rotary sprinkler head.

8. The photovoltaic desertification control system combining large-span, high-clearance sprinkler irrigation and mechanized operation according to claim 2, characterized in that, The vertical branch pipe (308) is fixed to the middle column (104) of the support by the middle column clamp (110).

9. The photovoltaic desertification control system combining large-span, high-clearance sprinkler irrigation and mechanized operation according to claim 1, characterized in that, The system also includes a machinery scheduling and management subsystem that is communicatively connected to the controller, used to plan and monitor the working paths and working times of large machinery in the mechanized work space, and to coordinate with the work plan of the sprinkler unit.

10. The photovoltaic desertification control system combining large-span, high-clearance sprinkler irrigation and mechanized operation according to claim 9, characterized in that, When the soil moisture value detected by the cloud platform control mechanism (2) is lower than the preset moisture threshold, or the soil fertility value detected is lower than the preset fertility threshold, and within the predetermined time window when there is no mechanical operation in the photovoltaic power generation and mechanized operation space unit set by the mechanical scheduling and management subsystem, the cloud platform control mechanism (2) generates a control command to start sprinkler irrigation.

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