Sapling maintenance device for walnut planting

Abstract

The invention relates to the technical field of sapling maintenance devices, in particular to a sapling maintenance device for walnut planting, which comprises a cultivation box, the cultivation box is filled with soil, a group of vertical plates is arranged on each of two sides of the upper end face of the cultivation box, and each group of vertical plates comprises two vertical plates. The two vertical plates are fixedly connected to the two sides of the upper end face of the cultivation box respectively, a longitudinal deep cultivation assembly is arranged between each set of vertical plates, the longitudinal deep cultivation assemblies are used for providing downward resistance-free growth space for the straight roots of walnut seedlings, and each longitudinal deep cultivation assembly comprises a deep cultivation pipe; a plurality of wedge blocks are uniformly and fixedly connected to the inner wall of the deep cultivation pipe at intervals, the interior of the deep cultivation pipe is used for planting walnut seedlings, and a water supply assembly is arranged at the lower end of the cultivation box. Compared with the prior art, the problems existing in the aspects of walnut sapling straight root longitudinal guiding, stable water supply and subsequent transplanting facilitating in the prior art are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of seedling maintenance devices, in particular to a seedling maintenance device for walnut planting. Background Art

[0002] Walnut is a typical taproot fruit tree with a well-developed taproot and strong vertical rooting ability. It thrives in deep, well-drained, and aerated soil. During the cultivation of walnut seedlings, the root structure of the seedlings has a significant impact on their subsequent transplant survival rate, growth and development, and stress resistance. The growth of the taproot system, in particular, directly determines the plant's rooting depth and ability to obtain water and fertilizer.

[0003] However, in existing seedling raising devices or seedling raising methods, the following problems are prevalent: First, existing seedling raising containers mostly use shallow seedling trays or uniform flat seedling raising boxes, which are difficult to provide walnut seedlings with vertical downward space adapted to their taproot growth characteristics. As a result, the taproots encounter bottom resistance during growth and become bent and entangled, affecting root development. In severe cases, it may even cause root breakage, significantly reducing the survival rate of seedlings when transplanted. Although some seedling raising methods increase the depth of the seedling raising box to accommodate the downward growth of the taproots of walnut seedlings, such methods often result in a significant increase in the amount of soil filled in the seedling raising box, which not only increases the cost of seedling raising, but also increases the overall weight of the device and the difficulty of transportation. Secondly, most current seedling raising devices have relatively simple water management structures, often supplying water through surface sprinkler irrigation or bottom immersion, but lack precise regulation of soil moisture retention. Especially during the seedling raising process, uneven water supply can easily cause local water accumulation or water shortage, which not only affects the normal breathing of the root system, but also easily breeds diseases and reduces the quality of seedlings.

[0004] Furthermore, in order to solve the inconveniences in the prior art in longitudinally guiding the taproots of walnut seedlings, stabilizing water supply, and facilitating subsequent transplanting, we disclose a walnut seedling maintenance device for planting. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to propose a walnut seedling maintenance device for planting, so as to solve the problems existing in the prior art in longitudinal guidance of the taproots of walnut seedlings, stable water supply and convenience for subsequent transplanting.

[0006] Based on the above purpose, the present invention provides a walnut seedling maintenance device for planting, including a cultivation box, the interior of the cultivation box is filled with soil, a group of vertical plates are provided on both sides of the upper end surface of the cultivation box, each group of the vertical plates is provided with two, and the two vertical plates are respectively fixedly connected to the two sides of the upper end surface of the cultivation box, and a longitudinal deep cultivation component is provided between each group of the vertical plates, the longitudinal deep cultivation component is used to provide a downward resistance-free growth space for the taproot of the walnut seedling, the longitudinal deep cultivation component includes a deep cultivation tube, the inner wall of the deep cultivation tube is fixedly connected with a plurality of wedges at even intervals, and the interior of the deep cultivation tube is used for planting walnut seedlings; A water supply assembly is provided at the lower end of the incubator, and the water supply assembly includes a water suction box fixedly connected to the lower end of the incubator. The interior of the water suction box is used to store the liquid required for the soil inside the incubator, and the water supply assembly is used to keep the soil inside the incubator at an appropriate moisture content.

[0007] Preferably, the upper end of the deep incubation tube is fixedly connected to a slide, and connecting rods are provided on both sides of the lower end of the deep incubation tube. The connecting rods are L-shaped, and the middle part of the connecting rods is fixedly connected to a rotating shaft. The connecting rods are rotatably connected to the incubator through the rotating shaft.

[0008] Preferably, the upper and lower ends of the connecting rod are engaged and rotatably connected to rollers, and triangular plates are fixedly connected on both sides of the lower end of the outer wall of the deep-incubation tube. The end face of the triangular plate close to the connecting rod is inclined, and the end face of the triangular plate close to the connecting rod is in contact with the roller at the upper end of the connecting rod.

[0009] Preferably, a push plate is provided on the side of the lower end of the connecting rod close to the deep incubation tube, and the surfaces of the deep incubation tube and the push plate are both porous structures for moisture transmission. The end face of the push plate close to the connecting rod is in contact with the roller at the lower end of the connecting rod, and one end of the end face of the push plate close to the deep incubation tube is fixedly connected to a reset spring, and the reset spring is fixedly connected to the incubation box.

[0010] Preferably, an upper inner wall of the incubator is provided with an accommodation groove, and the reset spring is arranged inside the accommodation groove.

[0011] Preferably, the opposite surfaces of each group of vertical plates are provided with sliding grooves, and the two ends of the slide are slidably connected to the vertical plates through the sliding grooves. A telescopic spring is fixedly connected to one side of the slide, and one end of the telescopic spring is fixedly connected to a limiting column.

[0012] Preferably, through holes are formed at the upper and lower ends of one of the vertical plates in each group of the vertical plates, and the limiting column is clamped inside the through hole.

[0013] Preferably, a water absorption pad is provided at the upper end of the water absorption box, the incubation box is a hollow structure, the upper end of the water absorption pad is in contact with the soil inside the incubation box, and the lower end of the water absorption pad is evenly spaced and fixedly connected with multiple water absorption columns, and the lower ends of the multiple water absorption columns all extend into the interior of the water absorption box.

[0014] Preferably, a floating plate is provided inside the water suction box, one side of the floating plate is fixedly connected to a connecting frame, and the middle part of the connecting frame is fixedly connected to a baffle.

[0015] Preferably, a water storage tank is fixedly connected to the middle of one end face of the incubator, a connecting pipe is fixedly connected to the lower end of the water storage tank, the lower end of the connecting pipe is connected to the water suction box, and the connection height between the connecting pipe and the water suction box is higher than the lowest end of the water suction column, when the float is at the highest point, the baffle can block the connection between the connecting pipe and the water suction box, the end of the float close to the baffle is longitudinally slidably connected to the water suction box, a drain pipe is fixedly connected to one side of the lower end of the water suction box, and a switch valve is installed on the drain pipe.

[0016] Beneficial effects of the present invention: Effectively adapt to the vertical growth characteristics of walnut seedlings' taproots, reducing the amount of soil used for seedling cultivation and the burden of transportation: By arranging a longitudinally sliding deep cultivation component in the cultivation box, a deep cultivation tube structure is adopted to provide the taproots of walnut seedlings with independent space to extend freely downward, thereby avoiding bending, coiling, knotting and other problems caused by bottom obstruction encountered by the roots during growth, improving the root development condition from the source, and improving the quality of the seedlings and the survival rate of transplantation. Especially in the growth process of the seedlings, the deep cultivation tube is driven to rise step by step by the slide frame, and the push plate is driven by the connecting rod structure to replenish the soil to the roots layer by layer. In actual use, the rising height of the deep cultivation tube can be adjusted according to actual conditions, so as to meet the growth space requirement of the seedling roots without increasing the overall depth of the cultivation box, significantly reducing the amount of soil filling, reducing the seedling cultivation cost and the weight of the box, and solving the cost and transportation difficulty problems caused by having to deepen the seedling box to adapt to the growth of taproots in the prior art.

[0017] Build a passive responsive water supply system to achieve precise and stable water control effects: An independent water absorption tank is set up under the incubation box, and a continuous capillary water supply path is constructed through water absorption columns and water absorption pads, so that water can penetrate evenly from the bottom to the entire layer of soil, realizing non-powered stable water supply. At the same time, a float-baffle linkage structure is used to form a passive closed-loop control water replenishment mechanism based on liquid level changes. When the water level in the water absorption tank is too high, the float automatically floats up and drives the baffle to close the water inlet to prevent excessive water supply. When the water level drops, the water supply path is reopened to ensure continuous water supply. This system avoids the coexistence of "local waterlogging and local drought" common in traditional sprinkler irrigation or bottom immersion water supply, effectively inhibits the occurrence of diseases, ensures balanced absorption of the root system, and helps to improve the overall quality and survival rate of seedlings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 Schematic diagram of the internal three-dimensional structure of the present invention; Figure 3 This is a schematic diagram of the three-dimensional structure of the longitudinal deep-breeding component of the present invention; Figure 4 This is a schematic diagram of the internal three-dimensional structure of the deep culture tube of the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the water supply component of the present invention; Figure 6 This is a schematic diagram of the internal three-dimensional structure of the water suction box of the present invention; Figure 7 for Figure 6 Enlarged view of point A in the middle.

[0020] The markings in the figure are: 1. Incubation box; 2. Water suction box; 3. Vertical plate; 4. Slide; 5. Slide; 6. Deep incubation tube; 7. Water storage tank; 8. Drain pipe; 9. Water absorption pad; 10. Water absorption column; 11. Wedge; 12. Connecting pipe; 13. Float; 14. Telescopic spring; 15. Limit column; 16. Triangle plate; 17. Connecting rod; 18. Roller; 19. Push plate; 20. Rotating shaft; 21. Return spring; 22. Baffle; 23. Connecting frame. DETAILED DESCRIPTION

[0021] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to specific embodiments.

[0022] It should be noted that, unless otherwise defined, the technical or scientific terms used in the present invention should have the usual meanings understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0023] like Figures 1 to 7 As shown, a walnut seedling maintenance device for planting includes a cultivation box 1, the interior of the cultivation box 1 is filled with soil, a group of vertical plates 3 are provided on both sides of the upper end surface of the cultivation box 1, each group of vertical plates 3 is provided with two, and the two vertical plates 3 are respectively fixedly connected to the two sides of the upper end surface of the cultivation box 1, and a longitudinal deep cultivation component is provided between each group of vertical plates 3. The longitudinal deep cultivation component is used to provide a downward resistance-free growth space for the taproot of the walnut seedlings. The longitudinal deep cultivation component includes a deep cultivation tube 6, and a plurality of wedge blocks 11 are evenly spaced and fixedly connected to the inner wall of the deep cultivation tube 6. The interior of the deep cultivation tube 6 is used for planting walnut seedlings.

[0024] The upper end of the deep breeding tube 6 is fixedly connected to the slide 5, and the lower end of the deep breeding tube 6 is provided with a connecting rod 17 on both sides. The connecting rod 17 is L-shaped, and the middle part of the connecting rod 17 is fixedly connected to the rotating shaft 20. The connecting rod 17 is rotatably connected to the incubator 1 through the rotating shaft 20. The upper and lower ends of the connecting rod 17 are engaged and rotatably connected with the roller 18. The lower end of the outer wall of the deep breeding tube 6 is fixedly connected with a triangular plate 16 on both sides. The end face of the triangular plate 16 close to the connecting rod 17 is inclined, and the end face of the triangular plate 16 close to the connecting rod 17 is in contact with the roller 18 at the upper end of the connecting rod 17. The lower end of the connecting rod 17 is provided with a push plate 19 on the side close to the deep breeding tube 6. The surfaces of the deep breeding tube 6 and the push plate 19 are both porous structures for water The transmission is divided into two parts, and the end face of the push plate 19 close to the connecting rod 17 contacts the roller 18 at the lower end of the connecting rod 17. One end of the end face of the push plate 19 close to the deep incubation tube 6 is fixedly connected with a return spring 21. The return spring 21 is fixedly connected to the incubator 1. The upper inner wall of the incubator 1 is provided with a placement groove, and the return spring 21 is arranged inside the placement groove. The opposite surfaces of each group of vertical plates 3 are provided with a slide groove 4, and the two ends of the slide 5 are slidably connected to the vertical plates 3 through the slide groove 4. One side of the slide 5 is fixedly connected with a telescopic spring 14, and one end of the telescopic spring 14 is fixedly connected to the limiting column 15. The upper and lower ends of one of the vertical plates 3 in each group of vertical plates 3 are provided with a through hole, and the limit column 15 is stuck inside the through hole.

[0025] The seeds or seedlings of the walnut tree are placed at the upper end of the deep cultivation tube 6. After a period of growth, their taproots will gradually take root downward along the inside of the deep cultivation tube 6. As the seedlings grow taller and the root system extends, in order to prevent the roots from bending and winding in the original soil layer due to the bottom restriction, the user can push the slide 5 to slide upward in the slide groove 4 on the vertical plate 3, thereby driving the deep cultivation tube 6 to lift upward as a whole; As the deep cultivation tube 6 rises, a new cavity area will be formed between its bottom and the bottom of the cultivation box 1. At this time, the push plate 19 arranged under the deep cultivation tube 6 will automatically move up under the cooperation of the connecting rod 17 and the roller 18 to complete the soil replenishment. Specifically, the middle part of the connecting rod 17 is connected to the cultivation box 1 by the rotation shaft 20. The connecting rod 17 is an L-shaped structure, and the roller 18 engaged at its upper end always rests on the inclined triangular plate 16 provided on the outer wall of the deep cultivation tube 6. When the deep cultivation tube 6 moves up, the triangular plate 16 also rises accordingly, and pushes the roller 18 at the upper end of the connecting rod 17 through its inclined end surface, driving the connecting rod 17 to rotate counterclockwise around the rotating shaft 20, so that the roller 18 at the lower end of the connecting rod 17 pushes the push plate 19 in contact with it to move upward, and finally pushes the soil at the bottom of the cultivation box 1 slowly into the vacant area at the bottom of the deep cultivation tube 6, providing a support medium for the continued growth of the taproot. In order to ensure that the push plate 19 can return to its initial position after completing the soil filling action, a return spring 21 is fixedly connected to its one end face, and the other end of the spring is fixedly connected to the inner wall of the incubator 1. When the push plate 19 moves up, the return spring 21 is stretched to generate elastic potential energy. After the structure is reset, it automatically contracts and pushes the push plate 19 to reset, completing the cycle. In order to ensure that the return spring 21 can work stably for a long time in a humid soil environment and avoid soil clogging or corrosion of the spring affecting its elastic performance, an accommodation groove is opened on the inner wall of the incubator 1. The return spring 21 is arranged inside the accommodation groove. The arrangement of the accommodation groove not only protects the spring from soil interference, but also optimizes the internal space layout, improves the neatness of the structure and the reliability of the device. In addition, in order to adapt to the height adjustment requirements of the deep cultivation tube 6 at different seedling stages, the two ends of the slide 5 are slidably connected in the slide groove 4, and a telescopic spring 14 is fixedly connected to one side of the slide 5, and a limit column 15 is provided at its free end. The limit column 15 can be inserted into the through hole opened on the vertical plate 3 to achieve multi-level limitation and stable support for the rising height of the deep cultivation tube 6. Through the coordinated use of the above-mentioned structure, the deep cultivation space can be flexibly adjusted according to the growth requirements of the seedling body, and the soil can be gradually filled downwards, which not only meets the depth requirements of the taproot growth of the walnut seedlings, but also effectively reduces the soil consumption, device weight and seedling cultivation cost caused by deepening the whole box.

[0026] like Figures 1 to 7 As shown, a water supply component is provided at the lower end of the cultivation box 1, which is used to continuously provide the required moisture to the soil layer inside the box, so as to maintain the stable moisture environment required by the walnut seedlings during the seedling stage, and avoid problems such as seedling wilting due to soil drying or root growth stagnation due to lack of water. The water supply component includes a water suction box 2 arranged at the bottom of the cultivation box 1. The water suction box 2 can be made of polypropylene PP or polyethylene PE with good sealing properties, and is used to accommodate clean water, nutrient solution or special solution for seedling cultivation.

[0027] A layer of absorbent pad 9 is fixedly provided at the upper end of the water absorption box 2. The absorbent pad 9 can be made of hydrophilic polyester fiber non-woven fabric, polypropylene felt and other materials, and has good water retention and permeability. Its upper end is in direct contact with the soil layer filled inside the cultivation box 1, forming a stable water seepage interface, so that the water absorption process can be completed naturally by capillary action without the need for additional power devices.

[0028] The lower end of the absorbent pad 9 is evenly spaced and fixedly connected with multiple absorbent columns 10. The absorbent columns 10 are hollow tubular structures. Their materials can be hydrophilic cotton core, foam rope core or soft capillary tubes. They have good liquid siphoning and capillary climbing capabilities. Multiple absorbent columns 10 penetrate the bottom plate of the incubator 1 from top to bottom and extend into the liquid layer of the absorbent box 2, forming a series of water conduction paths, so that the liquid is continuously transmitted to the absorbent pad 9 through the absorbent columns 10, and then evenly distributed to the soil layer in the incubator 1, thereby maintaining the soil in a suitable moist state.

[0029] To achieve intelligent water level regulation and prevent oversupply, a floating plate 13 is installed inside the suction tank 2. Made of lightweight plastic, such as foamed PP, its buoyancy controls water level fluctuations. As the liquid level in the suction tank 2 rises, the floating plate 13 rises with it. A baffle 22 is fixedly connected to one side of the floating plate via a connecting bracket 23. Connecting bracket 23 is a rigid connector with a hinged portion in the middle for adjusting the angular position of baffle 22.

[0030] The baffle 22 is used to block the outlet of the connecting pipe 12. One end of the connecting pipe 12 is connected to the water suction tank 2, and the other end is connected to the water storage tank 7 located in the middle of the side end face of the incubator 1. The water storage tank 7 is a backup water source. When the liquid level in the water suction tank 2 falls below a preset value, water can be automatically replenished into the water suction tank 2 through the connecting pipe 12.

[0031] In order to achieve automatic opening and closing control, the connecting pipe 12 is arranged at a height higher than the lowest end of the water suction column 10 at the outlet where it is connected to the water suction box 2; when the liquid level in the water suction box 2 rises to near saturation, the float 13 will also float to the highest point. At this time, the baffle 22 is driven by the connecting frame 23 to accurately block the outlet of the connecting pipe 12, thereby preventing further water replenishment. When the water level drops, the float 13 sinks, and the baffle 22 automatically opens the water replenishment port to complete the next liquid replenishment process.

[0032] To ensure long-term operational stability, the floating plate 13 and the water suction box 2 are connected by a longitudinal sliding connection, that is, the floating plate 13 can be freely raised and lowered in the vertical direction, and its guide edge is provided with a guide groove structure to prevent lateral drift or jamming, ensuring accurate and reliable movement.

[0033] In addition, a drain pipe 8 is fixedly connected to one side of the bottom of the water suction box 2. The drain pipe 8 is a cleaning and liquid replacement channel, and a switch valve is installed on it for quickly draining the liquid when the water suction liquid needs to be replaced or the inside of the box needs to be cleaned. The switch valve can be a manual knob type or a fast ball valve type structure with good sealing performance and convenient operation.

[0034] It should be understood by those skilled in the art that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Within the scope of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0035] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A walnut seedling maintenance device for planting, comprising a cultivation box (1), the interior of the cultivation box (1) being filled with soil, characterized in that: A group of vertical plates (3) are provided on both sides of the upper end surface of the cultivation box (1), and each group of vertical plates (3) is provided with two. The two vertical plates (3) are respectively fixedly connected to both sides of the upper end surface of the cultivation box (1). A longitudinal deep cultivation component is provided between each group of vertical plates (3), and the longitudinal deep cultivation component is used to provide a downward resistance-free growth space for the taproot of the walnut seedlings. The longitudinal deep cultivation component includes a deep cultivation tube (6), and the inner wall of the deep cultivation tube (6) is fixedly connected with a plurality of wedges (11) at even intervals. The interior of the deep cultivation tube (6) is used for planting walnut seedlings; The lower end of the cultivation box (1) is provided with a water supply assembly, the water supply assembly comprising a water suction box (2) fixedly connected to the lower end of the cultivation box (1), the interior of the water suction box (2) being used to store liquid required by the soil inside the cultivation box (1), and the water supply assembly being used to maintain the soil inside the cultivation box (1) at an appropriate moisture content.

2. A walnut planting seedling maintenance device according to claim 1, characterized in that: The upper end of the deep incubation tube (6) is fixedly connected to a slide (5), and connecting rods (17) are provided on both sides of the lower end of the deep incubation tube (6). The connecting rod (17) is L-shaped, and the middle part of the connecting rod (17) is fixedly connected to a rotating shaft (20). The connecting rod (17) is rotatably connected to the incubator (1) via the rotating shaft (20).

3. A walnut planting seedling maintenance device according to claim 2, characterized in that: The upper and lower ends of the connecting rod (17) are both engaged and rotatably connected to rollers (18), and both sides of the lower end of the outer wall of the deep incubation tube (6) are fixedly connected to triangular plates (16), and the end surface of one side of the triangular plate (16) close to the connecting rod (17) is inclined, and the end surface of one side of the triangular plate (16) close to the connecting rod (17) is in contact with the roller (18) at the upper end of the connecting rod (17).

4. A walnut planting seedling maintenance device according to claim 3, characterized in that: A push plate (19) is provided on the side of the lower end of the connecting rod (17) close to the deep incubation tube (6). The surfaces of the deep incubation tube (6) and the push plate (19) are both porous structures for water transmission. The end face of the push plate (19) close to the connecting rod (17) contacts the roller (18) at the lower end of the connecting rod (17). One end of the end face of the push plate (19) close to the deep incubation tube (6) is fixedly connected to a return spring (21), and the return spring (21) is fixedly connected to the incubator (1).

5. A walnut planting seedling maintenance device according to claim 4, characterized in that: The upper inner wall of the incubator (1) is provided with a placement groove, and the return spring (21) is arranged inside the placement groove.

6. A walnut planting seedling maintenance device according to claim 5, characterized in that: The opposite surfaces of each group of vertical plates (3) are provided with a slide groove (4), and the two ends of the slide (5) are slidably connected to the vertical plates (3) through the slide groove (4). A telescopic spring (14) is fixedly connected to one side of the slide (5), and one end of the telescopic spring (14) is fixedly connected to a limiting column (15).

7. A walnut planting seedling maintenance device according to claim 6, characterized in that: The upper and lower ends of one of the vertical plates (3) in each group of the vertical plates (3) are provided with through holes, and the limiting column (15) is clamped inside the through hole.

8. The walnut seedling maintenance device according to claim 7, characterized in that: A water absorption pad (9) is provided at the upper end of the water absorption box (2); the cultivation box (1) is a hollow structure; the upper end of the water absorption pad (9) is in contact with the soil inside the cultivation box (1); the lower end of the water absorption pad (9) is evenly spaced and fixedly connected to a plurality of water absorption columns (10); the lower ends of the plurality of water absorption columns (10) all extend into the interior of the water absorption box (2).

9. The walnut seedling maintenance device according to claim 8, characterized in that: A floating plate (13) is provided inside the water suction box (2), a connecting frame (23) is fixedly connected to one side of the floating plate (13), and a baffle (22) is fixedly connected to the middle of the connecting frame (23).

10. The walnut seedling maintenance device according to claim 9, characterized in that: A water storage tank (7) is fixedly connected to the middle of one end face of the incubator (1), and a connecting pipe (12) is fixedly connected to the lower end of the water storage tank (7). The lower end of the connecting pipe (12) is connected to the water suction box (2), and the connection height between the connecting pipe (12) and the water suction box (2) is higher than the lowest end of the water suction column (10). When the floating plate (13) is at the highest point, the baffle (22) can block the connection between the connecting pipe (12) and the water suction box (2). One end of the floating plate (13) close to the baffle (22) is longitudinally slidably connected to the water suction box (2). A drain pipe (8) is fixedly connected to one side of the lower end of the water suction box (2), and a switch valve is installed on the drain pipe (8).

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