A greenhouse strawberry A-frame cultivation system

Abstract

The present application relates to the technical field of cultivation equipment, in particular to a greenhouse strawberry A-frame cultivation system, which comprises an A-frame, and a plurality of groups of planting frames arranged on both sides of the A-frame, the lower surface of each planting frame is provided with a plurality of groups of penetrating air holes, the inner side of each planting frame is provided with a horizontally arranged liquid storage shell, and a plurality of groups of return springs are fixedly connected between the lower surface of the liquid storage shell and the inner side of the planting frame; through the return springs, the liquid storage shell and the piston column, the air holes are automatically closed during irrigation to prevent water leakage; after irrigation is completed, the return springs drive the piston column to separate from the air holes, the air circulation at the bottom is restored, soil oxygen deficiency and root decay are avoided, the traditional planting frame bottom is closed, which leads to insufficient ventilation, the present application realizes intelligent switching of closing during irrigation and ventilation during non-irrigation through mechanical linkage, the demand for ventilation and water retention can be balanced without manual intervention, and the root activity of strawberries is significantly improved.

Description

Technical Field

[0001] This invention relates to the field of cultivation equipment technology, specifically to a greenhouse strawberry A-frame cultivation system. Background Technology

[0002] In the field of modern agricultural facility cultivation, the A-frame vertical cultivation system is widely used in greenhouse strawberry cultivation because it can make full use of space, improve land utilization, and facilitate agricultural operations.

[0003] In existing A-frame cultivation systems, most planting frames feature a closed bottom design without ventilation holes. While this design facilitates centralized irrigation and prevents water leakage to some extent, it has several drawbacks. First, the closed bottom severely hinders air circulation within the planting frame, making it difficult for the air around the soil and plant roots to renew effectively. This can lead to soil hypoxia, affecting strawberry root respiration and nutrient absorption, thus inhibiting plant growth. Second, the lack of ventilation holes makes it difficult to effectively control humidity within the planting frame. After irrigation or in high-humidity environments, excess water cannot drain in time, easily leading to waterlogging and causing problems such as strawberry root rot and the proliferation of pests and diseases. Furthermore, the closed bottom is detrimental to soil microbial activity, affecting the maintenance and improvement of soil fertility, and reducing strawberry yield and quality. Therefore, this paper proposes an A-frame cultivation system for greenhouse strawberries that can effectively solve the ventilation problem while ensuring irrigation effectiveness, thus meeting the needs of modern, high-efficiency agricultural production. Summary of the Invention

[0004] To address the problems in existing technologies, this invention provides a greenhouse strawberry A-frame cultivation system that effectively solves ventilation issues while ensuring irrigation efficiency.

[0005] The technical solution adopted by this invention to solve its technical problem is a greenhouse strawberry A-frame cultivation system, including an A-frame and several planting frames respectively set on both sides of the A-frame. The lower surface of the planting frame is provided with several sets of through-hole ventilation holes. The inner side of the planting frame is provided with a horizontally arranged liquid storage shell. Several sets of return springs are fixedly connected between the lower surface of the liquid storage shell and the inner side of the planting frame. The lower surface of the liquid storage shell is provided with piston columns corresponding to the ventilation holes. The upper surface of the liquid storage shell is provided with several sets of through-hole liquid outlets.

[0006] Specifically, one side of the liquid storage shell is provided with several sets of through slots, and a horizontally arranged sealing plate is slidably connected in the slots. Several sets of connecting holes corresponding to the liquid outlet holes are passed through the sealing plate. The connecting holes and the liquid outlet holes are initially staggered. A compression spring is fixedly connected between one side of the sealing plate and the inner wall of the liquid storage shell. A wedge-shaped compression surface is provided on the side of the sealing plate away from the compression spring. Several sets of compression rods are fixedly connected to the inner side of the planting frame. The upper end of the compression rods is in compression contact with the wedge-shaped compression surface.

[0007] Specifically, several sets of cleaning rods are distributed on the liquid storage shell. The lower surface of the cleaning rod is provided with a slider, and the upper surface of the liquid storage shell is provided with a sliding groove that is slidably connected to the slider. The inner wall of the planting frame protrudes outward to form an arc-shaped groove. The inner side of the planting frame is provided with a connecting groove that communicates with the inside of the arc-shaped groove. A float is provided in the arc-shaped groove. The cleaning rods away from the float are fixedly connected to the outer wall of the liquid storage shell by a first elastic pull rope. A second elastic pull rope is fixedly connected between adjacent cleaning rods. The cleaning rods close to the float are fixedly connected to the float by a rope.

[0008] Specifically, a liquid storage tank is located below the A-frame, with a water pump connected to one side of the tank. An infusion pipe connected to the water pump is installed on the tank. Manifolds are installed on the outside of the planting frame, and each manifold is connected to the inside of the liquid storage tank through several sets of flexible hoses. The infusion pipe is connected to the uppermost manifold.

[0009] Specifically, each side of the planting frame is connected to an overflow pipe, and the lower end of the overflow pipe is connected to the manifold below.

[0010] Specifically, the bottom inner side of the planting frame is equipped with a vertically installed drainage pipe, and the outer side of the drainage pipe is equipped with circumferentially distributed drainage holes. The upper end of the drainage pipe passes through the liquid storage shell and is slidably connected to the liquid storage shell in a sealed manner. The upper end of the drainage pipe is connected to the inside of the liquid storage shell, and the lower end of the drainage pipe passes through the planting frame and is connected to a valve.

[0011] Specifically, the planting frame contains a cultivation frame, and the bottom inner side of the cultivation frame has several sets of bottom holes that communicate with the planting frame.

[0012] Specifically, the lower end face of the piston rod is conical, the piston rod passes through the vent hole and is slidably connected to the vent hole in a sealed manner, the bottom diameter of the piston rod is smaller than the diameter of the vent hole, and the piston rod is detachably connected to the liquid storage shell.

[0013] Specifically, a guide rod perpendicular to the direction of rope movement is connected to the lower inner side of the planting frame. The two ends of the guide rod are fixedly connected to the bottom of the inner side of the planting frame through connectors. The rope passes through the lower part of the guide rod and extends upward to connect with the float.

[0014] Specifically, an anti-siphon check valve is installed at the connection between the infusion tube and the manifold.

[0015] The beneficial effects of this invention are:

[0016] The present invention discloses an A-frame cultivation system for greenhouse strawberries. During irrigation, the system automatically seals the ventilation holes to prevent water leakage through a return spring, a liquid storage shell, and a piston column. After irrigation, the return spring drives the piston column to disengage from the ventilation holes, restoring air circulation at the bottom and preventing soil hypoxia and root rot. Traditional planting frames with sealed bottoms result in insufficient ventilation, while this solution achieves intelligent switching between sealing during irrigation and ventilation during non-irrigation through mechanical linkage. It balances the needs for ventilation and water retention without manual intervention, significantly improving the activity of strawberry roots.

[0017] The present invention discloses a greenhouse strawberry A-frame cultivation system that utilizes water level changes within the planting frame to drive a float. This float, along with ropes and elastic pull ropes, automatically scrapes the upper surface of the liquid storage shell and the liquid outlet holes, removing nutrient solution crystals, impurities, and other contaminants to prevent clogging. The cleaning process relies on water level fluctuations and mechanical linkage, eliminating the need for additional power sources or manual climbing of high-level planting frames. This system is particularly suitable for vertical cultivation, reducing maintenance risks and costs.

[0018] The present invention discloses a greenhouse strawberry A-frame cultivation system, wherein a drainage pipe with drainage holes is provided at the bottom of the planting frame. After irrigation, the valve is opened, and the water in the storage tank is discharged through the drainage pipe. The remaining water in the planting frame is discharged simultaneously through the drainage holes, thus avoiding water accumulation and soaking of the root system. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is an isometric view of the present invention;

[0021] Figure 2 This is a bottom view of the present invention;

[0022] Figure 3 for Figure 1 Enlarged view of region A;

[0023] Figure 4 This is a side view of the present invention;

[0024] Figure 5 This is a schematic cross-sectional view of the planting frame structure of the present invention;

[0025] Figure 6 This is a schematic diagram of the planting frame structure of the present invention;

[0026] Figure 7 for Figure 6 Enlarged view of region B;

[0027] Figure 8 This is a schematic diagram of the cleaning rod connection structure of the present invention;

[0028] Figure 9 This is a schematic cross-sectional view of the liquid storage shell of the present invention;

[0029] In the diagram: 1. A-frame; 2. Planting frame; 3. Ventilation hole; 4. Liquid storage tank; 5. Return spring; 6. Piston column; 7. Liquid outlet; 8. Groove; 9. Sealing plate; 10. Connecting hole; 11. Compression spring; 12. Wedge-shaped compression surface; 13. Compression rod; 14. Cleaning rod; 15. Sliding block; 16. Slide groove; 17. Arc groove; 18. Connecting groove; 19. Float; 20. First elastic pull rope; 21. Second elastic pull rope; 22. Rope; 23. Liquid storage tank; 24. Water pump; 25. Infusion tube; 26. Manifold; 27. Hose; 28. Overflow tube; 29. ​​Drain tube; 30. Drain hole; 31. Valve; 32. Cultivation frame; 33. Bottom hole; 34. Guide rod; 35. Connector. Detailed Implementation

[0030] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0031] In order to effectively solve the ventilation problem while ensuring irrigation effectiveness, as one embodiment of the present invention, such as Figure 1 , Figure 2 , Figure 4 , Figure 7 As shown, the greenhouse strawberry A-frame cultivation system of the present invention includes an A-frame 1 and several planting frames 2 respectively arranged on both sides of the A-frame 1. The lower surface of the planting frame 2 is provided with several sets of through-hole ventilation holes 3. The inner side of the planting frame 2 is provided with a horizontally arranged liquid storage shell 4. Several sets of return springs 5 ​​are fixedly connected between the lower surface of the liquid storage shell 4 and the inner side of the planting frame 2. The lower surface of the liquid storage shell 4 is provided with piston columns 6 corresponding to the ventilation holes 3. The upper surface of the liquid storage shell 4 is provided with several sets of through-hole liquid outlet holes 7.

[0032] When in use, the planting frames 2 on both sides of the A-frame 1 are installed in place. The liquid storage shell 4 is suspended above the inner side of the planting frame 2 by the return spring 5, maintaining a certain distance from the bottom of the planting frame 2. The piston column 6 is located on the lower surface of the liquid storage shell 4. In the initial state, the vent 3 is open. The piston column 6 is not embedded in the vent 3 on the lower surface of the planting frame 2. The vent 3 is connected to the outside, and air can circulate freely into the cultivation substrate in the planting frame 2, ensuring soil permeability and avoiding the impact of soil closure and lack of oxygen on strawberry root respiration, thus solving the problem of insufficient ventilation in traditional systems.

[0033] When watering is needed, water is injected into the storage tank 4 through the pipeline. The water gradually fills the inner cavity of the storage tank 4. As the weight of the water in the storage tank 4 increases, the gravity of the water gradually overcomes the initial elastic force of the return spring 5, forcing the storage tank 4 to move downward and compress the return spring 5. When the storage tank 4 moves downward, the piston column 6 moves towards the vent hole 3 at the same time until the piston column 6 completely passes through the vent hole 3, thereby sealing the vent hole 3 and preventing the water in the storage tank 4 from directly leaking out of the vent hole 3.

[0034] After the liquid storage shell 4 is lowered and completely sealed by the vent hole 3, the water inside the liquid storage shell 4 seeps out evenly through the liquid outlet hole 7 on the upper surface and flows into the cultivation substrate in the planting frame 2 to provide water and nutrients for the strawberry roots.

[0035] After irrigation, the water in the planting frame 2 and the liquid storage shell 4 is drained. As the water in the liquid storage shell 4 is drained, the spring releases potential energy to drive the liquid storage shell 4 to move upward and reset. The piston column 6 simultaneously disengages from the vent hole 3, and the vent hole 3 reopens, restoring air circulation at the bottom of the planting frame 2 and avoiding root rot caused by the high humidity environment of the traditional closed structure.

[0036] To facilitate the transfer of water from the storage tank 4 to the planting frame 2, for example, as shown... Figure 5 , Figure 7 , Figure 8 , Figure 9 As shown, the present invention also includes a plurality of through slots 8 on one side of the liquid storage shell 4, a horizontally arranged sealing plate 9 is slidably connected in the slots 8, a plurality of through holes 10 corresponding to the liquid outlet holes 7 are passed through the sealing plate 9 vertically, the through holes 10 and the liquid outlet holes 7 are initially staggered, a compression spring 11 is fixedly connected between one side of the sealing plate 9 and the inner wall of the liquid storage shell 4, a wedge-shaped compression surface 12 is provided on the side of the sealing plate 9 away from the compression spring 11, a plurality of compression rods 13 are fixedly connected to the inner side of the planting frame 2, and the upper end of the compression rods 13 is in compression contact with the wedge-shaped compression surface 12.

[0037] When in use, when irrigation is needed, water is delivered into the liquid storage shell 4. Due to the increased weight, the liquid storage shell 4 begins to move downward, causing the sealing plate 9 to move downward synchronously. As the liquid storage shell 4 moves downward, the upper end of the extrusion rod 13 gradually contacts the wedge-shaped extrusion surface 12 of the sealing plate 9 and generates an extrusion action. After the wedge-shaped extrusion surface 12 is extruded, it pushes the sealing plate 9 to slide towards the inner wall of the liquid storage shell 4, compressing the extrusion spring 11. During the sliding process of the sealing plate 9, the connecting hole 10 gradually aligns with the liquid outlet hole 7 of the liquid storage shell 4. When the liquid storage shell 4 moves downward to the point where the vent hole 3 is completely closed, the connecting hole 10 and the liquid outlet hole 7 are completely aligned, and the water permeates into the cultivation substrate in the planting frame 2 through the connecting hole 10 and the liquid outlet hole 7.

[0038] After irrigation, the remaining water in the storage tank 4 is drained, the weight of the storage tank 4 is reduced, the reset spring 5 drives the storage tank 4 to move upward and reset, the squeezing rod 13 gradually reduces the squeezing force on the wedge-shaped squeezing surface 12, the squeezing spring 11 releases potential energy, pushes the sealing plate 9 to slide away from the inner wall of the storage tank 4 and reset, the connecting hole 10 and the liquid outlet hole 7 gradually stagger, and finally return to the initial staggered state.

[0039] When not irrigated, the outlet hole 7 on the upper surface of the liquid storage shell 4 is staggered with the connecting hole 10 of the sealing plate 9 to prevent floating soil particles, strawberry dead leaf debris, etc. from entering the liquid storage shell 4 through the outlet hole 7 at the top, thus reducing the risk of blockage.

[0040] To facilitate cleaning of the area around the liquid outlet 7, for example, such as Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown, the present invention also includes a plurality of cleaning rods 14 distributed on the liquid storage shell 4, a slider 15 provided on the lower surface of the cleaning rod 14, a sliding groove 16 provided on the upper surface of the liquid storage shell 4 and slidably connected to the slider 15, an arc-shaped groove 17 formed by the outward protrusion of the inner wall of the planting frame 2, a connecting groove 18 provided on the inner side of the planting frame 2 and communicating with the interior of the arc-shaped groove 17, a float 19 provided in the arc-shaped groove 17, the cleaning rods 14 away from the float 19 being fixedly connected to the outer wall of the liquid storage shell 4 by a first elastic pull rope 20, a second elastic pull rope 21 being fixedly connected between adjacent cleaning rods 14, and the cleaning rods 14 close to the float 19 being fixedly connected to the float 19 by a rope 22.

[0041] In the initial state of use, there is no water accumulation in the planting frame 2. The float 19 is located at the bottom of the arc groove 17 due to gravity and does not exert any tension on the rope 22. During irrigation, the water in the liquid storage shell 4 seeps into the cultivation substrate through the liquid outlet 7. The water accumulates at the bottom of the planting frame 2, causing the water level in the planting frame 2 to rise. The rise in water level pushes the float 19 to float upward along the arc groove 17. The cleaning rod 14 close to the float 19 is pulled by the rope 22 to move towards the float 19. When the cleaning rod 14 moves, it relies on the slider 15 to slide in the slide groove 16, which can ensure the stability of the movement of the cleaning rod 14. When a group of cleaning rods 14 moves, the second elastic pull rope 21 drives the adjacent cleaning rods 14 to slide in sequence, so that all cleaning rods 14 move synchronously towards the float 19 along the upper surface of the liquid storage shell 4. During the sliding process, the lower surface of the cleaning rod 14 scrapes the upper surface of the liquid storage shell 4 to clean the area around the liquid outlet 7 and remove the attached nutrient solution crystals, dust, strawberry debris and other impurities.

[0042] After irrigation, the water in the planting frame 2 is drained, and the float 19 falls back to the bottom of the arc-shaped groove 17 with the water level. The rope 22 is loosened, and the cleaning rod 14 away from the float 19 moves in the opposite direction under the elastic force of the first elastic rope 20. The second elastic rope 21 drives all the cleaning rods 14 to reset synchronously and return to the initial uniform distribution state. During the reset process, the cleaning rods 14 perform secondary scraping and cleaning on the upper surface of the liquid storage shell 4. No manual intervention or additional power source is required. The change in water level in the planting frame 2 drives the float 19 to link with the cleaning rods 14, realizing dynamic cleaning of the upper surface of the liquid storage shell 4 and the liquid outlet 7.

[0043] For example, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 As shown, the present invention also includes a liquid storage tank 23 located below the A-frame 1, a water pump 24 connected to one side of the liquid storage tank 23, an infusion pipe 25 connected to the water pump 24 on the liquid storage tank 23, a manifold 26 located on the outer side of the planting frame 2, and the manifold 26 connected to the inside of the liquid storage shell 4 through several sets of hoses 27, and the infusion pipe 25 connected to the uppermost manifold 26.

[0044] When in use, inject the pre-prepared nutrient solution or clean water into the storage tank 23, turn on the water pump 24, the water pump 24 draws liquid from the storage tank 23 and delivers it to the uppermost manifold 26 through the infusion pipe 25. The liquid in the uppermost manifold 26 is diverted through the hose 27 to the storage shell 4 of the planting frame 2 of that layer. The weight of the liquid in the storage shell 4 increases, the compression return spring 5 moves down, the piston column 6 closes the vent hole 3, and at the same time the sealing plate 9 slides to align the outlet hole 7 with the connecting hole 10. The liquid permeates into the cultivation substrate through the outlet hole 7, completing the irrigation work.

[0045] To facilitate the completion of all irrigation work for planting frames 2, for example, as follows: Figure 1 , Figure 3 As shown, the present invention also includes an overflow pipe 28 connected to the upper side of one side of the planting frame 2, and the lower end of the overflow pipe 28 is connected to the lower manifold 26.

[0046] During use, the water pump 24 delivers the nutrient solution or clean water in the storage tank 23 to the uppermost manifold 26 through the infusion pipe 25, and then injects it into the storage shell 4 of the upper planting frame 2 through the hose 27. When the water in the storage shell 4 reaches a certain amount, it is discharged from the outlet hole 7 and enters the planting frame 2. When the water in the planting frame 2 reaches a certain amount, the water will overflow from the overflow pipe 28 on the upper side of the planting frame 2. The lower end of the overflow pipe 28 is connected to the lower manifold 26. The overflowing liquid flows into the lower manifold 26 along the overflow pipe 28 by gravity, and then is injected into the lower storage shell 4 through the hose 27, realizing the tiered transfer of liquid until all storage shells 4 are filled with liquid, completing the irrigation work of all planting frames 2.

[0047] For example, such as Figure 1 , Figure 3 , Figure 4 , Figure 9 As shown, the present invention also includes a vertically arranged drainage pipe 29 at the bottom inner side of the planting frame 2, and drainage holes 30 distributed in a circle on the outer side of the drainage pipe 29. The upper end of the drainage pipe 29 passes through the liquid storage shell 4 and is slidably connected to the liquid storage shell 4 in a sealed manner. The upper end of the drainage pipe 29 communicates with the inside of the liquid storage shell 4, and the lower end of the drainage pipe 29 passes through the planting frame 2 and is connected to a valve 31.

[0048] During use, the water pump 24 injects water into the storage tank 4 through the infusion pipe 25, the manifold 26 and the hose 27. As the weight of the water in the storage tank 4 increases, it gradually overcomes the elastic force of the return spring 5 and moves downward. During the downward movement, the piston column 6 on the lower surface of the storage tank 4 blocks the vent hole 3 and slides to connect with the drain pipe 29 and seals the drain hole 30 of the drain pipe 29. This prevents the water in the storage tank 4 from flowing into the planting frame 2 through the drain hole 30 when the vent hole 3 is not sealed, ensuring that the water is evenly discharged into the planting frame 2 only through the outlet hole 7, thus completing the irrigation.

[0049] After irrigation, turn off the water pump 24 and open the valve 31 at the lower end of the drain pipe 29. The water in the storage tank 4 is discharged through the opening at the upper end of the drain pipe 29. As the water in the storage tank 4 decreases, the return spring 5 moves the storage tank 4 upward. At this time, the storage tank 4 no longer blocks the drain hole 30 of the drain pipe 29. The remaining water in the planting frame 2 is discharged through the drain hole 30. When the storage tank 4 returns to its initial state, the water in the planting frame 2 and the storage tank 4 has been completely discharged. The piston column 6 releases the blockage of the vent hole 3 to prevent the strawberry roots from being soaked in water for a long time, which would lead to oxygen deficiency and rot.

[0050] For example, such as Figure 1 , Figure 3 , Figure 5 As shown, the present invention also includes a cultivation frame 32 inside the planting frame 2, and a plurality of bottom holes 33 communicating with the planting frame 2 are provided on the inner bottom side of the cultivation frame 32.

[0051] When in use, the planting frame 2 is equipped with a cultivation frame 32. Several sets of bottom holes 33 on the bottom of the inner side of the planting frame 2 are connected to the planting frame 2, which can form an air circulation path that runs through the top and bottom. During daily ventilation, outside air enters through the ventilation holes 3 at the bottom of the planting frame 2 and diffuses upward to the substrate of the cultivation frame 32 through the bottom holes 33, ensuring the air supply to the strawberry roots and avoiding soil hypoxia.

[0052] During irrigation, the water in the storage tank 4 permeates into the substrate of the cultivation frame 32 through the outlet hole 7; during drainage, the residual water in the cultivation frame 32 permeates into the bottom of the planting frame 2 through the bottom hole 33, and simultaneously removes the accumulated water with the drainage hole 30 to avoid the substrate from becoming too wet. The bottom hole 33 has a smaller diameter than the substrate particles, which can intercept impurities and reduce the risk of clogging of the air hole 3 and the drainage hole 30. In addition, the cultivation frame 32 can be disassembled independently, which facilitates strawberry planting and crop rotation operations and improves management convenience.

[0053] For example, the present invention further includes a lower end face of the piston column 6 being tapered, the piston column 6 passing through the vent hole 3 and being slidably connected to the vent hole 3 in a sealed manner, the bottom diameter of the piston column 6 being smaller than the aperture of the vent hole 3, and the piston column 6 being detachably connected to the liquid storage shell 4.

[0054] During use, when irrigating, the liquid storage shell 4 moves down, causing the piston column 6 to pass through and seal the vent hole 3; the detachable connection makes it easy to periodically disassemble the piston column 6 to clean the vent hole 3 and the surface of the piston column 6 of mud, sand, root debris and other impurities, avoiding sealing failure or vent hole 3 blockage caused by the accumulation of impurities. At the same time, it is convenient for maintenance and replacement, effectively solving the problems of insufficient air permeability and leakage of traditional closed structures.

[0055] For example, such as Figure 5 , Figure 7 , Figure 8 , Figure 9 As shown, the present invention also includes a guide rod 34 connected to the lower inner side of the planting frame 2, which is perpendicular to the moving direction of the rope 22. The two ends of the guide rod 34 are fixedly connected to the bottom inner side of the planting frame 2 through the connector 35. The rope 22 passes through the lower part of the guide rod 34 and extends upward to connect with the float 19.

[0056] When in use, when the float 19 moves vertically upward due to the rise in water level in the planting frame 2, the rope 22 turns along the lower part of the guide rod 34. Since the guide rod 34 is located on the lower part of the inner side of the planting frame 2, the rope 22 on the side of the cleaning rod 14 will squeeze the upper edge of the liquid storage shell 4 when it extends downward. When the rope 22 is tightened, the liquid storage shell 4 will be subjected to a downward component force, ensuring the stability of the liquid storage shell 4 when there is a lot of water in the planting frame 2.

[0057] For example, the present invention also includes an anti-siphon check valve provided at the connection between the infusion tube 25 and the manifold 26.

[0058] During use, the anti-siphon check valve at the connection between the infusion pipe 25 and the manifold 26 can prevent irrigation fluid backflow, maintain stable pipeline pressure, prevent air from entering the pipeline, and ensure irrigation continuity and nutrient solution purity.

[0059] When using this invention, the A-frame 1 is fixed in a suitable position inside the greenhouse. Three planting frames 2 are placed on each side of the A-frame 1. The planting frames 2 are 20cm wide and 15cm high. The distance between adjacent planting frames 2 is 20cm. The lowest planting frame 2 is 55cm off the ground. The distance between A-frame 1 and A-frame 1 is 60cm. A cultivation frame 32 is placed inside the planting frame 2. Strawberry cultivation substrate is placed inside the cultivation frame 32.

[0060] The greenhouses can be multi-span structures, with 60-mesh insect-proof netting used to isolate the ventilation areas around the greenhouses. A buffer zone is set up at the entrance, also surrounded by 60-mesh insect-proof netting to prevent whiteflies, aphids, and various moth pests from entering. 70 strawberry-specific plant grow lights (60 watts each) are installed per 667 square meters. The best and newest strawberry varieties selected are: Pink Jade, Yue Xue Fei, Yue Wang, Meng Zhi Ying, and Hong Jia. These five varieties have shallow dormancy, early or mid-maturing, large fruit size, excellent quality, strong disease resistance, and good storage and transportation properties, exhibiting superior overall characteristics. The mother seedlings are runners cultivated from production plants that best reflect the characteristics of the varieties. The nursery site is selected from loose, fertile, well-drained paddy fields that have never been planted with strawberries. Each acre is treated with 500-1000 kg of well-rotted organic fertilizer, 25 kg of compound fertilizer with 15% NPK content, 1 kg of borax, and 0.5 kg of zinc fertilizer. Transplanting should be done from mid-March to early April. Fifteen days before transplanting the mother plants, make beds with a width of 1.8m including the ditch. Transplant the mother plants in a single row in the middle of the bed with a plant spacing of 36cm, planting 1000 plants per acre. After the mother plants survive, apply fertilizer and manage the seedlings in a timely manner, and do a good job in preventing and controlling diseases and pests during the seedling stage, especially anthracnose.

[0061] After transplanting, ensure a sufficient water supply. Once runners develop, evenly distribute them around the mother plant, and mound soil around the nodes of the seedlings to press them down or use strawberry forks to secure them, promoting root growth. Apply compound fertilizer every 20 days at a 1000-fold dilution, 500 ml per plant. During the rainy season, ensure proper drainage to prevent waterlogging. Protect seedlings from high temperatures and drought in July and August, and stop fertilizing from mid-August. Throughout the growing season, weed regularly, removing flower buds immediately upon sighting. Pay special attention to the prevention and control of anthracnose during the seedling stage.

[0062] In the initial state, the liquid storage shell 4 is suspended above the inner side of the planting frame 2 by the reset spring 5. The piston column 6 is not embedded in the vent hole 3, and the vent hole 3 remains open to ensure air circulation at the bottom of the planting frame 2. The connecting hole 10 of the sealing plate 9 and the liquid outlet hole 7 of the liquid storage shell 4 are in an interleaved state to prevent impurities from entering the liquid storage shell 4.

[0063] According to the needs of strawberry growth stage, prepare an appropriate amount of nutrient solution or water in the storage tank 23, start the water pump 24, and transport the liquid in the storage tank 23 to the uppermost manifold 26 through the infusion pipe 25. The liquid is then diverted through the hose 27 to the storage shell 4 of the upper planting frame 2. As the weight of the liquid in the storage shell 4 increases, the return spring 5 is compressed. The storage shell 4 drives the piston column 6 to move downward until the piston column 6 completely seals the vent hole 3. At the same time, the squeezing rod 13 contacts the wedge-shaped squeezing surface 12 of the sealing plate 9, pushing the sealing plate 9 to slide so that the connecting hole 10 is aligned with the liquid outlet hole 7. The liquid permeates into the cultivation substrate through the liquid outlet hole 7.

[0064] During the downward movement of the liquid storage shell 4, the piston column 6 on the lower surface of the liquid storage shell 4 blocks the vent hole 3, and at the same time slides and connects with the drain pipe 29 to seal the drain hole 30 of the drain pipe 29, so as to prevent the water in the liquid storage shell 4 from flowing into the planting frame 2 through the drain hole 30 when the vent hole 3 is not sealed, and ensure that the water is evenly discharged into the planting frame 2 only through the liquid outlet hole 7 to complete the irrigation.

[0065] During irrigation, the water level at the bottom of the planting frame 2 rises, and the float 19 floats up along the arc groove 17. The cleaning rod 14 near the float 19 is pulled by the rope 22. The adjacent cleaning rods 14 slide synchronously under the action of the second elastic pull rope 21. The lower surface of the cleaning rod 14 scrapes the upper surface of the liquid storage shell 4 and the area around the liquid outlet 7 to remove nutrient solution crystals, impurities, etc.

[0066] Meanwhile, when the float 19 moves vertically upward due to the rise in water level in the planting frame 2, the rope 22 turns along the lower part of the guide rod 34. Since the guide rod 34 is located in the lower part of the inner side of the planting frame 2, the rope 22 on the side of the cleaning rod 14 will squeeze the upper edge of the liquid storage shell 4 when it extends downward. When the rope 22 is tightened, the liquid storage shell 4 will be subjected to a downward component force, ensuring the stability of the liquid storage shell 4 when there is a lot of water in the planting frame 2.

[0067] Once the liquid in the upper planting frame 2 reaches a certain amount, the excess liquid overflows from the overflow pipe 28 and flows into the lower manifold 26 by gravity, thus completing the filling and irrigation of each layer of liquid storage shell 4 in sequence, realizing the hierarchical transfer of liquid. During the irrigation process, the liquid storage shell 4 remains in a downward state, and the vent 3 remains closed to ensure that the liquid permeates evenly into the cultivation substrate and avoids leakage.

[0068] After irrigation, turn off the water pump 24 and open the valve 31 at the lower end of the drain pipe 29. The water in the storage tank 4 is discharged through the opening at the upper end of the drain pipe 29. As the water in the storage tank 4 decreases, the return spring 5 moves the storage tank 4 upward. At this time, the storage tank 4 no longer blocks the drain hole 30 of the drain pipe 29, and the remaining water in the planting frame 2 is discharged through the drain hole 30. When the storage tank 4 returns to its initial state, the water in the planting frame 2 and the storage tank 4 has been completely discharged. The piston column 6 releases its obstruction of the vent hole 3, preventing the strawberry roots from being soaked in water for a long time, which could lead to oxygen deficiency and rot.

[0069] High temperatures are often encountered during planting. Before transplanting, cover the seedlings with a shade net with a shading rate of 50% to 60%. Generally, after 15 to 20 days, when the seedlings resume growth, remove the shade net.

[0070] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A greenhouse strawberry A-frame trellis cultivation system, characterized in that, Includes an A-frame (1) and several planting frames (2) respectively set on both sides of the A-frame (1). The lower surface of the planting frame (2) is provided with several sets of through-hole ventilation holes (3). The inner side of the planting frame (2) is provided with a horizontally arranged liquid storage shell (4). The lower surface of the liquid storage shell (4) and the inner side of the planting frame (2) are fixedly connected with several sets of return springs (5). The lower surface of the liquid storage shell (4) is provided with piston columns (6) corresponding to the ventilation holes (3). The upper surface of the liquid storage shell (4) is provided with several sets of through-hole liquid outlet holes (7). The bottom inner side of the planting frame (2) is provided with a vertically arranged drain pipe (29), and the outer side of the drain pipe (29) is provided with circumferentially distributed drain holes (30). The upper end of the drain pipe (29) passes through the liquid storage shell (4) and is sealed and slidably connected to the liquid storage shell (4). The upper end of the drain pipe (29) is connected to the inside of the liquid storage shell (4), and the lower end of the drain pipe (29) passes through the planting frame (2) and is connected to a valve (31). The planting frame (2) is provided with a cultivation frame (32), and the bottom of the inner side of the cultivation frame (32) is provided with several sets of bottom holes (33) that are connected to the planting frame (2).

2. The greenhouse strawberry A-frame trellis cultivation system according to claim 1, characterized in that, A number of through slots (8) are provided on one side of the liquid storage shell (4). A horizontally arranged sealing plate (9) is slidably connected in the slot (8). A number of connecting holes (10) corresponding to the liquid outlet (7) are passed through the sealing plate (9) from top to bottom. The connecting holes (10) and the liquid outlet (7) are staggered in the initial state. A compression spring (11) is fixedly connected between one side of the sealing plate (9) and the inner wall of the liquid storage shell (4). A wedge-shaped compression surface (12) is provided on the side of the sealing plate (9) away from the compression spring (11). A number of compression rods (13) are fixedly connected to the inner side of the planting frame (2). The upper end of the compression rod (13) is in compression contact with the wedge-shaped compression surface (12).

3. The greenhouse strawberry A-frame trellis cultivation system according to claim 2, characterized in that, Several sets of cleaning rods (14) are distributed on the liquid storage shell (4). The lower surface of the cleaning rod (14) is provided with a slider (15). The upper surface of the liquid storage shell (4) is provided with a sliding groove (16) that is slidably connected to the slider (15). The inner wall of the planting frame (2) protrudes outward to form an arc groove (17). The inner side of the planting frame (2) is provided with a connecting groove (18) that communicates with the inside of the arc groove (17). A float (19) is provided in the arc groove (17). The cleaning rod (14) away from the float (19) is fixedly connected to the outer wall of the liquid storage shell (4) through a first elastic pull rope (20). A second elastic pull rope (21) is fixedly connected between adjacent cleaning rods (14). The cleaning rod (14) close to the float (19) is fixedly connected to the float (19) through a rope (22).

4. The greenhouse strawberry A-frame trellis cultivation system according to claim 3, characterized in that, A liquid storage tank (23) is provided below the A-frame (1). A water pump (24) is connected to one side of the liquid storage tank (23). An infusion pipe (25) connected to the water pump (24) is provided on the liquid storage tank (23). A manifold (26) is provided on the outside of the planting frame (2). The manifold (26) is connected to the inside of the liquid storage shell (4) through several sets of hoses (27). The infusion pipe (25) is connected to the uppermost manifold (26).

5. The greenhouse strawberry A-frame trellis cultivation system according to claim 4, characterized in that, An overflow pipe (28) is connected to the upper side of the planting frame (2), and the lower end of the overflow pipe (28) is connected to the manifold (26) below.

6. The greenhouse strawberry A-frame trellis cultivation system according to claim 5, characterized in that, The lower end face of the piston column (6) is conical. The piston column (6) passes through the vent hole (3) and is slidably connected to the vent hole (3). The bottom diameter of the piston column (6) is smaller than the aperture of the vent hole (3). The piston column (6) is detachably connected to the liquid storage shell (4).

7. The greenhouse strawberry A-frame trellis cultivation system according to claim 6, characterized in that, The lower inner side of the planting frame (2) is connected to a guide rod (34) perpendicular to the direction of rope (22) movement. The two ends of the guide rod (34) are fixedly connected to the bottom inner side of the planting frame (2) through connectors (35). The rope (22) passes through the lower part of the guide rod (34) and extends upward to connect with the float (19).

8. The greenhouse strawberry A-frame cultivation system according to claim 7, characterized in that, An anti-siphon check valve is provided at the connection between the infusion tube (25) and the manifold (26).

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