Method for ecological management of Tenggri desert by using photovoltaic power and pasture

Abstract

The invention provides a method for carrying out ecological management on the Tenggri desert through photovoltaic and pasture. The method comprises the steps that S1, a photovoltaic panel intensive water irrigation system is built; s2, land leveling and improvement, wherein land under the photovoltaic panel intensive water irrigation system is leveled, fertilized and improved; s3, planting: sowing Tenggri desert indigenous plant ecological bags under a photovoltaic panel intensive water irrigation system; the Tenggri desert indigenous plant ecological bag comprises the following plants: caragana microphylla, salix psammophila, sophora alopecuroide, artemisia selengensis, elymus dahuricus, agriophyllum squarrosum, astragalus adsurgens, kochia scoparia and mongolian wheatgrass; a photovoltaic panel intensive water irrigation system and special forage grass are combined to comprehensively control desertification, power generation and ecological management complement each other, multiple ecological benefits of land improvement, sand stabilization and land reclamation, wind and sand suppression and vegetation restoration are achieved while power generation is performed, high-quality forage grass can be provided, animal husbandry development is promoted, and economic and ecological benefits are improved. In addition, compared with a traditional irrigation mode, water can be saved by 30-70% through drip irrigation.

Description

Technical Field

[0001] The present invention relates to the field of desert management, and in particular to a method for ecological management of the Tengger Desert using photovoltaics and forage grass. Background Art

[0002] The Tengger Desert has a unique geographical location, located in the southeast of Alxa League, Inner Mongolia Autonomous Region, between the Helan Mountains and the Yabulai Mountains, with a total desert area of ​​about 36,700 square kilometers. The terrain of the Tengger Desert descends slowly from southeast to northwest, with an altitude of 1,200-1,400 meters. The climate is dry and wind and sand activities are frequent. Sand dunes, lake basin grasslands, mountain shallow hills and plains are distributed in an interlaced manner, of which sand dunes account for 71% of the area.

[0003] Current Tengger Desert governance measures include enclosure and protection, artificial afforestation, sand-fixing nets and other methods. However, these methods often have the defects of large engineering workload, high investment and poor governance effect. In addition, the Tengger Desert has also adopted photovoltaic power generation projects. The application of photovoltaic panels in desert areas can not only utilize abundant solar energy resources, but also change the surface microenvironment to a certain extent. However, the current combination of photovoltaics and desert ecological governance is not close enough. Most of them simply lay photovoltaic panels in the desert, and fail to give full play to the comprehensive benefits of photovoltaics in ecological governance. For example, the land under photovoltaic panels is often idle and has not been effectively utilized. The cleaning and maintenance of photovoltaic panels cannot be effectively solved. The water resources generated during the cleaning and maintenance process have not been reasonably recycled, resulting in a waste of water resources. Summary of the invention

[0004] In order to solve the above technical problems, the present invention proposes a method for ecological management of the Tengger Desert using photovoltaics and forage grass, in order to provide an invention with more reference significance for the management of the Tengger Desert, as follows: A method for ecological management of the Tengger Desert using photovoltaics and forage grass comprises the following steps: S1. Construction of intensive water-using irrigation system for photovoltaic panels; S2. Land leveling and improvement: leveling and fertilizing the land under the photovoltaic panel intensive water irrigation system; S3, planting: sowing the Tengger Desert native plant ecological package under the photovoltaic panel intensive water irrigation system; the plants in the Tengger Desert native plant ecological package are: Caragana korshinskii, Salix psammophila, Sophora alopecuroides, Artemisia ordosica, Elymus dahliae, Sago asiatica, Astragalus astragali, Kochia scoparia, and Wheatgrass; The seeding rate of the plants in the ecological package is 6 - 10 kg / mu. By mass ratio, the planting ratio is: Caragana korshinskii: Salix psammophila: Sophora alopecuroides: Artemisia ordosica: Elymus dahuricus: Agriophyllum squarrosum: Astragalus adsurgens: Kochia prostrata: Agropyron mongolicum = 1 - 1.5: 1 - 1.5: 0.2 - 0.5: 0.8 - 1: 0.5 - 1: 0.5 - 1: 0.5 - 1: 1 - 1.5: 0.5 - 1; S4. Maintenance: After watering with the intensive water - saving irrigation system of photovoltaic panels, straw is laid for covering and fertilizer conservation. Manual watering can also be carried out here. After the seedlings germinate and grow to about 1 - 2 cm in height, the straw can be removed; As a further solution of the present invention, Caragana korshinskii, Salix psammophila, Sophora alopecuroides, Artemisia ordosica, Elymus dahuricus, Agriophyllum squarrosum, Astragalus adsurgens, Kochia prostrata, and Agropyron mongolicum are evenly mixed to form a native plant ecological package for the Tengger Desert. Sowing is carried out from early June to mid - August, the sowing depth is 4 - 5 cm, and the row spacing is 30 - 50 cm.

[0005] As a further solution of the present invention, the intensive water - saving irrigation system of photovoltaic panels includes support poles fixed at the four corners, photovoltaic panels, a cleaning device, and a recycling irrigation device. The horizontal spacing of the support poles is 5 - 7 m, and the vertical spacing is 3 - 5 m; the height of the rear support poles is 1.0 - 2.0 m, and the height of the front support poles is 0.5 - 1.5 m; The photovoltaic panels are arranged in an inclined shape. The cleaning device is arranged at the inclined upper end of the photovoltaic panels. The recycling end of the recycling irrigation device is communicated with the cleaning end of the cleaning device. The cleaning device includes a fixed cleaning pipe and a movable cleaning pipe. The recycling irrigation device includes a water storage pipe, a recycling pipeline unit, and an irrigation pipeline unit.

[0006] As a further solution of the present invention, the fixed cleaning pipe and the movable cleaning pipe are distributed in a staggered vertical shape. The fixed cleaning pipe is parallel to the upper edge of the inclined photovoltaic panels. The movable cleaning pipe moves horizontally along the upper edge of the inclined photovoltaic panels, and the movable cleaning pipe is parallel to the inclined plate body of the photovoltaic panels; fixed cleaning nozzles are arranged on the pipe body of the fixed cleaning pipe, and movable cleaning nozzles are arranged on the pipe body of the movable cleaning pipe.

[0007] As a further solution of the present invention, the recycling pipeline unit of the recycling irrigation device includes a recycling pipe and an anti - flush filter. The recycling pipe is connected between the anti - flush filter and the bottom end of the photovoltaic panels. A return pipe is connected between the anti - flush filter and the water storage pipe. The irrigation pipeline unit of the recycling irrigation device includes a sprinkler pipe and a drip irrigation plate. The sprinkler pipe is laid on the ground in the installation area of the photovoltaic panels, and the drip irrigation plate is connected below the photovoltaic panels; An outer frame plate is arranged around the photovoltaic panel. A photovoltaic panel support frame is connected to the inner frame area of the outer frame plate, and the photovoltaic panel is placed on the photovoltaic panel support frame in the inner frame area of the outer frame plate. A drain groove in the shape of a "C" is formed on the plate body of the outer frame plate, and the drain groove is located on both sides and the bottom of the photovoltaic panel. The drain groove at the bottom of the photovoltaic panel is communicated with a recovery pipe; one side wall of the drain groove close to the side of the photovoltaic panel is set as a water guiding inclined surface, and a filter screen is placed on the drain groove.

[0008] As a further scheme of the present invention, the cleaning device further includes a U-shaped frame, a threaded rotating rod and a slider. A forward water turbine and a reverse water turbine are respectively arranged on both sides of the U-shaped frame. The rotating water wheels of the forward water turbine and the reverse water turbine are coaxially connected to both ends of the threaded rotating rod respectively; The U-shaped frame is fixedly connected to the inclined upper edge of the outer frame plate. Rotating bearings are embedded at both ends of the U-shaped frame. The two ends of the threaded rotating rod penetrate through the rotating bearings. A slider is threadedly connected to the rod body of the threaded rotating rod between the two ends of the U-shaped frame. The inclined upper end of the movable cleaning pipe is fixedly connected to the slider.

[0009] As a further scheme of the present invention, the output end of the forward water turbine is communicated with the fixed cleaning pipe. The output end of the reverse water turbine is communicated with a connecting hose, and the other end of the connecting hose is communicated with the movable cleaning pipe. The input end of the forward water turbine is communicated with a fixed water supply pipe. The input end of the reverse water turbine is communicated with a movable water supply pipe. A three-way pipe is communicated between the fixed water supply pipe and the movable water supply pipe. The three-way pipe is communicated with the irrigation pipeline unit of the recovery irrigation device. An electromagnetic three-way valve is installed on the pipe body of the three-way pipe. Limit switches are connected to the inner side walls at both ends of the U-shaped frame. The electromagnetic three-way valve and the limit switches are both in signal transmission connection with an external terminal.

[0010] As a further scheme of the present invention, the spray irrigation pipe is arranged in a grid shape, and a plurality of spray nozzles are formed on the pipe body of the spray irrigation pipe; The welded parts of the vertical and horizontal pipe bodies of the spray irrigation pipe are welded with fixed sleeves. The opening ends of the fixed sleeves are vertically upward. A plurality of ground nails are connected to the bottom of the pipe body of the spray irrigation pipe, and the ground nails are fixedly inserted into the soil layer. Support rods are vertically connected to the four corners of the outer frame plate, and the bottom ends of the support rods are fixedly inserted into the fixed sleeves.

[0011] As a further solution of the present invention, the irrigation pipeline unit of the recycling irrigation device further includes a cleaning water supply pipe, a sprinkler irrigation water supply pipe, a backwashing water delivery pipe, and a drip irrigation water supply pipe. The cleaning water supply pipe is connected between the water storage pipe and the three-way pipe. The cleaning water supply pipe is arranged on one side of the water storage pipe and is connected to the bottom end of the water storage pipe. The water storage pipe is buried in the soil under the photovoltaic panel. A sprinkler irrigation water supply pipe is connected between the cleaning water supply pipe and the sprinkler pipe. The backwashing water delivery pipe is connected between the water storage pipe and the backwashing filter. The backwashing water delivery pipe is arranged on the other side of the water storage pipe and is connected to the bottom end of the water storage pipe. A return pipe is also connected to the pipe body of the backwashing water delivery pipe, and the other end of the return pipe is connected to the upper end of the water storage pipe. The drip irrigation water supply pipe is connected between the backwashing filter and the drip irrigation plate. The four corners of the drip irrigation plate are fixedly connected to the rod bodies of the support rods. A drip irrigation cavity is formed in the drip irrigation plate. A plurality of drip irrigation holes are formed in the lower plate surface of the drip irrigation plate, and the drip irrigation holes are communicated with the drip irrigation cavity. A drip irrigation water pump is installed on the pipe body of the drip irrigation water supply pipe, and a sprinkler irrigation water pump is installed on the pipe body of the cleaning water supply pipe. The connection part of the sprinkler irrigation water supply pipe and the cleaning water supply pipe is located on one side of the water outlet end of the sprinkler irrigation water pump. Both the drip irrigation water pump and the sprinkler irrigation water pump are electrically connected to an external power supply.

[0012] As a further solution of the present invention, electromagnetic valves are installed on the pipe bodies of the cleaning water supply pipe and the sprinkler irrigation water supply pipe, and the electromagnetic valves are in signal transmission connection with an external control terminal; A filter plate and an arc-shaped baffle are arranged in the backwashing filter. The filter plate is horizontally connected in the backwashing filter. A plurality of arc-shaped baffles are provided. The arc-shaped baffles are connected to the inner wall of the backwashing filter and are located directly above the filter plate. The recycling pipe is connected to the top end of the backwashing filter. The backwashing water delivery pipe is connected to the bottom end of the backwashing filter. The drip irrigation water supply pipe is connected to the side wall of the backwashing filter, and the connection position of the drip irrigation water supply pipe on the side wall of the backwashing filter is above the installation position of the filter plate.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In the present invention, Caragana korshinskii, Sophora alopecuroides, and Astragalus adsurgens are leguminous plants. Leguminous plants can increase soil fertility by nitrogen fixation; Agropyron mongolicum is mixed with leguminous forage to improve the carbon sequestration ability of the grassland, increase community biodiversity and the survival rate of wild vegetation; the main root of Artemisia ordosica deeply penetrates the sandy land and is an expert in fixing sand and preventing wind; Kochia prostrata has strong adaptability and stress resistance and can grow in arid, desert and other harsh environments, and can prevent wind and fix sand and maintain soil and water; the root system of Salix psammophila is developed, can firmly hold the sandy soil and fix the sandy land, and its deep root system can also increase the groundwater level and improve the utilization efficiency of groundwater resources.

[0014] 2. The intensive water-saving irrigation system for photovoltaic panels of the present invention can, while generating electricity, reduce the surface temperature through its shading effect, decrease the stress on plants and evaporation amount caused by high summer temperatures, and create a comfortable environment for vegetation. Moreover, the vegetation's sand fixation can reduce the abrasion and sand accumulation problems of the photovoltaic panels, thereby improving the power generation efficiency.

[0015] 3. The intensive water-saving irrigation system for photovoltaic panels of the present invention can filter the recycled clean water or rainwater through its backflush filter and then transport it to the water storage pipe, and the water in the water storage pipe can irrigate the plants around and below the photovoltaic panels, realizing the intensive utilization of water resources, saving water while improving the survival rate of vegetation.

[0016] 4. The ecological package of native plants in the Tengger Desert provided by the present invention selects native plants that are drought-tolerant and salt-tolerant. Through scientific proportioning, a multi-layer root system structure combining deep roots and shallow roots is formed, and the sand fixation efficiency can be increased by more than 40%.

[0017] 5. The intensive water-saving irrigation system for photovoltaic panels provided by the present invention can, while generating electricity using solar energy, play the roles of resisting wind and sand, blocking sunlight, reducing the surface temperature, and decreasing the evaporation amount. It can also store rainwater for watering plants, which is beneficial to the growth and restoration of vegetation. After the plants grow, they can weaken the erosion of the wind and sand on the photovoltaic system and reduce dust on the photovoltaic panels. The combination of the intensive water-saving irrigation system for photovoltaic panels and the ecological package of native plants in the Tengger Desert is beneficial for photovoltaic power generation and can also improve the ecological environment.

[0018] 6. The new comprehensive sand control model combining the intensive water-saving irrigation system for photovoltaic panels provided by the present invention and the ecological package of native plants in the Tengger Desert makes up for the deficiencies between power generation and ecological governance. While generating electricity, it can achieve multiple ecological benefits such as land improvement, sand fixation and land reclamation, wind and sand control, and vegetation restoration. It can also provide high-quality forage grass, promote the development of animal husbandry, and improve economic and ecological benefits. In addition, the use of technologies such as photovoltaic spraying, water storage tanks, and water diversion troughs for drip irrigation can significantly reduce the water consumption. Compared with traditional irrigation methods, drip irrigation can save 30% - 70% of water.

[0019] 7. The intensive water-saving irrigation system for photovoltaic panels of the present invention is provided with photovoltaic panels, a cleaning device, and a recycling irrigation device. The cleaning device includes a fixed cleaning pipe and a movable cleaning pipe, and the recycling irrigation device includes a water storage pipe, a recycling pipeline unit, and an irrigation pipeline unit. The upper surface of the photovoltaic panels can be cleaned through the cleaning device to clean dust and other sundries on the surface of the photovoltaic panels, avoiding the sundries causing blockage on the surface of the photovoltaic panels, that is, avoiding the reduction of the photovoltaic power generation efficiency of the photovoltaic panels.

[0020] 8. The intensive water-saving irrigation system for photovoltaic panels of the present invention is provided with a recycling irrigation device that collects clean water into a water storage pipe through a recycling pipeline unit and conveys the water in the water storage pipe to the plants planted around the photovoltaic panels through an irrigation pipeline unit for irrigation, so as to provide better watering conditions for the plants planted around the installation position of the photovoltaic panels. It can clean the photovoltaic panels and further collect and reuse clean water and rainwater, greatly improving the utilization efficiency of water resources. It can be applied to water-scarce areas such as deserts. While generating electricity through the photovoltaic panels, it can achieve the treatment of the surrounding environment, making solar power generation and ecological treatment complement each other's weaknesses, and realizing multiple ecological benefits such as land improvement, sand fixation and land reclamation, wind and sand control, and vegetation restoration while generating electricity.

[0021] 9. In the intensive water-saving irrigation system for photovoltaic panels of the present invention, the fixed cleaning pipe and the movable cleaning pipe are distributed in a staggered and perpendicular manner. Fixed cleaning nozzles are provided on the pipe body of the fixed cleaning pipe, and movable cleaning nozzles are provided on the pipe body of the movable cleaning pipe. When cleaning the photovoltaic panels, the surface of the photovoltaic panels can be comprehensively flushed and cleaned through the movement of the movable cleaning pipe. The caked and hardened surface dust can also be moistened and softened, and then rinsed from the inclined upper end of the photovoltaic panel through the fixed cleaning pipe, so that the moistened and softened surface dust flows along the rinsing water flow to the bottom end of the photovoltaic panel. By repeatedly using the movable cleaning pipe to moisten and soften the surface dust and using the inclined surface rinsing of the fixed cleaning pipe, the photovoltaic panels can be thoroughly cleaned.

[0022] 10. The recycling pipeline unit of the intensive water-saving irrigation system for photovoltaic panels of the present invention includes a recycling pipe and a backwash filter. The recycling pipe is connected between the backwash filter and the bottom end of the photovoltaic panel. A return pipe is connected between the backwash filter and the water storage pipe. The irrigation pipeline unit of the recycling irrigation device includes a sprinkler pipe and a drip irrigation plate. The sprinkler pipe is laid on the ground in the installation area of the photovoltaic panels, and the drip irrigation plate is connected below the photovoltaic panels. The recycled clean water or rainwater can be filtered through the backwash filter and then conveyed to the water storage pipe, and the water in the water storage pipe can be used to sprinkle the plants around the photovoltaic panels through the sprinkler pipe and can drip irrigate the plants directly below the photovoltaic panels through the drip irrigation plate, that is, it can collect clean water or rainwater, and at the same time can sprinkle the water more evenly around and below the photovoltaic panels to achieve precise irrigation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the outer frame plate structure of the present invention; Figure 3 is of the present invention Figure 2 structural schematic diagram at position A in Figure 4Schematic structural diagram of the cleaning device of the present invention; Figure 5 Schematic structural diagram of the connection structure of the movable cleaning pipe of the present invention; Figure 6 Schematic structural diagram of the connection structure between the threaded rotating rod and the forward water turbine of the present invention; Figure 7 Schematic structural diagram of the connection structure between the threaded rotating rod and the reverse water turbine of the present invention; Figure 8 Schematic structural diagram of the cleaning state of the fixed cleaning pipe of the present invention; Figure 9 Schematic structural diagram of the cleaning state of the movable cleaning pipe of the present invention; Figure 10 Schematic structural diagram of the connection structure between the recycling irrigation device and the sprinkler pipe of the present invention; Figure 11 Front view structural diagram of the recycling irrigation device of the present invention; Figure 12 Schematic cross-sectional structure diagram of the backflush filter of the present invention; Figure 13 Schematic cross-sectional structure diagram of the drip irrigation plate of the present invention.

[0024] In the figure: 1. Photovoltaic panel; 2. Outer frame plate; 21. Support rod; 22. Filter screen; 23. Photovoltaic panel support frame; 24. Drainage groove; 25. Water guide slope; 3. Cleaning device; 31. Fixed cleaning pipe; 32. Movable cleaning pipe; 33. U-shaped frame; 34. Threaded rotating rod; 35. Slide block; 36. Limit switch; 37. Rotating bearing; 38. Forward water turbine; 39. Reverse water turbine; 310. Connecting hose; 311. Fixed water supply pipe; 312. Movable water supply pipe; 313. Three-way pipe; 314. Fixed cleaning nozzle; 315. Movable cleaning nozzle; 316. Electromagnetic three-way valve; 4. Sprinkler pipe; 41. Sprinkler head; 42. Fixed sleeve; 43. Ground nail; 5. Water storage pipe; 51. Cleaning water supply pipe; 52. Sprinkler water supply pipe; 53. Sprinkler water pump; 54. Recovery pipe; 55. Backflush filter; 56. Return pipe; 57. Backflush water delivery pipe; 58. Drip irrigation water supply pipe; 59. Drip irrigation water pump; 510. Filter plate; 511. Arc-shaped baffle; 6. Drip irrigation plate; 61. Drip irrigation cavity; 62. Drip irrigation hole; 7. Solenoid valve. Detailed implementation manners

[0025] Embodiment 1 As Figure 1 、 Figure 4 And Figure 10As shown in the figure, a photovoltaic panel intensive water-saving irrigation system for desert ecological management includes a photovoltaic panel 1, a cleaning device 3, and a recycling irrigation component. The photovoltaic panel 1 is inclined. The cleaning device 3 is arranged at the upper inclined end of the photovoltaic panel 1. The recycling end of the recycling irrigation component is communicated with the cleaning end of the cleaning device 3. The cleaning device 3 includes a fixed cleaning pipe 31 and a movable cleaning pipe 32. The recycling irrigation component includes a water storage pipe 5, a recycling pipeline unit, and an irrigation pipeline unit. The upper surface of the photovoltaic panel 1 can be cleaned by the cleaning device 3 so as to clean dust and other sundries on the surface of the photovoltaic panel 1. It can avoid the blockage caused by sundries on the surface of the photovoltaic panel 1, that is, avoid the reduction of the photovoltaic power generation efficiency of the photovoltaic panel 1. Secondly, the arranged recycling irrigation component collects the water for cleaning into the water storage pipe 5 through the recycling pipeline unit, and conveys the water in the water storage pipe 5 to the planted plants around the photovoltaic panel 1 through the irrigation pipeline unit for irrigation, so as to provide better water application conditions for the planted plants around the installation position of the photovoltaic panel 1. It can realize the cleaning of the photovoltaic panel 1 and further collect and reuse the clean water and rainwater, greatly improving the utilization efficiency of water resources. It can be applied to water-scarce areas such as deserts. While generating electricity through the photovoltaic panel 1, it can also realize the management of the surrounding environment, making the solar power generation and ecological management complement each other's weaknesses. At the same time of generating electricity, it can achieve multiple ecological benefits such as land improvement, sand fixation and land reclamation, wind sand control, and vegetation restoration. It can also provide high-quality forage, promote the development of animal husbandry, and improve the economic and ecological benefits; The fixed cleaning pipe 31 and the movable cleaning pipe 32 are distributed in a misaligned vertical state. The fixed cleaning pipe 31 is parallel to the inclined upper edge of the photovoltaic panel 1. The movable cleaning pipe 32 moves horizontally along the inclined upper edge of the photovoltaic panel 1, and the movable cleaning pipe 32 is parallel to the inclined plate body of the photovoltaic panel 1. Fixed cleaning nozzles 314 are provided on the pipe body of the fixed cleaning pipe 31, and movable cleaning nozzles 315 are provided on the pipe body of the movable cleaning pipe 32. When cleaning the photovoltaic panel 1, the movable cleaning pipe 32 can move to comprehensively flush and clean the surface of the photovoltaic panel 1. The caked and hardened surface dust can also be moistened and softened, and then flushed from the inclined upper end of the photovoltaic panel 1 through the fixed cleaning pipe 31, so that the moistened and softened surface dust flows to the bottom end of the photovoltaic panel 1 along the flushing water flow. By repeatedly using the movable cleaning pipe 32 to moisten and soften the surface dust and using the inclined flushing of the fixed cleaning pipe 31, the photovoltaic panel 1 can be thoroughly cleaned. The recovery pipeline unit of the recycling and irrigation assembly includes a recovery pipe 54 and a backwash filter 55. The recovery pipe 54 is connected between the backwash filter 55 and the bottom end of the photovoltaic panel 1. A return pipe 56 is connected between the backwash filter 55 and the water storage pipe 5. The irrigation pipeline unit of the recycling and irrigation assembly includes a sprinkler pipe 4 and a drip irrigation plate 6. The sprinkler pipe 4 is laid on the ground in the installation area of the photovoltaic panel 1, and the drip irrigation plate 6 is connected below the photovoltaic panel 1. The backwash filter 55 can filter the recycled cleaning water or rainwater and then transport it to the water storage pipe 5. The water in the water storage pipe 5 can irrigate the plants planted around the photovoltaic panel 1 through the sprinkler pipe 4 and can drip-irrigate the plants planted directly below the photovoltaic panel 1 through the drip irrigation plate 6, that is, the collection of cleaning water or rainwater can be realized, and at the same time, the water can be more evenly sprayed on the plants planted around the photovoltaic panel 1 to achieve precise irrigation.

[0026] Embodiment 2 Improved on the basis of Embodiment 1: As Figures 1 to 3 shown, an outer frame plate 2 is arranged around the photovoltaic panel 1. A photovoltaic panel support frame 23 is connected in the inner frame area of the outer frame plate 2, and the photovoltaic panel 1 is placed on the photovoltaic panel support frame 23 in the inner frame area of the outer frame plate 2. A drain groove 24 in a "C" shape is provided on the plate body of the outer frame plate 2, and the drain groove 24 is located on both sides and the bottom edge of the photovoltaic panel 1. The drain groove 24 at the bottom edge of the photovoltaic panel 1 is communicated with the recovery pipe 54, so that the photovoltaic panel 1 and the outer frame plate 2 can be combined together, and then the cleaning water or rainwater can flow downward along the inclined surface of the photovoltaic panel 1 to be collected by the drain groove 24. When the movable cleaning pipe 32 comprehensively flushes and cleans the photovoltaic panel 1, the cleaning water sprayed by the movable cleaning pipe 32 when it moves to both sides can also be collected by the drain groove 24 and can converge to the bottom edge of the drain groove 24 for recovery, realizing the maximum collection of the cleaning water or rainwater on the surface of the photovoltaic panel 1.

[0027] Further, one side wall of the drainage groove 24 close to the side of the photovoltaic panel 1 is provided with a water guiding inclined surface 25, and a filter screen 22 is clamped on the drainage groove 24. By providing the filter screen 22, the inner space of the drainage groove 24 can be shielded, so as to avoid larger sundries such as leaves or weeds from falling into the groove and affecting the normal drainage of the drainage groove 24. At the same time, due to the provision of the water guiding inclined surface 25, when the filter screen 22 is clamped at the opening part at the upper end of the drainage groove 24, there will be a certain gap between the filter screen 22 and the water guiding inclined surface 25, so that the cleaning water or rainwater can flow into the groove along the gap.

[0028] As Figure 1 , Figures 4 to 9 shown, the cleaning device 3 further includes a U-shaped frame 33, a threaded rotating rod 34 and a slider 35. The U-shaped frame 33 is fixedly connected to the inclined upper edge of the outer frame plate 2. Rotating bearings 37 are embedded at both ends of the U-shaped frame 33. The two ends of the threaded rotating rod 34 penetrate through the rotating bearings 37. A slider 35 is threadedly connected to the rod body of the threaded rotating rod 34 between the two ends of the U-shaped frame 33. The inclined upper end of the movable cleaning pipe 32 is fixedly connected to the slider 35. By rotating the threaded rotating rod 34, the slider 35 can be moved, so as to drive the movable cleaning pipe 32 to horizontally move along the inclined upper edge of the photovoltaic panel 1, so as to comprehensively flush and clean the upper surface of the photovoltaic panel 1.

[0029] Further, a forward water turbine 38 and a reverse water turbine 39 are respectively arranged on both sides of the U-shaped frame 33. The rotating water wheels of the forward water turbine 38 and the reverse water turbine 39 are coaxially connected to both ends of the threaded rotating rod 34. The output end of the forward water turbine 38 is communicated with the fixed cleaning pipe 31. The output end of the reverse water turbine 39 is communicated with a connecting hose 310, and the other end of the connecting hose 310 is communicated with the movable cleaning pipe 32. The input end of the forward water turbine 38 is communicated with a fixed water supply pipe 311. The input end of the reverse water turbine 39 is communicated with a movable water supply pipe 312. A tee pipe 313 is communicated between the fixed water supply pipe 311 and the movable water supply pipe 312, and the tee pipe 313 is communicated with the irrigation pipeline unit of the recycling irrigation assembly. An electromagnetic three-way valve 316 is installed on the pipe body of the tee pipe 313. The inner side walls of both ends of the U-shaped frame 33 are connected with limit switches 36. Both the electromagnetic three-way valve 316 and the limit switches 36 are in signal transmission connection with an external terminal. In the initial state, water can be supplied to the fixed water supply pipe 311 or the movable water supply pipe 312 through any open passage of the electromagnetic three-way valve 316. If water is first supplied to the fixed water supply pipe 311, when the water is conveyed into the fixed water supply pipe 311, it can drive the rotating water wheel in the forward water turbine 38 to rotate forward, and then drive the threaded rotating rod 34 to rotate forward, so as to drive the slider 35 to move in one direction. When moving to the end point, the slider 35 will touch the limit switch 36 at this end point. At this time, the electromagnetic three-way valve 316 will be controlled to switch the passage to supply water to the movable water supply pipe 312. When the water is conveyed into the movable cleaning pipe 32, it can drive the rotating water wheel in the reverse water turbine 39 to rotate reversely, and then drive the threaded rotating rod 34 to rotate reversely, so as to drive the slider 35 to move in the other direction. And while the movable cleaning pipe 32 moves, it can also spray the surface of the photovoltaic panel 1. When moving to the end point, the slider 35 will touch the limit switch 36 at this end point, and the above process can be repeated. Through the intermittent cleaning and flushing of the fixed cleaning pipe 31 and the movable cleaning pipe 32, the photovoltaic panel 1 can be thoroughly cleaned.

[0030] As Figure 1 and Figure 10 shown, the sprinkler pipe 4 is arranged in a cross shape, and a plurality of sprinkler nozzles 41 are opened on the pipe body of the sprinkler pipe 4. The surrounding plants of the photovoltaic panel 1 can be evenly sprinkled through the plurality of sprinkler nozzles 41 communicated with the sprinkler pipe 4, so as to expand the sprinkling range, provide the water required for plant growth, and promote the growth of plants.

[0031] Further, a fixed sleeve 42 is welded at the connecting part of the vertical and horizontal pipe bodies of the sprinkler pipe 4. The open end of the fixed sleeve 42 faces vertically upward. A plurality of ground nails 43 are connected to the bottom of the pipe body of the sprinkler pipe 4, and the ground nails 43 are fixedly inserted into the soil layer. Support rods 21 are vertically connected to the four corners of the outer frame plate 2, and the bottom ends of the support rods 21 are fixedly inserted into the fixed sleeve 42. By using the cross-shaped sprinkler pipe 4 as the bottom support structure for supporting the photovoltaic panel 1, on the one hand, while the sprinkler pipe 4 can play the role of sprinkler irrigation, the stability of the installation of the photovoltaic panel 1 can be improved due to the relatively large area supported by the sprinkler pipe 4. On the other hand, if the photovoltaic panel 1 is removed, the sprinkler pipe 4 can also be left in place to continue playing the role of sprinkler irrigation, realizing disassembly and reuse.

[0032] As Figure 1 , Figure 11 , Figure 12 and Figure 13 shown, the irrigation pipeline unit of the recycling irrigation assembly further includes a cleaning water supply pipe 51, a sprinkler water supply pipe 52, a backwash water delivery pipe 57 and a drip irrigation water supply pipe 58. The cleaning water supply pipe 51 is connected between the water storage pipe 5 and the tee pipe 313. The cleaning water supply pipe 51 is arranged on one side of the water storage pipe 5 and is connected to the bottom end of the water storage pipe 5. The water storage pipe 5 is buried in the soil under the photovoltaic panel 1. A sprinkler water supply pipe 52 is connected between the cleaning water supply pipe 51 and the sprinkler pipe 4. The backwash water delivery pipe 57 is connected between the water storage pipe 5 and the backwash filter 55. The backwash water delivery pipe 57 is arranged on the other side of the water storage pipe 5 and is connected to the bottom end of the water storage pipe 5. A return pipe 56 is also connected to the pipe body of the backwash water delivery pipe 57, and the other end of the return pipe 56 is connected to the upper end of the water storage pipe 5. The drip irrigation water supply pipe 58 is connected between the backwash filter 55 and the drip irrigation plate 6. The four corners of the drip irrigation plate 6 are fixedly connected to the rod bodies of the support rods 21. A drip irrigation cavity 61 is formed in the drip irrigation plate 6. A plurality of drip irrigation holes 62 are formed in the lower plate surface of the drip irrigation plate 6, and the drip irrigation holes 62 are communicated with the drip irrigation cavity 61. A drip irrigation water pump 59 is installed on the pipe body of the drip irrigation water supply pipe 58, and a sprinkler water pump 53 is installed on the pipe body of the cleaning water supply pipe 51. The connecting part of the sprinkler water supply pipe 52 and the cleaning water supply pipe 51 is located on the side of the water outlet end of the sprinkler water pump 53. Both the drip irrigation water pump 59 and the sprinkler water pump 53 are electrically connected to an external power supply. The water in the water storage pipe 5 can be pumped out by the sprinkler water pump 53 and delivered to the fixed cleaning pipe 31 or the movable cleaning pipe 32 through the cleaning water supply pipe 51 to clean the surface of the photovoltaic panel 1, and the water can also be delivered to the sprinkler pipe 4 through the sprinkler water supply pipe 52 to irrigate the plants planted around the photovoltaic panel 1. The water in the water storage pipe 5 can also be pumped out by the drip irrigation water pump 59, delivered to the backwash filter 55 through the backwash water delivery pipe 57, then delivered to the drip irrigation cavity 61 of the drip irrigation plate 6 through the drip irrigation water supply pipe 58, and dripped through the drip irrigation holes 62, that is, the plants planted directly below the photovoltaic panel 1 can be drip-irrigated.

[0033] Further, solenoid valves 7 are installed on the pipe bodies of the cleaning water supply pipe 51 and the sprinkler irrigation water supply pipe 52, and the solenoid valves 7 are in signal transmission connection with an external control terminal, and can respectively control the opening and closing of the cleaning water supply pipe 51 or the sprinkler irrigation water supply pipe 52, so that the cleaning function or the sprinkler irrigation function or both can be selected according to specific usage requirements.

[0034] Further, a filter plate 510 and an arc-shaped baffle 511 are arranged in the backwash filter 55. The filter plate 510 is horizontally connected in the backwash filter 55. A plurality of arc-shaped baffles 511 are provided. The arc-shaped baffles 511 are connected to the inner wall of the backwash filter 55, and the arc-shaped baffles 511 are located directly above the filter plate 510. The recovery pipe 54 communicates with the top of the backwash filter 55, the backwash water supply pipe 57 communicates with the bottom of the backwash filter 55, and the drip irrigation water supply pipe 58 communicates with the side wall of the backwash filter 55. The connection position of the drip irrigation water supply pipe 58 on the side wall of the backwash filter 55 is above the installation position of the filter plate 510. When cleaning water or rainwater is recovered, the water entering the backwash filter 55 through the recovery pipe 54 can be filtered by the filter plate 510 and then collected in the water storage pipe 5. When the drip irrigation water pump 59 pumps the water in the water storage pipe 5 and transports it to the backwash filter 55 through the backwash water supply pipe 57, the water flow flows upward from the bottom of the backwash filter 55, and the upward flowing water flow can be turned over under the action of the arc-shaped baffle 511 to ensure that the impurities on the filter plate 510 are completely stirred up, so that the impurities on the filter plate 510 can be taken out and discharged by dripping through the drip irrigation holes 62, that is, the filter plate 510 can be backwashed while drip-irrigating the planted plants, so as to prevent impurities from accumulating on the filter plate 510.

[0035] Working principle: First, the upper surface of the photovoltaic panel 1 is cleaned by the cleaning device 3. The movement of the movable cleaning pipe 32 can comprehensively wash and clean the surface of the photovoltaic panel 1, and the caked and hardened surface dust can also be moistened and softened. Then, it is rinsed from the inclined upper end of the photovoltaic panel 1 through the fixed cleaning pipe 31, so that the moistened and softened surface dust flows to the bottom end of the photovoltaic panel 1 along the rinsing water flow. By repeatedly using the movable cleaning pipe 32 to moisten and soften the surface dust and using the inclined surface rinsing of the fixed cleaning pipe 31, thorough cleaning of the photovoltaic panel 1 can be achieved, avoiding the blockage caused by sundries on the surface of the photovoltaic panel 1, that is, avoiding the reduction of the photovoltaic power generation efficiency of the photovoltaic panel 1. Secondly, a sprinkler pipe 4 is laid on the ground in the installation area of the photovoltaic panel 1, and a drip irrigation plate 6 is connected below the photovoltaic panel 1. The recycled cleaning water or rainwater can be filtered by the backwash filter 55 and then transported to the water storage pipe 5. The water in the water storage pipe 5 can be used to irrigate the plants planted around the photovoltaic panel 1 through the sprinkler pipe 4, and can drip-irrigate the plants planted directly below the photovoltaic panel 1 through the drip irrigation plate 6. That is, the collection of cleaning water or rainwater can be realized, and at the same time, the water can be more evenly sprayed on the plants planted around the photovoltaic panel 1, realizing precise irrigation. It can be used in water-scarce areas such as deserts. While generating electricity through the photovoltaic panel 1, it can also realize the treatment of the surrounding environment, making the solar power generation and ecological governance complement each other's shortcomings, and realizing multiple ecological benefits such as land improvement, sand fixation and land reclamation, wind and sand control, and vegetation restoration while generating electricity. It can also provide high-quality forage grass, promote the development of animal husbandry, and improve economic and ecological benefits.

[0036] Example 3 A method for ecological governance of the Tengger Desert using photovoltaic and forage grass includes the following steps: S1. Construction of the photovoltaic panel intensive water use irrigation system described in Example 2; S2. Land leveling and improvement: Level and fertilize the land under the photovoltaic panel intensive water use irrigation system; S3. Planting: Sow the ecological package of native plants in the Tengger Desert under the photovoltaic panel intensive water use irrigation system. The plants in the ecological package of native plants in the Tengger Desert are: Caragana korshinskii, Salix psammophila, Sophora alopecuroides, Artemisia ordosica, Elymus dahuricus, Agriophyllum squarrosum, Astragalus adsurgens, Kochia prostrata, Agropyron mongolicum; The seeding rate of the plants in the ecological package is 6 kg / mu, and the planting ratio is Caragana korshinskii: Salix psammophila: Sophora alopecuroides: Artemisia ordosica: Elymus dahuricus: Agriophyllum squarrosum: Astragalus adsurgens: Kochia prostrata: Agropyron mongolicum = 1:1:0.2:0.8:0.5:0.5:0.5:1:0.5; S4. Maintenance: Water using the photovoltaic panel intensive water use irrigation system, and lay straw for covering and fertilizer preservation.

[0037] The described method for ecological management of the Tengger Desert using photovoltaic and forage grass. The photovoltaic panel intensive water irrigation system includes support poles fixed at the four corners. The horizontal spacing between the support poles is 5 meters, and the vertical spacing is 3 meters. The height of the support poles at the back is 1.0 meter, and the height of the support poles at the front is 0.5 meter.

[0038] The described method for ecological management of the Tengger Desert using photovoltaic and forage grass. In step S2, when fertilizing and improving the soil, the fertilizer is organic fertilizer. The organic fertilizer is the organic fertilizer disclosed in Patent No. ZL202110539706.5.

[0039] The described method for ecological management of the Tengger Desert using photovoltaic and forage grass is to evenly mix Caragana korshinskii, Salix psammophila, Sophora alopecuroides, Artemisia ordosica, Elymus dahuricus, Agriophyllum squarrosum, Astragalus adsurgens, Kochia prostrata, and Agropyron mongolicum to form an ecological package of native plants in the Tengger Desert, and sowing is carried out from early June to mid-August. The sowing depth is 4 cm, and the row spacing is 30 cm.

[0040] Example 4 A method for ecological management of the Tengger Desert using photovoltaic and forage grass includes the following steps: S1. Construction of the photovoltaic panel intensive water irrigation system described in Example 2; S2. Land leveling and improvement: Level the land under the photovoltaic panel intensive water irrigation system and fertilize and improve it; S3. Planting: Sow the ecological package of native plants in the Tengger Desert under the photovoltaic panel intensive water irrigation system. The plants in the ecological package of native plants in the Tengger Desert are: Caragana korshinskii, Salix psammophila, Sophora alopecuroides, Artemisia ordosica, Elymus dahuricus, Agriophyllum squarrosum, Astragalus adsurgens, Kochia prostrata, and Agropyron mongolicum; The seeding rate of the plants in the ecological package is 10 kg / mu, and the planting ratio is: Caragana korshinskii:Salix psammophila:Sophora alopecuroides:Artemisia ordosica:Elymus dahuricus:Agriophyllum squarrosum:Astragalus adsurgens:Kochia prostrata:Agropyron mongolicum = 1.5:1.5:0.5:1:1:1:1:1.5:1; S4. Maintenance: Water using the photovoltaic panel intensive water irrigation system and lay straw for covering to preserve fertilizer.

[0041] Furthermore, for the described method for ecological management of the Tengger Desert using photovoltaic and forage grass, the photovoltaic panel intensive water irrigation system includes support poles fixed at the four corners. The horizontal spacing between the support poles is 7 meters, and the vertical spacing is 5 meters. The height of the support poles at the back is 2.0 meters, and the height of the support poles at the front is 1.5 meters.

[0042] Furthermore, for the described method for ecological management of the Tengger Desert using photovoltaic and forage grass, in step S2, when fertilizing and improving the soil, the fertilizer is organic fertilizer. The organic fertilizer is the organic fertilizer disclosed in Patent No. ZL202110539706.5.

[0043] Furthermore, for the method of using photovoltaics and forage grass for ecological management of the Tengger Desert, Caragana korshinskii, Salix psammophila, Sophora alopecuroides, Artemisia ordosica, Elymus dahuricus, Agriophyllum squarrosum, Astragalus adsurgens, Kochia prostrata, and Agropyron mongolicum are evenly mixed to form an ecological package of native plants in the Tengger Desert, which is sown from early June to mid-August, with a sowing depth of 5 cm and a row spacing of 50 cm.

[0044] Example 5 A method of using photovoltaics and forage grass for ecological management of the Tengger Desert includes the following steps: S1. Construction of the photovoltaic panel intensive water irrigation system described in Example 2; S2. Land leveling and improvement: Level and fertilize and improve the land under the photovoltaic panel intensive water irrigation system; S3. Planting: Sow the ecological package of native plants in the Tengger Desert under the photovoltaic panel intensive water irrigation system. The plants in the ecological package of native plants in the Tengger Desert are: Caragana korshinskii, Salix psammophila, Sophora alopecuroides, Artemisia ordosica, Elymus dahuricus, Agriophyllum squarrosum, Astragalus adsurgens, Kochia prostrata, and Agropyron mongolicum; The seeding rate of the plants in the ecological package is 8 kg / mu, and the planting ratio is Caragana korshinskii:Salix psammophila:Sophora alopecuroides:Artemisia ordosica:Elymus dahuricus:Agriophyllum squarrosum:Astragalus adsurgens:Kochia prostrata:Agropyron mongolicum = 1.3:1.3:0.4:0.9:0.7:0.7:0.7:1.3:0.7; S4. Maintenance: Water using the photovoltaic panel intensive water irrigation system, and lay straw for covering and fertilizer conservation.

[0045] Furthermore, for the method of using photovoltaics and forage grass for ecological management of the Tengger Desert, the photovoltaic panel intensive water irrigation system includes support poles fixed at the four corners. The horizontal spacing of the support poles is 6 m, and the vertical spacing is 4 m; the height of the support poles at the rear is 1.5 m, and the height of the support poles at the front is 1.0 m.

[0046] Furthermore, for the method of using photovoltaics and forage grass for ecological management of the Tengger Desert, in step S2, when fertilizing and improving, the fertilizer is organic fertilizer; the organic fertilizer is the organic fertilizer disclosed in the patent number ZL202110539706.5.

[0047] Furthermore, for the method of using photovoltaics and forage grass for ecological management of the Tengger Desert, Caragana korshinskii, Salix psammophila, Sophora alopecuroides, Artemisia ordosica, Elymus dahuricus, Agriophyllum squarrosum, Astragalus adsurgens, Kochia prostrata, and Agropyron mongolicum are evenly mixed to form an ecological package of native plants in the Tengger Desert, which is sown from early June to mid-August, with a sowing depth of 4.5 cm and a row spacing of 40 cm.

[0048] Comparative Example 1 Different from Example 4: The plants in the ecological package of native plants in the Tengger Desert, namely Caragana korshinskii, Sophora alopecuroides, and Astragalus adsurgens, are specifically: Salix psammophila, Artemisia ordosica, Elymus dahuricus, Agriophyllum squarrosum, Kochia prostrata, and Agropyron mongolicum.

[0049] Comparative Example 2 Different from Example 4: The shrub and semi-shrub Caragana korshinskii and Salix psammophila are missing in the ecological package of native plants in the Tengger Desert, specifically: Sophora alopecuroides, Artemisia ordosica, Elymus dahuricus, Agriophyllum squarrosum, Astragalus adsurgens, Kochia prostrata, and Agropyron mongolicum; the ratio remains unchanged.

[0050] Comparative Example 3 Different from Example 4: Caragana korshinskii, Salix psammophila, and Kochia prostrata are missing in the ecological package of native plants in the Tengger Desert, specifically: Sophora alopecuroides, Artemisia ordosica, Elymus dahuricus, Agriophyllum squarrosum, Astragalus adsurgens, and Agropyron mongolicum; the ratio remains unchanged.

[0051] Comparative Example 4 Different from Example 4: The seed ratio of the ecological package of native plants in the Tengger Desert has changed. The specific ratio is: Caragana korshinskii: Salix psammophila: Sophora alopecuroides: Artemisia ordosica: Elymus dahuricus: Agriophyllum squarrosum: Astragalus adsurgens: Kochia prostrata: Agropyron mongolicum = 0.7: 1.5: 0.1: 0.5: 0.2: 1: 1: 0.2: 1.

[0052] Comparative Example 5 Different from Example 4: The seed ratio of the ecological package of native plants in the Tengger Desert has changed. The specific ratio is: Caragana korshinskii: Salix psammophila: Sophora alopecuroides: Artemisia ordosica: Elymus dahuricus: Agriophyllum squarrosum: Astragalus adsurgens: Kochia prostrata: Agropyron mongolicum = 0.5: 1: 0.4: 1: 0.8: 0.5: 1.5: 0.8: 1.

[0053] Experimental Part A plot of 1 square kilometer was selected and evenly divided into 7 blocks. Under the same environment, the plots were planted according to the methods of Examples 3 - 5 and Comparative Examples 1 - 5 respectively. After 1 year of planting, the survival rate and coverage rate of each plot were measured. The specific results are shown in Table 1 below.

[0054] Table 1

[0055] It can be seen from the above experimental data that by adopting the technical scheme of the present invention, the highest survival rate can reach 73.1%, and the highest coverage rate can reach 28.2%. This shows that the technical scheme of the present invention has obvious advantages in promoting plant growth and ecological restoration. In Comparative Examples 1 - 3, due to the lack of leguminous plants or shrub plants, and in Comparative Examples 4 and 5, the plant ratio is unreasonable, which will ultimately affect the survival rate and coverage rate of the grass seeds, indicating that the defect of plant configuration has a more sensitive impact on the surface coverage than the survival rate.

Claims

1. A method for ecological management of the Tengger Desert using photovoltaics and forage, characterized in that: The steps include: S1. Construction of intensive water-using irrigation system for photovoltaic panels; S2. Land leveling and improvement: leveling and fertilizing the land under the photovoltaic panel intensive water irrigation system; S3, planting: sowing the Tengger Desert native plant ecological package under the photovoltaic panel intensive water irrigation system; the plants in the Tengger Desert native plant ecological package are: Caragana korshinskii, Salix psammophila, Sophora alopecuroides, Artemisia ordosica, Elymus dahliae, Sago asiatica, Astragalus astragali, Kochia scoparia, and Wheatgrass; The sowing amount of the plants in the ecological bag is 6-10 kg / mu, and the planting ratio is 1-1.5: 1-1.5: 0.2-0.5: 0.8-1: 0.5-1: 0.5-1: 0.5-1: 1-1.5: 0.5-1; S4. Maintenance: After watering using the photovoltaic panel intensive water irrigation system, lay straw for covering and fertilizer conservation.

2. The method for ecological management of Tengger Desert using photovoltaic and forage grass as claimed in claim 1, characterized in that: Evenly mix Caragana korshinskii, Salix psammophila, Sophora alopecuroides, Artemisia ordosica, Elymus dactylifera, Smilax glabra, Astragalus membranaceus, Kochia scoparia, and Wheatgrass to form an ecological package of native plants for the Tengger Desert. Sow them from early June to mid-August with a sowing depth of 4-5cm and a row spacing of 30-50cm.

3. The method for ecological management of Tengger Desert using photovoltaic and forage grass as claimed in claim 1, characterized in that: The photovoltaic panel intensive water irrigation system comprises support poles (21) fixed at four corners, photovoltaic panels (1), a cleaning device (3) and a recycling irrigation device, wherein the horizontal spacing of the support poles (21) is 5-7 meters and the vertical spacing is 3-5 meters; the rear support poles (21) are 1.0-2.0 meters high, and the front support poles (21) are 0.5-1.5 meters high; The photovoltaic panel (1) is arranged in an inclined shape, the cleaning device (3) is arranged at the inclined upper end of the photovoltaic panel (1), the recovery end of the recovery irrigation device is connected to the cleaning end of the cleaning device (3), and the cleaning device (3) comprises a fixed cleaning pipe (31) and a movable cleaning pipe (32); The recycling irrigation device comprises a water storage pipe (5), a recycling pipeline unit and an irrigation pipeline unit.

4. The method for ecological management of Tengger Desert using photovoltaic and forage grass according to claim 3 is characterized in that: The fixed cleaning tube (31) and the movable cleaning tube (32) are arranged in a staggered vertical shape; the fixed cleaning tube (31) is parallel to the inclined upper edge of the photovoltaic panel (1); the movable cleaning tube (32) moves horizontally along the inclined upper edge of the photovoltaic panel (1); and the movable cleaning tube (32) is parallel to the inclined body of the photovoltaic panel (1); a fixed cleaning nozzle (314) is provided on the body of the fixed cleaning tube (31); and a movable cleaning nozzle (315) is provided on the body of the movable cleaning tube (32).

5. The method for ecological management of Tengger Desert using photovoltaic and forage grass according to claim 3 is characterized in that: The recovery pipeline unit of the recovery irrigation device comprises a recovery pipe (54) and a backwash filter (55); the recovery pipe (54) is connected between the backwash filter (55) and the bottom end of the photovoltaic panel (1); and a return pipe (56) is connected between the backwash filter (55) and the water storage pipe (5); The irrigation pipeline unit of the recycling irrigation device comprises a sprinkler pipe (4) and a drip irrigation plate (6), wherein the sprinkler pipe (4) is laid on the ground in the installation area of ​​the photovoltaic panel (1), and the drip irrigation plate (6) is connected below the photovoltaic panel (1); An outer frame plate (2) is provided around the photovoltaic panel (1). A photovoltaic panel support frame (23) is connected to the inner frame area of the outer frame plate (2), and the photovoltaic panel (1) is placed on the photovoltaic panel support frame (23) in the inner frame area of the outer frame plate (2). A drain groove (24) in a C shape is formed on the plate body of the outer frame plate (2), and the drain groove (24) is located on both sides and the bottom of the photovoltaic panel (1). The drain groove (24) at the bottom of the photovoltaic panel (1) is communicated with a recovery pipe (54); one side wall of the drain groove (24) close to the side of the photovoltaic panel (1) is provided with a water guiding inclined surface (25), and a filter screen (22) is placed on the drain groove (24).

6. The method for ecological management of Tengger Desert using photovoltaic and forage grass according to claim 5 is characterized in that: The cleaning device (3) further includes a U-shaped frame (33), a threaded rotating rod (34) and a slider (35). A forward water turbine (38) and a reverse water turbine (39) are respectively arranged on both sides of the U-shaped frame (33). The rotating water wheels of the forward water turbine (38) and the reverse water turbine (39) are coaxially connected to both ends of the threaded rotating rod (34). The U-shaped frame (33) is fixedly connected to the inclined upper edge of the outer frame plate (2). Rotating bearings (37) are embedded at both ends of the U-shaped frame (33). The rod bodies of both ends of the threaded rotating rod (34) penetrate through the rotating bearings (37). A slider (35) is threadedly connected to the rod body of the threaded rotating rod (34) between both ends of the U-shaped frame (33). The inclined upper end of the movable cleaning pipe (32) is fixedly connected to the slider (35).

7. The method for ecological management of Tengger Desert using photovoltaic and forage grass according to claim 6 is characterized in that: The output end of the forward water turbine (38) is communicated with the fixed cleaning pipe (31). The output end of the reverse water turbine (39) is communicated with a connecting hose (310), and the other end of the connecting hose (310) is communicated with the movable cleaning pipe (32). The input end of the forward water turbine (38) is communicated with a fixed water supply pipe (311). The input end of the reverse water turbine (39) is communicated with a movable water supply pipe (312). A tee pipe (313) is communicated between the fixed water supply pipe (311) and the movable water supply pipe (312), and the tee pipe (313) is communicated with the irrigation pipeline unit of the recovery irrigation device. An electromagnetic three-way valve (316) is installed on the pipe body of the tee pipe (313). Limit switches (36) are connected to the inner side walls at both ends of the U-shaped frame (33). Both the electromagnetic three-way valve (316) and the limit switches (36) are in signal transmission connection with an external terminal.

8. The method for ecological management of Tengger Desert using photovoltaic and forage grass according to claim 7 is characterized in that: The sprinkler pipe (4) is arranged in a grid shape, and a plurality of sprinkler nozzles (41) are formed on the pipe body of the sprinkler pipe (4). Fixing sleeves (42) are welded at the connecting parts of the vertical and horizontal pipe bodies of the sprinkler pipe (4). The opening ends of the fixing sleeves (42) face vertically upward. A plurality of ground nails (43) are connected to the bottom of the pipe body of the sprinkler pipe (4), and the ground nails (43) are fixedly inserted into the soil layer. Support rods (21) are vertically connected to the four corners of the outer frame plate (2), and the bottom ends of the support rods (21) are fixedly inserted into the fixing sleeves (42).

9. The method for ecological management of Tengger Desert using photovoltaic and forage grass according to claim 8, characterized in that: The irrigation pipeline unit of the recycling irrigation device further comprises a clean water supply pipe (51), a sprinkler irrigation water supply pipe (52), a backwash water delivery pipe (57) and a drip irrigation water supply pipe (58); the clean water supply pipe (51) is connected between the water storage pipe (5) and the three-way pipe (313); the clean water supply pipe (51) is arranged on one side of the water storage pipe (5), and the clean water supply pipe (51) is connected to the bottom end of the water storage pipe (5); the water storage pipe (5) The invention is buried in the soil below the photovoltaic panel (1); a sprinkler water supply pipe (52) is connected between the cleaning water supply pipe (51) and the sprinkler pipe (4); the recoil water delivery pipe (57) is connected between the water storage pipe (5) and the recoil filter (55); the recoil water delivery pipe (57) is arranged on the other side of the water storage pipe (5), and the recoil water delivery pipe (57) is connected to the bottom end of the water storage pipe (5); and the recoil water delivery pipe (57) is on the pipe body of the recoil water delivery pipe (57). The drip irrigation plate (6) is connected to the backwash filter (55) and the drip irrigation plate (6). The four corners of the drip irrigation plate (6) are fixedly connected to the rod body of the support rod (21). The drip irrigation plate (6) is provided with a drip irrigation cavity (61). The lower plate surface of the drip irrigation plate (6) is provided with a plurality of drip irrigation holes (62). The drip irrigation hole (62) is connected to the drip irrigation cavity (61); a drip irrigation water pump (59) is installed on the pipe body of the drip irrigation water supply pipe (58); a sprinkler irrigation water pump (53) is installed on the pipe body of the clean water supply pipe (51); the connecting portion between the sprinkler irrigation water supply pipe (52) and the clean water supply pipe (51) is located on the water outlet side of the sprinkler irrigation water pump (53); and the drip irrigation water pump (59) and the sprinkler irrigation water pump (53) are both electrically connected to an external power supply.

10. The method for ecological management of Tengger Desert using photovoltaic and forage grass according to claim 9, characterized in that: The cleaning water supply pipe (51) and the sprinkler water supply pipe (52) are both provided with a solenoid valve (7) installed on their pipe bodies, and the solenoid valve (7) is connected to the external control terminal for signal transmission; The backwash filter (55) is provided with a filter plate (510) and an arc-shaped baffle (511). The filter plate (510) is horizontally connected to the backwash filter (55). A plurality of arc-shaped baffles (511) are provided. The arc-shaped baffles (511) are connected to the inner wall of the backwash filter (55), and the arc-shaped baffles (511) are located directly above the filter plate (510). The recovery pipe (54) is connected to the top end of the backwash filter (55). The backwash water delivery pipe (57) is connected to the bottom end of the backwash filter (55). The drip irrigation water supply pipe (58) is connected to the side wall of the backwash filter (55), and the connection position of the drip irrigation water supply pipe (58) on the side wall of the backwash filter (55) is located above the installation position of the filter plate (510).

Images