Breeding device for planting carya illinoensis

Abstract

The invention relates to the technical field of fruit tree cultivation, and discloses a breeding device for planting carya illinoensis, which comprises a nursery pond, a water storage pipe is fixedly mounted in the nursery pond, a plurality of culture pipes are fixedly mounted on the surface of the water storage pipe, and each culture pipe is vertically arranged on the upper surface of the water storage pipe; a water supply pipe is fixedly installed at one end of the nursery pond and communicated with the water storage pipe, and a drainage pipe is fixedly installed at the other end of the nursery pond and communicated with an inner cavity of the nursery pond. According to the breeding device, the culture tube is arranged, the walnut seeds are placed at the upper end of the culture tube, the lower sides of the walnut seeds make contact with the culture solution in the tube, it is guaranteed that the walnut seeds can absorb sufficient water, nutrition and oxygen, and due to the fact that the nutrient solution in the culture tube is large in amount, the liquid level declines slowly, and frequent liquid supplementing is not needed; the problem that the seedling raising temperature is affected by frequent water replenishing is solved, and the seedling raising efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of fruit tree cultivation, and particularly relates to a breeding device for cultivating Carya illinoinensis. Background Art

[0002] Carya illinoinensis is an economic tree species with good development momentum in recent years. It has multiple uses and high economic value. In order to accelerate the popularization process of Carya illinoinensis, it is first necessary to solve the problems of seedling and improved variety breeding in production.

[0003] In the prior art, a patent document with the publication number of CN112493049B discloses a Carya illinoinensis seedling cultivation and planting method with high survival rate, including the following steps: (1) Seed treatment: Select Carya illinoinensis seeds with plump kernels, no mildew and insect damage. Place the selected Carya illinoinensis seeds in a cool place to dry naturally for 2 days, then soak them in a plant hormone for 7 days, and dry them; (2) Germination promotion and seedling raising: Promote the germination of the soaked Carya illinoinensis seeds. Transplant the germinated Carya illinoinensis seeds into a Carya illinoinensis seedling cultivation device, and dibble 1 seed in the center of each seedling raising pot in the Carya illinoinensis seedling cultivation device. Nutrient soil is placed in the seedling raising pot; (3) Field transplantation: Select an open field nursery with sandy red soil and small particle gravel soil; (4) Seedling stage management: Set up a shade shed, promptly remove dead branches and uproot diseased and dead plants; The Carya illinoinensis seedling cultivation and planting method provided by the invention has a high germination rate of Carya illinoinensis seeds and improves the survival rate of Carya illinoinensis seedling cultivation and planting.

[0004] After research, at a germination promotion temperature of 30 - 35 °C, under the condition that Carya illinoinensis seeds obtain sufficient moisture and oxygen, the germination rate can be significantly increased and the seedling cultivation time can be reduced. See the reference: Zhao Lei. Research on the High-efficiency Propagation Technology of Carya illinoinensis Seedlings [D]. Anhui Agricultural University, 2020. DOI: 10.26919 / d.cnki.gannu.2020.000562. However, after the temperature rises, the water evaporation rate increases, the number of water replenishment times increases, and watering will reduce the germination promotion temperature, restricting the germination of seeds. Especially for large-scale seedling cultivation production, based on this, ordinary seedling cultivation devices have the problem that frequent water replenishment affects the seedling cultivation temperature, resulting in a long seedling cultivation time and a low germination rate, hindering the development of the industry. Summary of the Invention

[0005] The purpose of the present invention is to solve the problem in the prior art that frequent water replenishment affects the seedling cultivation temperature, and to propose a breeding device for cultivating Carya illinoinensis.

[0006] To achieve the above object, the present invention adopts the following technical solution: A breeding device for pecan cultivation, including a seedling-raising pool, inside which a water storage pipe is fixedly installed. On the surface of the water storage pipe, a number of culture pipes are fixedly installed, and each culture pipe is vertically arranged on the upper surface of the water storage pipe. At one end of the seedling-raising pool, a water supply pipe is fixedly installed, and the water supply pipe is communicated with the water storage pipe. At the other end of the seedling-raising pool, a drain pipe is fixedly installed, and the drain pipe is communicated with the inner cavity of the seedling-raising pool; The pecan seeds are placed at the upper end of the culture pipe. A water-absorbing sleeve is sleeved on the upper end of the culture pipe. A clamping assembly is arranged outside the culture pipe. By clamping the water-absorbing sleeve with the clamping assembly, the inner cavity of the water-absorbing sleeve is reduced, and the pecan seeds are wrapped and fixed at the upper end of the culture pipe by the contracted water-absorbing sleeve, ensuring that the pecan seeds can continuously absorb nutrient solution for a long time without frequent liquid replenishment, solving the problem that frequent water replenishment affects the seedling-raising temperature, and thus improving the seedling-raising efficiency.

[0007] Preferably, the breeding device further includes a liquid storage tank filled with culture solution. The water supply pipe is communicated with the liquid storage tank. The upper ends of the several culture pipes are on the same horizontal plane, and the liquid level in the liquid storage tank is on the same horizontal plane as the upper end surface of the culture pipes. The excess culture solution in the liquid storage tank overflows from the upper ends of the culture pipes and then flows into the seedling-raising pool. During the process of the loss of the culture solution in the culture pipes, the liquid levels in the liquid storage tank and the culture pipes drop synchronously. Since there is more liquid stored in the liquid storage tank, the dropping speed of the liquid level in the culture pipes is delayed.

[0008] Preferably, the material of the water-absorbing sleeve is non-woven fabric. The particle size of the pecan seeds is larger than the diameter of the culture pipe. When the pecan seeds are placed at the upper end of the culture pipe, the suture line on the surface of the pecan seeds is perpendicular to the upper end surface of the culture pipe. The inner diameter of the water-absorbing sleeve is larger than the particle size of the pecan seeds. During the germination process, it is beneficial to the growth of the roots of the pecan seeds. The roots extend into the culture pipe from the suture line and can absorb the nutrient solution with the dropping liquid level, and the roots grow longer and more developed.

[0009] Preferably, the clamping assembly includes a plurality of unit clips, and the plurality of unit clips are connected in series by a connecting rope. When the connecting rope is tightened and straightened, the distances between the unit clips are equal.

[0010] Specifically, the unit clip includes a handle, a fixed toothed plate and a movable pressure rod. An installation seat is fixedly installed at the end of the handle. The fixed toothed plate is fixedly connected to the installation seat. The movable pressure rod is rotatably connected to the installation seat through a rotating shaft. The handle is fixedly connected to the connecting rope. A torsion spring is arranged between the end of the rotating shaft and the surface of the installation seat. Under the elastic force of the torsion spring, the movable pressure rod presses tightly on the surface of the fixed toothed plate, so that the water-absorbing sleeve is clamped between the movable pressure rod and the fixed toothed plate. The unit clip clamps the water-absorbing sleeve, playing a role in fixing the pecan seeds at a specific angle.

[0011] Preferably, the unit clip further includes an insertion rod, the top end of the insertion rod is fixedly connected to the mounting seat, the fixed toothed plate is fixed on the surface of the insertion rod, a socket is fixedly installed on the surface of each culture tube, an insertion hole is formed in the upper surface of the socket, and the bottom end of the insertion rod is tightly inserted into the insertion hole, and each unit clip corresponds to a culture tube one by one.

[0012] Preferably, the breeding device further includes a guide rail plate, a T-shaped chute is formed in the side surface of the guide rail plate, a T-shaped slider is fixedly installed at the end of the handle away from the mounting seat, and the T-shaped slider is slidably installed in the T-shaped chute of the guide rail plate, so that a plurality of unit clips are assembled with the guide rail plate. When the guide rail plate is lifted upward, a plurality of unit clips, the water absorption sleeves clamped by the unit clips, and the walnut seeds wrapped in the water absorption sleeves are lifted together with the guide rail plate. The unit clips are sequentially slid and separated from the guide rail plate, and the insertion rod is inserted into the ground trench to transplant the walnut seeds. Before covering the soil, under the action of the insertion rod, the walnut seedlings can stand in the ground trench, preventing the new buds or roots from breaking, improving the survival rate, and also facilitating the subsequent covering of the soil.

[0013] The present invention has the following beneficial effects: 1. The breeding device proposed by the present invention, by setting the culture tube, the walnut seeds are placed at the upper end of the culture tube, and the lower side of the walnut seeds is in contact with the nutrient solution in the tube, ensuring that the walnut seeds can absorb sufficient water, nutrients and oxygen. Since the amount of nutrient solution in the culture tube is large and the liquid level drops slowly, there is no need to frequently replenish the liquid, solving the problem that frequent water replenishment affects the seedling raising temperature, thereby improving the seedling raising efficiency.

[0014] 2. The breeding device proposed by the present invention, by sleeving a water absorption sleeve at the upper end of the culture tube, the water absorption sleeve can place the walnut seeds at a certain angle on the top of the culture tube. Here, the certain angle means that the suture line on the surface of the walnut seed is perpendicular to the upper end surface of the culture tube. This design is beneficial to the growth of the roots of the walnut seeds during the germination process. The roots extend into the culture tube from the suture line and can absorb the nutrient solution with the drop of the liquid level, and the roots grow longer and more developed; Regularly replenish the liquid into the liquid storage tank, and each culture tube can be filled with the nutrient solution. The excess nutrient solution overflows from the upper end of the culture tube to moisten the water absorption sleeve, ensuring the wetness of the surface of the walnut seeds. In the process of large-scale breeding, the number of culture tubes is huge, and this design makes the water replenishment uniform and convenient.

[0015] 3. For the breeding device proposed by the present invention, walnut seeds are placed at the upper end of each culture tube, and the walnut seeds are fixed by a water-absorbing sleeve and a unit clip. By setting a guide rail plate, a plurality of unit clips are assembled with the guide rail plate. During the transplantation and cultivation process, when the guide rail plate is lifted, the walnut seeds in each culture tube can be lifted. Compared with the prior art of burying seeds in fine sand for seedling raising, the walnut seedlings bred by the present invention have roots that will not entangle with each other, and there is no situation of broken roots during plant division, greatly improving the survival rate. In addition, since a plurality of unit clips are connected in series by a connecting rope, they can be transplanted in sequence, providing convenience for the mixed planting of multiple varieties of walnuts.

[0016] 4. For the breeding device proposed by the present invention, when transplanting walnut seeds, the unit clips are sequentially slid and separated from the guide rail plate. By inserting the insertion rod into the ground groove, before covering the soil, under the action of the insertion rod, the walnut seedlings can stand in the ground groove, preventing the new buds or roots from breaking, improving the survival rate, and also providing convenience for subsequent soil covering. A plurality of unit clips are connected in series by a connecting rope. When the connecting rope is tightened and straightened, the distances between the unit clips are equal. The connecting rope can be used to control the plant spacing of transplantation, thus achieving the effect of convenient transplantation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural schematic diagram of the breeding device proposed by the present invention; Figure 2 is Figure 1 an enlarged schematic diagram of the structure at A in Figure 3 is a three-dimensional structural schematic diagram of a partially cut-away seedling raising pool proposed by the present invention; Figure 4 is a three-dimensional structural schematic diagram of the unit clip proposed by the present invention Figure 1 ; Figure 5 is a three-dimensional structural schematic diagram of the unit clip proposed by the present invention Figure 2 ; Figure 6 is a schematic diagram of the connection between the seedling raising pool and the liquid storage tank proposed by the present invention; Figure 7 is a schematic diagram of the insertion rod inserted into the ground groove proposed by the present invention.

[0018] In the figure: 1 seedling raising pool, 2 water storage pipe, 3 culture tube, 4 water supply pipe, 5 drain pipe, 6 water-absorbing sleeve, 7 liquid storage tank, 8 connecting rope, 9 handle, 10 fixed tooth plate, 11 movable pressure rod, 12 mounting seat, 13 rotating shaft, 14 torsion spring, 15 insertion rod, 16 socket, 17 guide rail plate, 18 T-shaped slider, 19 walnut seed, 20 unit clip, 21 ground groove. DETAILED DESCRIPTION OF THE INVENTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0020] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0021] Refer to Figures 1 - 7 , a breeding device for pecan cultivation, including a seedling raising pool 1, a water storage pipe 2 is fixedly installed inside the seedling raising pool 1, a plurality of culture pipes 3 are fixedly installed on the surface of the water storage pipe 2, each culture pipe 3 is vertically arranged on the upper surface of the water storage pipe 2, a water supply pipe 4 is fixedly installed at one end of the seedling raising pool 1, the water supply pipe 4 is communicated with the water storage pipe 2, a drain pipe 5 is fixedly installed at the other end of the seedling raising pool 1, and the drain pipe 5 is communicated with the inner cavity of the seedling raising pool 1.

[0022] The pecan seeds 19 are placed at the upper end of the culture pipe 3, a water absorption sleeve 6 is sleeved on the upper end of the culture pipe 3, a clamping assembly is arranged outside the culture pipe 3, and the water absorption sleeve 6 is clamped by the clamping assembly, so that the inner cavity of the water absorption sleeve 6 is reduced, and the pecan seeds 19 are wrapped and fixed at the upper end of the culture pipe 3 by the contracted water absorption sleeve 6.

[0023] As Figure 6 shown, the breeding device further includes a liquid storage tank 7, the liquid storage tank 7 is filled with a culture solution, the water supply pipe 4 is communicated with the liquid storage tank 7, the upper ends of the plurality of culture pipes 3 are on the same horizontal plane, the liquid level in the liquid storage tank 7 is on the same horizontal plane as the upper end surface of the culture pipe 3, and the excess culture solution in the liquid storage tank 7 overflows from the upper end of the culture pipe 3 and then flows into the seedling raising pool 1.

[0024] Specifically, the material of the water absorption sleeve 6 is non-woven fabric, the particle size of the pecan seeds 19 is larger than the diameter of the culture pipe 3. When the pecan seeds 19 are placed at the upper end of the culture pipe 3, the suture line on the surface of the pecan seeds 19 is perpendicular to the upper end surface of the culture pipe 3, and the inner diameter of the water absorption sleeve 6 is larger than the particle size of the pecan seeds 19. Refer to Figure 2 , the suture line on the surface of the pecan seeds 19 refers to the docking place of the two shell halves of the pecan.

[0025] During use, the breeding device is arranged in a breeding room, and the room temperature of the breeding room is controlled at 30 °C. As Figure 6As shown, place the soaked walnut seeds 19 on top of the culture tube 3, then install the water absorption sleeve 6 and the clamping assembly, and inject the culture solution into the liquid storage tank 7. The nutrient elements of the nutrient solution are composed of more than a dozen macro and trace elements such as nitrogen, phosphorus, potassium, calcium, iron, magnesium, sulfur, boron, zinc, copper, molybdenum, and chlorine.

[0026] By sleeving the water absorption sleeve 6 on the upper end of the culture tube 3, the water absorption sleeve 6 can place the walnut seeds 19 at a certain angle on the top of the culture tube 3. Here, the certain angle means that the suture line on the surface of the walnut seeds 19 is perpendicular to the upper end surface of the culture tube 3. This design is beneficial to the root growth of the walnut seeds 19 during the germination process. The roots extend into the culture tube 3 from the suture line and can absorb the nutrient solution with the decreasing liquid level, and the roots grow longer and more developed. As the breeding time progresses, the temperature of the nutrient solution in the water storage pipe 2 reaches equilibrium with the room temperature of the breeding house. Refer to Figure 6 . When the nutrient solution in the culture tube 3 is evaporated or absorbed, the nutrient solution in the liquid storage tank 7 and the water storage pipe 2 will automatically supplement the culture tube 3. During the process of the loss of the culture solution in the culture tube 3, the liquid levels in the liquid storage tank 7 and the culture tube 3 drop synchronously. Since the nutrient solution in the liquid storage tank 7 has a large storage capacity, the dropping speed of the liquid level in the culture tube 3 is delayed, enabling the walnut seeds 19 to absorb the nutrient solution for a long time.

[0027] Regularly replenish the liquid in the liquid storage tank 7, and the culture tubes 3 can be filled with the nutrient solution. The excess nutrient solution overflows from the upper end of the culture tube 3 to moisten the water absorption sleeve 6, ensuring the moisture on the surface of the walnut seeds 19. During the large-scale breeding process, the number of culture tubes 3 is huge, and this design makes the water replenishment uniform and convenient.

[0028] The breeding device proposed by the present invention, by setting the culture tube 3, places the walnut seeds 19 at the upper end of the culture tube 3, and the lower side of the walnut seeds 19 is in contact with the culture solution in the tube, ensuring that the walnut seeds 19 can absorb sufficient water, nutrients, and oxygen. Since the amount of nutrient solution in the culture tube 3 is large and the liquid level drops slowly, it is not necessary to replenish the liquid frequently, solving the problem that frequent water replenishment affects the seedling raising temperature, thereby improving the seedling raising efficiency.

[0029] In this embodiment, as Figure 4 、 Figure 5 shown, the clamping assembly includes a plurality of unit clips 20, and the plurality of unit clips 20 are connected in series by a connecting rope 8. When the connecting rope 8 is tightened and straightened, the distances between the unit clips 20 are equal.

[0030] The unit clip 20 includes a handle 9, a fixed tooth plate 10 and a movable pressure rod 11. An installation seat 12 is fixedly installed at the end of the handle 9. The fixed tooth plate 10 is fixedly connected to the installation seat 12. The movable pressure rod 11 is rotatably connected to the installation seat 12 through a rotating shaft 13. The handle 9 is fixedly connected to a connecting rope 8. Among them, a torsion spring 14 is arranged between the end of the rotating shaft 13 and the surface of the installation seat 12. Under the elastic force of the torsion spring 14, the movable pressure rod 11 presses tightly on the surface of the fixed tooth plate 10, so that the water absorption sleeve 6 is clamped in the area between the movable pressure rod 11 and the fixed tooth plate 10.

[0031] The unit clip 20 further includes an insertion rod 15. The top end of the insertion rod 15 is fixedly connected to the installation seat 12. The fixed tooth plate 10 is fixed on the surface of the insertion rod 15. A socket 16 is fixedly installed on the surface of each culture tube 3. An insertion hole is provided on the upper surface of the socket 16. The bottom end of the insertion rod 15 is tightly fitted and inserted into the insertion hole.

[0032] Reference Figure 3 、 Figure 4 The breeding device further includes a guide rail plate 17. A T-shaped sliding groove is provided on the side surface of the guide rail plate 17. A T-shaped slider 18 is fixedly installed at one end of the handle 9 away from the installation seat 12. The T-shaped slider 18 is slidably installed into the T-shaped sliding groove of the guide rail plate 17, so that a plurality of unit clips 20 are assembled with the guide rail plate 17.

[0033] Lift the guide rail plate 17 upward. A plurality of unit clips 20, the water absorption sleeves 6 clamped by the unit clips 20 and the walnut seeds 19 wrapped in the water absorption sleeves 6 are lifted together with the guide rail plate 17. Slide and separate the unit clips 20 from the guide rail plate 17 in sequence. Insert the insertion rod 15 into the ground groove 21 to transplant the walnut seeds 19. Reference Figure 7 。

[0034] A walnut seed 19 is placed at the upper end of each culture tube 3. Each culture tube 3 uses a water absorption sleeve 6 and a unit clip 20 to fix the walnut seed 19. By setting the guide rail plate 17, a plurality of unit clips 20 are assembled with the guide rail plate 17. During the process of transplanting and cultivating, lift the guide rail plate 17, and the walnut seeds 19 in each culture tube 3 can be lifted. Compared with the prior art of burying the seeds in fine sand for seedling raising, the walnut seedlings bred by the present invention have roots that will not entangle with each other, there is no situation of broken roots during plant division, the roots are intact, and the survival rate is greatly improved.

[0035] The breeding device proposed by the present invention, when transplanting walnut seeds 19 by setting the insertion rod 15, sequentially slides and separates the unit clips 20 from the guide rail plate 17, and inserts the insertion rod 15 into the ground groove 21. Before covering the soil, under the action of the insertion rod 15, the walnut seedlings can stand in the ground groove 21, preventing the new buds or roots from breaking, improving the survival rate, and also facilitating the subsequent covering of the soil. Multiple unit clips 20 are connected in series by a connecting rope 8. When the connecting rope 8 is tightened and straightened, the distances between the unit clips 20 are equal. The connecting rope 8 can be used to control the transplanting plant spacing. As Figure 7 shown in L in the figure, after transplantation, the unit clips 20 can be pulled out and recycled, so as to achieve the effect of convenient transplantation.

[0036] It should be noted that the breeding characteristics of pecan are monoecious and dichogamous. Taking the northern part of Zhejiang as an example, the flowering period of pecan is from April to May. The flowering times of male and female flowers of different varieties are inconsistent, and the phenomenon of non-meeting of the flowering periods of the varieties themselves is common. According to the sequence of the flowering times of male and female flowers, pecan varieties can be divided into two types: "female-first type" and "male-first type". The "female-first type" means that the maturity period (pollination-permissible period) of the female flowers of this variety is earlier than the maturity period (pollen-dispersing period) of its male flowers; relatively, for the "male-first type" variety, the time when the male flowers enter the pollen-dispersing period is earlier than the time when the female flowers enter the pollination-permissible period. Therefore, in actual production and cultivation, multiple varieties are usually selected for mixed planting to ensure that the flowering periods of different varieties meet, so as to efficiently utilize natural pollination and improve production efficiency.

[0037] The breeding device proposed by the present invention places walnut seeds 19 of different varieties on each culture tube 3 in a certain mixing order, and uses the water-absorbing sleeve 6 and the unit clip 20 to fix the walnut seeds 19. Since multiple unit clips 20 are connected in series by a connecting rope 8, they can be transplanted in sequence, providing convenience for the mixed planting of multiple varieties of walnuts.

[0038] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A breeding device for pecan cultivation, comprising a seedling-raising pool (1), characterized in that: Inside the seedling-raising pond (1), a water storage pipe (2) is fixedly installed. On the surface of the water storage pipe (2), a number of culture pipes (3) are fixedly installed. Each culture pipe (3) is vertically arranged on the upper surface of the water storage pipe (2). At one end of the seedling-raising pond (1), a water supply pipe (4) is fixedly installed. The water supply pipe (4) is communicated with the water storage pipe (2). At the other end of the seedling-raising pond (1), a drain pipe (5) is fixedly installed. The drain pipe (5) is communicated with the inner cavity of the seedling-raising pond (1). The walnut seeds (19) are placed at the upper end of the culture pipe (3). A water absorption sleeve (6) is sleeved on the upper end of the culture pipe (3). A clamping assembly is arranged outside the culture pipe (3). By clamping the water absorption sleeve (6) through the clamping assembly, the inner cavity of the water absorption sleeve (6) is reduced, and the walnut seeds (19) are wrapped and fixed at the upper end of the culture pipe (3) by the contracted water absorption sleeve (6).

2. The breeding device for pecan cultivation according to claim 1, wherein: The breeding device further includes a liquid storage tank (7). The liquid storage tank (7) is filled with a culture solution. The water supply pipe (4) is communicated with the liquid storage tank (7). The upper ends of the several culture pipes (3) are on the same horizontal plane. The liquid level in the liquid storage tank (7) is on the same horizontal plane as the upper end surface of the culture pipes (3). The excess culture solution in the liquid storage tank (7) overflows from the upper ends of the culture pipes (3) and then flows into the seedling-raising pond (1).

3. The breeding device for pecan cultivation according to claim 2, characterized in that: The material of the water absorption sleeve (6) is non-woven fabric. The particle size of the walnut seeds (19) is larger than the caliber of the culture pipe (3). When the walnut seeds (19) are placed at the upper end of the culture pipe (3), the suture line on the surface of the walnut seeds (19) is perpendicular to the upper end surface of the culture pipe (3). The inner diameter of the water absorption sleeve (6) is larger than the particle size of the walnut seeds (19).

4. The breeding device for pecan cultivation according to claim 3, characterized in that: The clamping assembly includes a plurality of unit clips (20). The plurality of unit clips (20) are connected in series by a connecting rope (8). When the connecting rope (8) is tightened and straightened, the distances between the unit clips (20) are equal.

5. The breeding device for pecan cultivation according to claim 4, characterized in that: The unit clip (20) includes a handle (9), a fixed toothed plate (10) and a movable pressure rod (11). An installation seat (12) is fixedly installed at the end of the handle (9). The fixed toothed plate (10) is fixedly connected with the installation seat (12). The movable pressure rod (11) is rotatably connected with the installation seat (12) through a rotating shaft (13). The handle (9) is fixedly connected with the connecting rope (8).

6. The breeding device for pecan cultivation according to claim 5, characterized in that: A torsion spring (14) is arranged between the end of the rotating shaft (13) and the surface of the installation seat (12). Under the elastic force of the torsion spring (14), the movable pressure rod (11) presses tightly on the surface of the fixed toothed plate (10), so that the water absorption sleeve (6) is clamped in the area between the movable pressure rod (11) and the fixed toothed plate (10).

7. The breeding device for pecan cultivation according to claim 6, characterized in that: The unit clip (20) further includes an insertion rod (15). The top end of the insertion rod (15) is fixedly connected with the installation seat (12). The fixed toothed plate (10) is fixed on the surface of the insertion rod (15). A socket (16) is fixedly installed on the surface of each culture pipe (3). An insertion hole is opened on the upper surface of the socket (16). The bottom end of the insertion rod (15) is tightly inserted into the insertion hole.

8. The breeding device for pecan cultivation according to claim 7, characterized in that: The breeding device further includes a guide rail plate (17). A T-shaped chute is formed on the side surface of the guide rail plate (17). One end of the handle (9) far away from the mounting seat (12) is fixedly installed with a T-shaped slider (18). The T-shaped slider (18) is slidably installed in the T-shaped chute of the guide rail plate (17), so that a plurality of unit clips (20) are assembled with the guide rail plate (17).

9. The breeding device for pecan cultivation according to claim 8, characterized in that: When the guide rail plate (17) is lifted upward, a plurality of unit clips (20), the water absorption sleeves (6) clamped by the unit clips (20), and the walnut seeds (19) wrapped in the water absorption sleeves (6) are lifted together with the guide rail plate (17). The unit clips (20) are sequentially slid and separated from the guide rail plate (17), and the walnut seeds (19) are transplanted by inserting the insertion rod (15) into the ground trench (21).

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