Rice cultivation device and method

Abstract

The invention belongs to the technical field of rice cultivation, and particularly relates to a rice cultivation device and method. A group of connecting columns are uniformly distributed on the surface of the connecting longitudinal plate; inserting grooves are formed in the two ends of the supporting transverse frame; a group of cultivation modules are uniformly distributed on the surface of the supporting cross frame; the cultivation module comprises a cultivation disc and a cultivation cylinder; a water absorption column penetrates through the middle part of the cultivation disc; a group of root system extension holes are uniformly distributed in the side surface of the cultivation cylinder. In the early stage of cultivation, the supporting transverse frame is controlled to be in a high-level position, all the cultivation trays are made to be flush with the water surface of the rice field, water can be continuously conveyed into nutrient soil of the cultivation barrels through the water absorption columns, so that rice seeds obtain a small amount of water needed by germination, and after the seeds germinate and seedlings reach the designated height, the supporting transverse frame is controlled to descend, and the seedlings are cultivated. All the cultivation modules are immersed in water, sufficient water is provided for rice, and meanwhile the roots of the rice can grow and expand outwards through the root system extending holes.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of rice cultivation, and in particular to a rice cultivation device and method. BACKGROUND

[0002] As a major food crop in China, the cultivation technology of rice directly affects food security and sustainable agricultural development. Traditional rice cultivation relies heavily on manual operation, which has problems such as high labor intensity, low efficiency, and insufficient standardization. With the acceleration of agricultural mechanization, rice cultivation devices have gradually developed from simple tools to intelligent and integrated devices. Currently, a variety of cultivation equipment, including seedling trays, rice transplanter, and water and fertilizer integrated equipment, are applied in production. These technologies significantly improve rice yield and quality by optimizing seeding density, water control, and nutrient management, providing important support for modern agriculture.

[0003] A patent of Chinese patent application CN116724789B discloses a kind of rice intelligent cultivation device and method, and its technical scheme points are: including connecting plate, two connecting plates are symmetrically arranged, two connecting plates are connected with floating baffle, two floating baffles are detachably connected;Cultivation floating plate is slidably connected between two floating baffles, cultivation floating plate is provided with cultivation groove, the bottom of cultivation groove is provided with through hole, through hole is fixedly connected with retaining ring, retaining ring is fixedly connected with material retaining ring, and through hole is provided with through hole;Fixed block is fixedly connected on the side wall of cultivation floating plate, limit slot is formed in fixed block, first spring is fixedly connected in limit slot, moving block is fixedly connected on first spring, moving rod is fixedly connected on moving block, and one end of moving rod passes through fixed block, the side wall of cultivation floating plate and is located in the inside of cultivation groove;Effect is that whether cultivation groove inside needs to be treated with seedling can be intelligently monitored.

[0004] However, the above-mentioned technology has the following defects: The conditions required by rice at different development stages are usually different, especially during the germination and growth stages. For the seed germination period, it should meet the condition of less water. If it is submerged in water for a long time, the seed will be in an oxygen-deficient state, which will lead to failure to germinate or even rot. For the seedling growth period, the leaves can meet the respiration requirement, and there is no need to consider the problem of oxygen deficiency. At this time, a large amount of water needs to be supplied, and the water level in the rice field should be raised. However, the above-mentioned existing cultivation device plants rice in the cultivation groove inside the cultivation floating plate, and the cultivation floating plate floats on the water surface. In addition, retaining rings, material retaining rings, and through holes are provided. During the germination stage, the seeds in the cultivation groove are difficult to contact with water due to the blockage of the retaining rings and the material retaining rings. The seeds lack the water required for germination. During the growth stage, the roots of the seedlings are also difficult to extend downward and absorb water through the complex path of the material retaining ring and the through hole, which also has the problems of insufficient water supply and poor root fixation. Therefore, the existing cultivation device considers only a single condition and cannot provide a diversified suitable environment for the development of rice.

[0005] To this end, the present application provides a rice cultivation device and method. SUMMARY

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical scheme adopted by the present application to solve its technical problems is: a rice cultivation device according to the present application, comprising a connecting longitudinal plate and a supporting crossbar;

[0008] The connecting longitudinal plate is provided with a pair of banks respectively fixedly installed on both sides of the paddy field; the surface of the connecting longitudinal plate is uniformly distributed with a set of connecting columns;

[0009] The supporting crossbar is provided with a plurality of supporting crossbars distributed between the pair of connecting longitudinal plates; the middle part of the supporting crossbar is recessed towards the inside of the paddy field; the two ends of the supporting crossbar are provided with insertion slots, and the connecting columns penetrate the insertion slots; the supporting crossbar and the connecting longitudinal plate are connected through the connecting columns and the insertion slots;

[0010] The surface of the supporting crossbar is uniformly distributed with a set of cultivation modules; the cultivation modules are used to provide an independent environment for the germination and growth of rice; the cultivation modules comprise a cultivation tray and a cultivation cylinder;

[0011] The cultivation tray is fixedly installed on the surface of the supporting crossbar; the middle part of the cultivation tray is provided with a water absorption column penetratingly; the cultivation cylinder is fixedly installed on the upper side of the cultivation tray; the side surface of the cultivation cylinder is uniformly distributed with a set of root system extension holes.

[0012] Preferably, the supporting crossbar is fixedly installed with a connecting block at the corresponding position of the insertion slot at both ends; the connecting block is internally threadedly connected with a tension bolt, and the end of the tension bolt is pressed against the surface of the connecting column.

[0013] Preferably, a side slot is formed in the inner side wall of the cultivation cylinder; a baffle is slidingly fitted in the side slot; a buoyancy ring is fixedly installed on the upper end of the baffle; a limiting rope is fixedly installed between the lower end of the baffle and the cultivation cylinder.

[0014] Preferably, a storage vessel is fixedly installed at the end of the supporting crossbar; a nutrient solution is added in the storage vessel; an annular groove is formed in the upper side of the cultivation tray; an annular plate is fixedly installed in the annular groove; a set of through holes are uniformly distributed on the surface of the annular plate; the annular groove and the storage vessel are in communication with each other through a flow guide assembly.

[0015] Preferably, the flow guide assembly comprises a flow assisting cylinder; one side of the bottom of the flow assisting cylinder is communicated with the storage container through a suction tube, and the other side is communicated with the annular groove of each cultivation module through a pump tube; the suction tube and the pump tube are both internally provided with a one-way valve; a piston is slidingly and sealingly matched in the flow assisting cylinder; a piston rod is fixedly installed on the upper side of the piston; a guide plate is fixedly installed on the end of the piston rod extending out of the flow assisting cylinder; and a spring is fixedly installed between the guide plate and the flow assisting cylinder.

[0016] Preferably, the bottom of the flow assisting cylinder is communicated with an air suction tube; and the air suction tube is internally provided with a one-way valve.

[0017] Preferably, an isolation filter cloth is fixedly installed at a position above the annular plate in the annular groove; and a transition cavity is formed between the isolation filter cloth and the annular plate.

[0018] Preferably, a core block is slidingly and sealingly matched in the through hole; a T-shaped groove is formed in the core block; and an elastic strip is fixedly installed between the lower end of the core block and the cultivation tray.

[0019] A rice cultivation method, which adopts the above rice cultivation device, comprises a rice seed germination stage and a seedling growth stage.

[0020] The rice seed germination stage comprises the following steps.

[0021] A1, placing nutrient soil and rice seeds in the cultivation cylinder of each cultivation module, so that the nutrient soil is laid on the upper side of the cultivation tray and covers the rice seeds;

[0022] A2, placing the support cross frame between the pair of connecting vertical plates on the bank of the rice field, and aligning the connecting column into the slot, so as to erect each cultivation module above the rice field;

[0023] A3, controlling the support cross frame to be at a high level position, so as to make each cultivation tray be flush with the water surface of the rice field, and continuously conveying water into the nutrient soil in the cultivation cylinder through the water suction column until the rice seeds germinate;

[0024] The seedling growth stage comprises the following steps.

[0025] B1, after the seeds germinate and the seedlings reach 15-30 cm, controlling the support cross frame to be lowered, so that each cultivation module is immersed in water, and the cultivation tray and the bottom of the cultivation cylinder are immersed in the soil at the bottom of the water;

[0026] B2, the buoyancy ring is driven by the buoyancy to make the baffle rise upward, so as to make the root system extension hole be in an open state, and lengthen the height of the cultivation cylinder;

[0027] B3. Periodically, the nutrient solution and air are delivered to the inside of the annular groove of each cultivation module through the flow guide assembly, so as to promote the upward delivery of the nutrients and oxygen to the inside of the soil around the rice root system.

[0028] The beneficial effects of the present application are as follows:

[0029] 1. The rice cultivation device and method, in the early stage of cultivation, the support cross is controlled to be in a high level position, so as to make each cultivation tray be flush with the water surface of the rice field, and the water can be continuously delivered to the nutrient soil inside the cultivation cylinder through the water suction column, so that the rice seeds obtain a small amount of water required for germination, and the rice seeds are not submerged in water, so as to prevent the occurrence of oxygen deficiency. After the seeds germinate and the seedlings reach a specified height, the support cross is controlled to be lowered, each cultivation module is submerged in water, and the cultivation tray and the bottom of the cultivation cylinder are immersed in the soil under water to a certain depth, so that the bottom of the cultivation cylinder is in direct contact with the soil, which can provide sufficient water for the rice and also allow the roots to grow and expand outward through the root extension hole, so that the roots spread in the nutrient soil inside and outside the cultivation cylinder and the surrounding soil, thereby enhancing the root fixation of the rice and improving the resistance to lodging.

[0030] 2. The rice cultivation device and method, in the seed germination stage, the cultivation cylinder is located above the water surface, at this time, the baffle is located in the side groove and blocks the root extension hole, so as to prevent the nutrient soil and rice seeds in the cultivation cylinder from leaking outward through the root extension hole. In the seedling growth stage, the cultivation cylinder is submerged in water, at this time, the buoyancy ring is driven upward by the buoyancy to lift the baffle, so that the root extension hole is in an open state, so as to allow the rice roots to grow outward through the root extension hole, and the upward movement of the buoyancy ring and the baffle can extend the height of the cultivation cylinder, so as to further limit and block the rice during the growth process, so as to prevent the rice from being collapsed by the action of water flow and wind force.

[0031] 3. The rice cultivation device and method, in the seedling growth stage, the nutrient solution in the storage vessel can flow into the annular groove of each cultivation module through the flow guide assembly, and then flow into the soil inside the cultivation cylinder through the through hole, so as to provide nutrient components for the rice, compared with direct sowing in the field, this method can improve the utilization degree of the nutrient solution by the rice root system, and reduce the problem that the nutrient solution is diffused and spread with water, so that the degree of capture of the nutrient solution by the rice is low. BRIEF DESCRIPTION OF DRAWINGS

[0032] The present application will be further described below with reference to the drawings.

[0033] Figure 1 is a perspective view of the present application;

[0034] Figure 2 is a structural schematic view of the connection between the longitudinal plate and the support cross.

[0035] Figure 3 yes Figure 2 Enlarged view of a portion of point A in the middle;

[0036] Figure 4 This is a schematic diagram of the supporting crossbeam structure in this invention;

[0037] Figure 5 This is a schematic diagram of the structure of the cultivation tray and cultivation cylinder in this invention;

[0038] Figure 6 This is a cross-sectional view of the cultivation tray and cultivation cylinder in this invention;

[0039] Figure 7 yes Figure 6 Enlarged view of a section at point B in the middle;

[0040] Figure 8 This is a schematic diagram of the method flow of the present invention.

[0041] In the diagram: 1. Connecting longitudinal plate; 2. Supporting crossbar; 3. Connecting column; 4. Slot; 5. Cultivation tray; 6. Cultivation cylinder; 7. Water absorption column; 8. Root extension hole; 9. Connecting block; 10. Tightening bolt; 11. Side groove; 12. Baffle plate; 13. Buoyancy ring; 14. Restriction rope; 15. Storage container; 16. Annular groove; 17. Annular plate; 18. Through hole; 19. Flow aid cylinder; 20. Liquid suction pipe; 21. Liquid pump pipe; 22. Guide plate; 23. Spring; 24. Air suction pipe; 25. Isolation filter cloth; 26. Transition cavity; 27. Core block; 28. T-slot; 29. ​​Elastic strip. Detailed Implementation

[0042] 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.

[0043] like Figures 1 to 7 As shown, the rice cultivation device of the present invention includes a connecting longitudinal plate 1 and a supporting transverse frame 2.

[0044] The connecting longitudinal plate 1 is provided in pairs and is fixedly installed on the banks of both sides of the paddy field; a set of connecting columns 3 are evenly distributed on the surface of the connecting longitudinal plate 1;

[0045] The supporting crossbeam 2 is provided with several of them and distributed between a pair of connecting longitudinal plates 1; the middle part of the supporting crossbeam 2 is recessed into the paddy field; slots 4 are opened at both ends of the supporting crossbeam 2, and the connecting column 3 passes through the slots 4; the supporting crossbeam 2 and the connecting longitudinal plate 1 are connected by the connecting column 3 and the slots 4.

[0046] A set of cultivation modules are evenly distributed on the surface of the supporting cross frame 2; the cultivation module is used to provide an independent environment for rice germination and growth; the cultivation module includes a cultivation tray 5 and a cultivation cylinder 6;

[0047] The cultivation tray 5 is fixedly installed on the surface of the support cross 2; a water absorption column 7 is arranged in the middle of the cultivation tray 5; the water absorption column 7 can be made of sponge, cotton core or other water absorption materials; the cultivation cylinder 6 is fixedly installed on the upper side of the cultivation tray 5; and a group of root system extension holes 8 are uniformly distributed on the side of the cultivation cylinder 6.

[0048] The requirements of rice in different development periods are usually different, especially in the seed germination and growth stages; for the seed germination period, a little water should be provided; if the seed is submerged in water for a long time, the seed will be in an oxygen deficiency state, resulting in no germination or even seed rot; for the seedling growth period, the leaves can meet the respiration requirement, and the oxygen deficiency problem does not need to be considered too much; at this time, a large amount of water needs to be supplied, and the water level of the rice field should be increased; however, the existing cultivation device plants the rice in the cultivation groove of the cultivation floating plate, the cultivation floating plate floats on the water surface, and a blocking ring, a blocking material ring and a through hole are further arranged; in the seed germination stage, the seed in the cultivation groove is difficult to contact with water due to the blocking of the blocking ring and the blocking material ring, and the seed is insufficient in water required for germination; in the growth stage, the root system of the seedling is difficult to extend downward and absorb water through the complex path of the blocking material ring and the through hole, and the problems of insufficient water supply and poor root system fixation exist; therefore, the existing cultivation device considers too single, and cannot provide a diversified suitable environment for the development of the rice.

[0049] In use, the nutrient soil and the rice seed are placed in the cultivation cylinder 6 of each cultivation module, the nutrient soil is laid on the upper side of the cultivation tray 5, the support cross 2 is arranged between the pair of connecting vertical plates 1 on the bank of the rice field, the connecting column 3 is aligned and inserted into the slot 4, so as to control and adjust the erection height of the support cross 2 above the rice field, thereby providing the rice with the corresponding conditions in different development stages without adjusting the water level of the rice field.

[0050] In the early cultivation stage, the support cross 2 is controlled to be in a high level position, each cultivation tray 5 is flush with the water surface of the rice field, the water is continuously transported into the nutrient soil in the cultivation cylinder 6 through the water absorption column 7, the rice seed obtains a little water required for germination, and the seed is not submerged in water to prevent oxygen deficiency; after the seed germinates and the seedling reaches a specified height, the height of the support cross 2 is controlled to be lowered, each cultivation module is immersed in water, and the cultivation tray 5 and the cultivation cylinder 6 are immersed in the soil at the bottom of the water to a certain depth, so that the bottom of the cultivation cylinder 6 directly contacts with the soil, the rice is provided with sufficient water, and the root system of the rice can grow and expand outward through the root system extension hole 8, so that the root system spreads in the nutrient soil inside and outside the cultivation cylinder 6 and the surrounding soil, the self-rooting fixation of the rice is enhanced, and the lodging resistance of the rice is improved; in addition, after the rice is ripe, the support cross 2 can be directly lifted upward and the rice can be taken out of the field, so that the harvesting operation is facilitated.

[0051] As another embodiment of the present application, the support cross 2 is fixedly installed with a connecting block 9 at the corresponding position of the slot 4 at both ends; the connecting block 9 is internally threadedly connected with a tension bolt 10, and the end of the tension bolt 10 is pressed against the surface of the connecting column 3.

[0052] When the height of the support cross 2 needs to be adjusted, the tension bolt 10 is rotated and loosened, and then the support cross 2 is controlled to move up and down outside the connecting column 3, and after reaching the appropriate height, the end of the tension bolt 10 is pressed against the connecting column 3 to realize the mutual fixation between the support cross 2 and the connecting longitudinal plate 1.

[0053] As another embodiment of the present application, the side wall of the cultivation cylinder 6 is internally provided with a side slot 11; the side slot 11 is internally slidably fitted with a baffle 12; the upper end of the baffle 12 is fixedly installed with a buoyancy ring 13; and the lower end of the baffle 12 and the cultivation cylinder 6 are fixedly installed with a limiting rope 14, which can prevent the baffle 12 from being separated upward from the cultivation cylinder 6.

[0054] In the seed germination stage, the cultivation cylinder 6 is located above the water surface, at this time the baffle 12 is located inside the side slot 11 and shields and blocks the root system extension hole 8, preventing the nutrient soil and rice seeds inside the cultivation cylinder 6 from leaking outward through the root system extension hole 8, while in the seedling growth stage, the cultivation cylinder 6 is submerged in water, at this time the buoyancy ring 13 is driven upward by the buoyancy to lift the baffle 12, and then the root system extension hole 8 is in an open state, so that the rice roots grow outward through the root system extension hole 8, and the buoyancy ring 13 and the baffle 12 move upward to extend the height of the cultivation cylinder 6, further limiting and blocking the growing rice to prevent it from being collapsed by the action of water flow and wind force.

[0055] As another embodiment of the present application, the end of the support cross 2 is fixedly installed with a storage vessel 15; the storage vessel 15 is internally added with nutrient solution; the upper side of the cultivation plate 5 is provided with an annular groove 16; the annular groove 16 is internally fixedly installed with an annular plate 17; the surface of the annular plate 17 is uniformly distributed with a group of through holes 18; and the annular groove 16 and the storage vessel 15 are in communication with each other through a flow guide assembly.

[0056] In the seedling growth stage, the nutrient solution in the storage vessel 15 can flow into the annular groove 16 of each cultivation module through the flow guide assembly, and then flow upward into the soil inside the cultivation cylinder 6 through the through holes 18 to provide nutrient components for the fixed-point water rice, compared with direct scattering in the field, this way can improve the utilization degree of the nutrient solution by the rice roots, and reduce the problem that the nutrient solution is captured by the rice due to the diffusion and spread of water.

[0057] The flow guide assembly comprises a flow assisting cylinder 19; one side of the bottom of the flow assisting cylinder 19 is communicated with the storage container 15 through a liquid suction pipe 20, and the other side is communicated with the annular groove 16 of each cultivation module through a liquid pumping pipe 21; the liquid suction pipe 20 and the liquid pumping pipe 21 are both internally provided with a one-way valve; the flow assisting cylinder 19 is internally slidably and sealingly matched with a piston; the upper side of the piston is fixedly installed with a piston rod; the end of the piston rod extending out of the flow assisting cylinder 19 is fixedly installed with a guide plate 22; the guide plate 22 and the flow assisting cylinder 19 are fixedly installed with a spring 23.

[0058] If the nutrient solution is supplied to the plurality of cultivation modules in a self-flowing manner by gravity, it is difficult to achieve uniform supply, and the pipeline along the way is prone to blockage. Therefore, by setting the flow guide assembly, the management personnel can periodically operate the flow guide assembly. By pressing the guide plate 22 and cooperating with the spring 23, the piston reciprocates up and down in the flow assisting cylinder 19. When the piston moves upward, negative pressure is generated in the bottom of the flow assisting cylinder 19, and the nutrient solution in the storage container 15 can be sucked into the flow assisting cylinder 19 through the liquid suction pipe 20. When the piston moves downward, the nutrient solution in the bottom of the flow assisting cylinder 19 is compressed and then extruded into the annular groove 16 of each cultivation module through the liquid pumping pipe 21. The nutrient supply can also pressurize the supply path to prevent local blockage and uniformly deliver the nutrient solution to each cultivation module, thereby improving the synchronicity of rice development at different positions.

[0059] The bottom of the flow assisting cylinder 19 is communicated with an air suction pipe 24; the air suction pipe 24 is internally provided with a one-way valve. When negative pressure is generated in the bottom of the flow assisting cylinder 19, external air can be simultaneously sucked into the flow assisting cylinder 19 through the air suction pipe 24, forming a nutrient solution-air mixture in the flow assisting cylinder 19. Therefore, while supplying nutrients, oxygen can also be delivered into the soil inside the cultivation cylinder 6 to promote rice root respiration to produce energy, thereby fully maintaining the life activities of growth, nutrient and water absorption.

[0060] As another embodiment of the present application, an isolation filter cloth 25 is fixedly installed at a position above the annular plate 17 in the annular groove 16; a transition cavity 26 is formed between the isolation filter cloth 25 and the annular plate 17.

[0061] The soil inside the cultivation cylinder 6 is supported on the upper side of the isolation filter cloth 25 by setting the isolation filter cloth 25. The soil particles cannot move downward through the isolation filter cloth 25, and the water in the soil can fill the inside of the transition cavity 26. During the delivery of the nutrient solution and air, the nutrient solution and air from the annular groove 16 can first mix into the water in the transition cavity 26, and then the water carrying nutrients and oxygen can be immersed into the soil upward through the isolation filter cloth 25, thereby improving the penetration effect of nutrients and oxygen in the soil, so that the roots at each position can uniformly absorb nutrients and oxygen.

[0062] The core block 27 is in sliding sealing fit in the through hole 18; a T-shaped groove 28 is formed in the core block 27; and the elastic strip 29 is fixedly installed between the lower end of the core block 27 and the cultivation plate 5.

[0063] When the nutrient liquid-air mixture enters the annular groove 16 through the pump liquid pipe 21, the pressure in the annular groove 16 gradually increases due to the fact that the two ends of the top of the T-shaped groove 28 are blocked by the through hole 18, so that the core block 27 moves upward in the through hole 18 until the top of the T-shaped groove 28 protrudes from the surface of the annular plate 17, and then the nutrient liquid-air mixture in the annular groove 16 can be injected into the transition cavity 26 through the T-shaped groove 28. During the injection process, the mixture sprayed from the T-shaped groove 28 can generate a flow effect in the transition cavity 26, promoting the mixing effect among water, nutrient liquid and air. When the core block 27 moves upward, it can press and deform the isolation filter cloth 25 upward, and then the isolation filter cloth 25 drives the soil above it to move, promoting the soil to produce a small amplitude loosening effect, which is conducive to the transmission of water, nutrients and oxygen in the soil, further improving the uniformity of the distribution of nutrients and oxygen in the soil, and at the same time, it avoids excessive stirring of the soil in the cultivation cylinder 6, avoids damaging the connection structure between the roots and the soil, and further prevents the fine impurities in the water from entering the annular groove 16 through the through hole 18 or the T-shaped groove 28 to cause blockage.

[0064] As shown in Figure 8 The rice cultivation method of the present application adopts the above-mentioned rice cultivation device, and includes a rice seed germination stage and a seedling growth stage.

[0065] The rice seed germination stage includes the following steps:

[0066] A1, placing nutrient soil and rice seeds in the cultivation cylinder 6 of each cultivation module, so that the nutrient soil is laid on the upper side of the cultivation plate 5, and the nutrient soil covers the rice seeds;

[0067] A2, placing the support cross frame 2 between a pair of connecting vertical plates 1 on the bank of the rice field, and aligning the connecting columns 3 into the insertion slots 4 to erect each cultivation module above the rice field;

[0068] A3, controlling the support cross frame 2 to be at a high level position, so that each cultivation plate 5 is flush with the water surface of the rice field, and the water column 7 continuously delivers water to the nutrient soil in the cultivation cylinder 6 until the rice seeds germinate;

[0069] The seedling growth stage includes the following steps:

[0070] B1, after the seed germination and the seedling reaches 15-30cm, the support horizontal frame 2 is controlled to lower the height, each cultivation module is immersed in water, and the cultivation plate 5 and the bottom of the cultivation cylinder 6 are immersed in the soil at the bottom of water;

[0071] B2, the buoyancy ring 13 is driven upward by the buoyancy effect, the root system extension hole 8 is in an open state, and the height of the cultivation cylinder 6 is extended;

[0072] B3, the nutrient solution and air are periodically transported to the inside of the annular groove 16 of each cultivation module through the flow guide assembly, so that the nutrients and oxygen are upwardly transported to the soil around the rice root system.

[0073] The above front, rear, left, right, up, down are based on the drawings in the description Figure 1 As a standard, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and the like.

[0074] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the scope of protection of the present application.

[0075] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A rice cultivation device, characterized in that: Includes connecting longitudinal plate (1) and supporting cross frame (2); The connecting longitudinal plate (1) is provided with a pair and is fixedly installed on the banks of both sides of the paddy field; a set of connecting columns (3) are evenly distributed on the surface of the connecting longitudinal plate (1). The supporting crossbeam (2) is provided with several of them and distributed between a pair of connecting longitudinal plates (1); the middle part of the supporting crossbeam (2) is recessed into the paddy field; slots (4) are provided at both ends of the supporting crossbeam (2); the supporting crossbeam (2) and the connecting longitudinal plates (1) are connected by connecting columns (3) and slots (4). A set of cultivation modules are evenly distributed on the surface of the supporting cross frame (2); the cultivation module is used to provide an independent environment for rice germination and growth; the cultivation module includes a cultivation tray (5) and a cultivation cylinder (6). The cultivation tray (5) is fixedly installed on the surface of the support frame (2); a water-absorbing column (7) is provided through the middle of the cultivation tray (5); the cultivation cylinder (6) is fixedly installed on the upper side of the cultivation tray (5); a set of root extension holes (8) are evenly distributed on the side of the cultivation cylinder (6).

2. The rice cultivation device according to claim 1, characterized in that: The two ends of the support crossbeam (2) are fixedly installed with connecting blocks (9) at the corresponding positions of the slots (4); the connecting blocks (9) are internally threaded with tightening bolts (10).

3. The rice cultivation device according to claim 1, characterized in that: The cultivation tube (6) has a side groove (11) inside its side wall; a baffle (12) is slidably fitted inside the side groove (11); a buoyancy ring (13) is fixedly installed on the upper end of the baffle (12); and a restraining rope (14) is fixedly installed between the lower end of the baffle (12) and the cultivation tube (6).

4. The rice cultivation device according to claim 1, characterized in that: A storage container (15) is fixedly installed at the end of the supporting crossbeam (2); nutrient solution is added inside the storage container (15); an annular groove (16) is opened on the upper side of the cultivation tray (5); an annular plate (17) is fixedly installed inside the annular groove (16); a set of through holes (18) are evenly distributed on the surface of the annular plate (17); the annular groove (16) and the storage container (15) are interconnected through a flow guide component.

5. A rice cultivation device according to claim 4, characterized in that: The flow guiding assembly includes a flow aid cylinder (19); one side of the bottom of the flow aid cylinder (19) is connected to the storage container (15) through a suction pipe (20), and the other side is connected to the annular groove (16) of each cultivation module through a pump pipe (21); both the suction pipe (20) and the pump pipe (21) are equipped with one-way valves; a piston is slidably sealed inside the flow aid cylinder (19); a piston rod is fixedly installed on the upper side of the piston; a guide plate (22) is fixedly installed at one end of the piston rod extending outside the flow aid cylinder (19); a spring (23) is fixedly installed between the guide plate (22) and the flow aid cylinder (19).

6. The rice cultivation device according to claim 5, characterized in that: The bottom of the flow aid tube (19) is connected to an air intake pipe (24); a one-way valve is installed inside the air intake pipe (24).

7. A rice cultivation device according to claim 6, characterized in that: An isolation filter cloth (25) is fixedly installed inside the annular groove (16) above the annular plate (17); a transition cavity (26) is formed between the isolation filter cloth (25) and the annular plate (17).

8. A rice cultivation device according to claim 7, characterized in that: The through hole (18) is fitted with a core block (27) in a sliding seal; the core block (27) has a T-shaped groove (28) inside; and an elastic strip (29) is fixedly installed between the lower end of the core block (27) and the cultivation tray (5).

9. A method for cultivating rice, wherein the method uses the rice cultivation apparatus according to any one of claims 1-8, characterized in that: This includes the rice seed germination stage and the seedling growth stage; The rice seed germination stage includes the following steps: A1. Place nutrient soil and rice seeds inside the cultivation tube (6) of each cultivation module, so that the nutrient soil is laid on the upper side of the cultivation tray (5) and the nutrient soil covers the rice seeds. A2. Place the support frame (2) between a pair of connecting longitudinal plates (1) on the bank of the paddy field, and align the connecting column (3) with the slot (4) to set up each cultivation module on the paddy field. A3. Control the support frame (2) to be in a high position, so that each cultivation tray (5) is level with the paddy field water surface, and continuously transport water to the nutrient soil inside the cultivation tube (6) through the water absorption column (7) until the rice seeds germinate.

10. A rice cultivation method according to claim 9, characterized in that: The seedling growth stage includes the following steps: B1. After the seeds germinate and the seedlings reach 15-30cm, control the height of the support frame (2) to lower, submerge each cultivation module in the water, and immerse the bottom of the cultivation tray (5) and cultivation cylinder (6) in the bottom mud. B2. The buoyancy ring (13) is driven by the buoyancy to raise the baffle (12), which causes the root extension hole (8) to be in an open state and extends the height of the cultivation tube (6); B3. Nutrient solution and air are periodically transported to the annular trough (16) of each cultivation module through the flow guide component, so as to promote the upward and point-to-point transport of nutrients and oxygen to the soil around the rice roots.

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