A device and method for propagating young branches of *Cinnamomum camphora* var. *hairi*.

Abstract

This invention relates to the field of cutting propagation devices, specifically a device and method for propagating young branches of *Cinnamomum camphora*. The device includes a seedling box with a liquid inlet, several placement holes evenly spaced on the top of the seedling box, and a seedling mechanism disposed within the seedling box. The seedling mechanism comprises several seedling components evenly spaced along the length of the seedling box. Each seedling component includes a seedling tube with an open top and clamping components symmetrically arranged on both sides of the seedling tube along its width. The seedling tube is fixedly connected to the seedling box and communicates with the placement holes. The clamping components include a linkage block, a rubber arm, and a drive unit for reciprocating the linkage block along the length of the seedling tube. The linkage block is slidably connected to the seedling tube, and the rubber arm is fixedly connected to the linkage block. The device also includes a circulation component for circulating the nutrient solution within the seedling tube. This addresses the problem that existing separation devices cannot effectively mix water vapor and hydrochloric acid vapor within the seedling box.

Description

Technical Field

[0001] This invention relates to the field of cutting propagation devices, specifically to a cutting propagation device and method for *Cinnamomum camphora*. Background Technology

[0002] The 'Leopard Skin Cinnamon' variety differs from the original variety in that its young branches are densely covered with grayish-yellow long soft hairs, and both sides of the young leaves are covered with grayish-yellow long soft hairs, especially dense on the underside. The underside of older leaves still has sparse hairs. The petioles are 1-2.2 cm long and are covered with grayish-yellow long soft hairs all over. Propagation of 'Leopard Skin Cinnamon' is generally carried out asexually. Cutting propagation can maintain excellent traits and is the most commonly used and highest survival rate propagation method. In the process of cutting propagation of 'Leopard Skin Cinnamon', appropriate seedling boxes are required to cultivate seedlings. However, the traditional seedling box has a relatively simple structure and does not have a light-transmitting structure or a covering structure, which affects the rooting of seedlings, reduces the quality of seedlings, and is also bulky and inconvenient to move and use. Its practicality needs to be improved.

[0003] To address the aforementioned issues, Chinese Patent Publication No. CN214282462U discloses a tea cutting propagation device, comprising a protective cover, a transparent tempered glass plate, a hinge, a seedling tray, a through hole, a liquid storage tray, and cotton thread. The transparent tempered glass plate is embedded in the upper part of the seedling box, and the protective cover is attached to the upper surface of the seedling box. A hinge is welded to the lower left side of the protective cover. A seedling tray is placed in the upper part of the seedling box, and a through hole is opened in the lower surface of the seedling tray. Cotton thread is inserted through the through hole. A liquid storage tray is placed in the lower part of the seedling box. This device facilitates shading and light transmission for seedlings, solving the problem that existing seedling devices lack both shading and light transmission capabilities.

[0004] The above-mentioned device has the following problems in actual use: When the device is used to cultivate seedlings in the seedling tray, there is no clamping component in the seedling tray to hold the seedlings. As a result, the seedlings are easily affected by changes in the external environment or human interference during the growth period, causing the seedlings to shake or even fall over. During the shaking of the seedlings, the effect of the seedlings absorbing nutrient solution is weakened, resulting in a decrease in the rate of seedling absorption of nutrient solution, which is not conducive to the growth and cultivation of seedlings. Summary of the Invention

[0005] This invention provides a device for propagating young branches of *Cinnamomum camphora* to solve the problem that existing seedling devices cannot hold seedlings during their growth period.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a cutting propagation device for *Cinnamomum camphora*, comprising a seedling box with a liquid inlet, a plurality of placement holes equidistantly opened on the top of the seedling box, and a seedling mechanism disposed within the seedling box; the seedling mechanism comprises a plurality of seedling components equidistantly arranged along the length direction of the seedling box; each seedling component comprises a seedling tube with an open top and clamping components symmetrically arranged on both sides of the seedling tube along the width direction; the seedling tube is fixedly connected to the seedling box and communicates with the placement holes; the clamping components comprise a linkage block, a rubber arm, and a drive unit for driving the linkage block to reciprocate along the length direction of the seedling tube; the linkage block is slidably connected to the seedling tube; the rubber arm is fixedly connected to the linkage block; and a circulation component for circulating the nutrient solution within the seedling tube.

[0007] The principle and advantages of this scheme are:

[0008] 1. Staff place the tender branches of *Cinnamomum camphora* that need to be propagated into the seedling tube through the placement hole. After the branches are in place, the drive unit moves the linkage block in a reciprocating motion. During the movement of the linkage block, the rubber arms move synchronously. During the movement of the rubber arms, since both rubber arms are in contact with the branches, the rubber arm moving closer to the branches deforms due to the reaction force of the branches, and the rubber arm moving away from the branches deforms due to the reaction force of the inner wall of the seedling tube. This causes both rubber arms to deform. In other words, the branches are fixed under the deformation force of the two rubber arms, making the branches more stable during growth, preventing them from shaking or falling over. This facilitates the efficient absorption of nutrient solution by the branches, helps improve the survival rate of the branches, and enables the branches to quickly take root and sprout, which is beneficial for subsequent transplanting.

[0009] Furthermore, the reciprocating motion of the two rubber arms enables a loose, movable clamping mechanism. Compared to traditional fixed clamping, the movable clamping mechanism allows for a certain degree of opening and closing for the growth of tender branches, preventing damage to the branches due to overly firm clamping. At the same time, it expands the growth range of the tender branches, effectively promoting them to become thicker and thus increasing their growth rate.

[0010] The use of rubber arms to hold the tender branches is to achieve flexible clamping of the tender branches. During the deformation of the rubber arms, the tender branches will not be squeezed or damaged, so as to ensure that the tender branches can grow and develop better.

[0011] 2. During the nutrient solution absorption process, the circulation system ensures continuous nutrient absorption by the roots, preventing nutrient waste due to insufficient contact between the solution and roots. The circulation also increases the surface area of ​​the solution, enhancing air-water exchange, promoting oxygen exchange, and increasing oxygen concentration, which aids root oxygen uptake and nutrient absorption. Furthermore, the circulation reduces pest and disease infections by minimizing nutrient accumulation and controlling the growth of root pathogens and fungi, thus reducing their occurrence.

[0012] In summary, the clamping of the rubber arm and the circulation of the nutrient solution by the circulation component can promote the rate of nutrient absorption by the tender branches and improve the utilization rate of light energy and oxygen, thus ensuring that the tender branches can grow efficiently and significantly increasing the survival rate of the tender branches.

[0013] Furthermore, it also includes an oxygenation section installed inside the seedling tube; the oxygenation section includes an oxygenation pipe, a wedge, and several oxygenation units equidistantly arranged along the width direction of the seedling tube; the vertical block is fixedly connected to the rubber arm; the wedge is fixedly connected to the vertical block; the oxygenation unit includes an oxygenation pipe and a rubber head; the oxygenation pipe is fixedly connected to the inner wall of the seedling tube; the rubber head is connected to the oxygenation pipe and is located on the movement trajectory of the vertical block.

[0014] During the movement of the rubber arm, the vertical block moves synchronously; during the movement of the vertical block, the wedge moves synchronously; during the movement of the wedge, when the wedge contacts the rubber head, the wedge continues to move, causing the rubber head to deform and increasing the internal pressure, thus compressing the air inside the rubber head; when the wedge no longer contacts the rubber head, the rubber head returns to its original shape, and the air inside the rubber head is discharged through the air outlet of the oxygenation tube; therefore, the rubber head can continuously release compressed air into the seedling tube.

[0015] Through the aforementioned movement, compressed air entering the nutrient cylinder increases the flow rate of the nutrient solution, thereby increasing the contact area between the nutrient solution and water, and promoting oxygen dissolution. Furthermore, the water flow in the nutrient solution maintains good exchange between the nutrient solution and the surrounding environment, further increasing the oxygen content within the nutrient solution. In other words, with the increased oxygen content in the nutrient solution, the roots of the tender branches can better absorb oxygen, further improving the survival rate of the tender branches, thus promoting their development and ensuring their vigorous growth.

[0016] The wedge-shaped compression of the rubber heads is designed to allow several rubber heads to be compressed sequentially, resulting in a gradual increase in the degree of deformation of each head. This means that the gas sprayed from the oxygenation pipe travels at different distances along the width of the seedling tube, ensuring that the nutrient solution at all locations along the length of the seedling tube is fully exposed to the compressed air. This further increases the oxygen content of the nutrient solution, ensuring better growth of the tender shoots.

[0017] Furthermore, the circulation component includes a guide block, a circulation pipe, a nutrient cylinder with an open top, several water outlets equidistantly spaced along the length of the circulation pipe, a power unit for driving the circulation pipe to reciprocate along the length of the guide block, and a circulation unit for introducing nutrient solution from the nutrient cylinder into the circulation pipe; the guide block is fixedly connected to the seedling box; the circulation pipe is slidably connected to the guide block and is in contact with the seedling cylinder; a water inlet is opened at the top of the seedling cylinder, and a water guide is opened at the bottom of the seedling cylinder, with the water inlet located on the movement trajectory of the water outlet; the nutrient cylinder is located below the seedling cylinder and is fixedly connected to the bottom of the seedling box.

[0018] Nutrient solution is continuously introduced into the circulation pipe through the circulation unit. During the introduction of nutrient solution, the power unit drives the circulation pipe to reciprocate along the length of the guide block. When the outlet and inlet of the circulation pipe are connected during the movement of the circulation pipe, the nutrient solution in the circulation pipe flows into the seedling tube through the inlet. During the reciprocating movement of the circulation pipe, the nutrient solution in the circulation pipe can be shaken, so that the nutrients in the nutrient solution can be mixed more fully and evenly with the water, thereby facilitating better absorption of nutrients by the tender branches.

[0019] Furthermore, by intermittently connecting the water outlet and the water inlet, the mixing time between nutrients and water is extended, allowing for more thorough mixing. On the other hand, the time it takes for the nutrient solution to flow into the seedling tube is slowed down, enabling the tender shoots to fully absorb the nutrient solution that has already flowed into the seedling tube, thereby improving the utilization rate of the nutrient solution.

[0020] The nutrient solution absorbed by the tender branches in the nutrient tube will flow into the nutrient tube through the water guide hole, thereby realizing the circulation of the nutrient solution. This ensures that the nutrient solution can flow efficiently among the nutrient tube, circulation pipe and seedling tube, which enhances the growth and development of tender branches and improves the efficiency of tender branch growth and development.

[0021] Furthermore, it also includes an auxiliary part set on the circulation pipe; the auxiliary part includes an auxiliary block, several transverse blocks, and a first spring; the auxiliary block is slidably connected to the circulation pipe and abuts against the inner wall of the seedling box; several transverse blocks are equidistantly arranged along the length direction of the auxiliary block, the transverse blocks are located inside the circulation pipe, and the transverse blocks are fixedly connected to the auxiliary block; the two ends of the first spring are respectively connected to the circulation pipe and the auxiliary block.

[0022] During the reciprocating motion of the circulation tube along the length of the guide block, the auxiliary block moves synchronously. During the movement of the auxiliary block, it is subjected to the reaction force of the inner wall of the seedling box, thus enabling it to reciprocate relative to the circulation tube. During the movement of the auxiliary block, the transverse block moves synchronously. During the movement of the transverse block, it can better stir the nutrient solution in the circulation tube, allowing the nutrients and water in the nutrient solution to mix more completely and thoroughly, promoting the absorption of nutrient solution by the tender shoots. Furthermore, through the stirring action of the transverse block, the force of the transverse block is greater, effectively preventing the deposition of nutrients in the nutrient solution, thereby enhancing the efficacy of the nutrient solution and improving its utilization rate.

[0023] Furthermore, it also includes several linkage parts equidistantly arranged along the length of the seedling box; the linkage parts include a short shaft, a rack, a gear, a first cam, a guide cylinder, a guide rod, a second spring, and a baffle for sealing the water guide hole; the short shaft is rotatably connected to the seedling cylinder; the rack is fixedly connected to the outer wall of the circulation pipe; the gear and the first cam are both fixedly connected to the short shaft; the guide cylinder is fixedly connected to the seedling cylinder; the guide rod is slidably connected to the guide cylinder; the two ends of the second spring are respectively connected to the guide rod and the guide cylinder; the baffle is fixedly connected to the guide rod and is in contact with the outer wall of the seedling cylinder.

[0024] During the reciprocating motion of the circulating tube, the rack moves synchronously; during the rack's motion, the gear rotates due to the meshing of the rack and gear; during the gear's rotation, the short shaft rotates synchronously; during the short shaft's rotation, the first cam rotates synchronously; during the first cam's rotation, when the protrusion of the first cam abuts against the guide rod, the guide rod moves vertically downward, and the second spring is compressed; when the protrusion of the first cam no longer abuts against the guide rod, the guide rod returns to its original position under the action of the second spring, and the guide rod moves vertically upward; therefore, the guide rod can perform vertical reciprocating motion.

[0025] During the vertical reciprocating motion of the guide rod, the baffle moves synchronously; during the vertical downward motion of the baffle, the baffle no longer seals the water guide hole, and the nutrient solution gradually flows into the nutrient cylinder along the water guide hole; during the vertical upward motion of the baffle, the baffle seals the water guide hole again, and the nutrient solution no longer gradually flows into the nutrient cylinder along the water guide hole.

[0026] The reciprocating motion of the baffle controls the rate at which the nutrient solution flows into the seedling cylinder, thereby extending the retention time of the nutrient solution in the seedling cylinder and allowing the tender shoots to better absorb the nutrient solution. Furthermore, the intermittent connection between the water outlet and the water inlet, along with the vertical reciprocating motion of the baffle, controls the inflow and outflow rates of the liquid, bringing them into balance and maintaining a constant liquid level. In other words, the nutrient solution in the seedling cylinder is constantly circulating, and the liquid level can cover the height required for the growth of the tender shoots, thus ensuring efficient growth of the tender shoots.

[0027] Furthermore, it also includes several stirring blocks equidistantly arranged along the length of the circulation pipe; the stirring blocks are fixedly connected to the circulation pipe, and the end of the stirring block away from the circulation pipe extends into the nutrient inlet cylinder.

[0028] Workers place nutrients and water into the nutrient tank through the inlet, and then drive the stirring block to reciprocate through the circulation pipe. During the movement of the stirring block, the nutrients and water in the nutrient tank are fully and evenly mixed to form a nutrient solution. The stirring of the stirring block avoids the need for workers to use a separate stirring mechanism to stir the nutrients and water, which would cause unnecessary trouble for the workers. It also prevents the nutrient solution from settling during the transfer to the nutrient tank, thereby improving the utilization rate of the nutrient solution.

[0029] Furthermore, the drive unit is a connecting block; the two ends of the connecting block are fixedly connected to the circulation pipe and the linkage block, respectively.

[0030] During the reciprocating motion of the circulation pipe, the connecting block moves synchronously; during the movement of the connecting block, the linkage block moves synchronously.

[0031] Furthermore, the power unit includes a rotating shaft, a second cam, a third spring, and a power component for driving the rotating shaft to rotate; the rotating shaft is rotatably connected to the seedling box; the second cam is fixedly connected to the rotating shaft and abuts against the circulation pipe; the two ends of the third spring are respectively connected to the circulation pipe and the guide block.

[0032] The rotating shaft is driven by a power component, and the second cam rotates synchronously during the rotation of the shaft. When the protrusion of the second cam abuts against the circulation pipe, the circulation pipe moves along the length of the guide block towards the position close to the inner wall of the seedling box, and the third spring is compressed. When the protrusion of the second cam no longer abuts against the circulation pipe, the circulation pipe returns to its original position under the action of the third spring, and moves along the length of the guide block away from the inner wall of the seedling box. Therefore, the circulation pipe can reciprocate along the length of the guide block.

[0033] Furthermore, the circulation section includes a piston cylinder, a piston block, and a fourth spring; the piston cylinder is fixedly connected to the seedling box; the piston block is slidably connected to the piston cylinder, and the second cam abuts against the piston block; a water pumping pipe and a flexible hose are connected to the piston cylinder; the end of the water pumping pipe away from the piston cylinder extends into the nutrient cylinder; the end of the flexible hose away from the piston cylinder is connected to the circulation pipe; and the two ends of the fourth spring are respectively connected to the piston cylinder and the piston block.

[0034] During the rotation of the second cam, when the protrusion of the second cam abuts against the piston block, the piston block moves along the length of the piston cylinder towards a position closer to the inner wall of the seedling box, the piston block pumps water, and the fourth spring is compressed. When the protrusion of the second cam no longer abuts against the piston block, the piston block returns to its original position under the action of the fourth spring, and the piston block moves along the length of the piston cylinder away from the inner wall of the seedling box, the piston block drains water; therefore, the piston block can continuously pump water and drain water.

[0035] During the pumping of water by the piston block, the nutrient solution enters the piston cylinder through the pumping pipe and is stored there; during the drainage of water by the piston block, the nutrient solution stored in the piston cylinder enters the circulation pipe through the hose; through the reciprocating motion of the piston block, the nutrient solution can circulate among the nutrient cylinder, the circulation pipe, and the seedling cylinder.

[0036] To achieve the above objectives, the present invention adopts the following technical solution: a method for propagating *Cinnamomum camphora* var. *hairi* through softwood cuttings, comprising the following steps:

[0037] Step (1): The staff put the tender branches that need to be cultivated into the seedling tube one by one;

[0038] Step (2): The reciprocating motion of the rubber arm is used to dynamically clamp the tender branch;

[0039] Step (3): The nutrient solution in the seedling tube is oxygenated by the reciprocating motion of the rubber head;

[0040] Step (4): The liquid level of the seedling tube is balanced and the flow rate of the nutrient solution is slowed down by the reciprocating motion of the circulation pipe and the reciprocating motion of the baffle.

[0041] Step (5): The nutrient solution in the circulating tube can be stirred by the horizontal block;

[0042] Step (6): The nutrients and water in the nutrient tank are mixed by stirring with a stirring block to form a nutrient solution;

[0043] Step (7): The nutrient solution is circulated among the nutrient cylinder, circulation pipe and seedling cylinder by the reciprocating motion of the piston block.

[0044] The principles and advantages of this case are:

[0045] 1. Through the reciprocating motion of the two rubber arms, a loosely movable clamping mechanism is achieved. Compared with the traditional fixed clamping mechanism, the movable clamping mechanism can provide a certain opening and closing for the growth of tender branches without damaging them due to excessive clamping. At the same time, it expands the growth range of tender branches, thereby effectively promoting the tender branches to become thicker and stronger, thus improving the growth rate of tender branches.

[0046] 2. The circulation of the nutrient solution effectively avoids nutrient waste caused by insufficient contact between the nutrient solution and the root system. During the circulation of the nutrient solution, the surface area of ​​the water is increased, thereby increasing the surface area for water-air exchange, promoting oxygen exchange in the water, increasing oxygen concentration, which helps the roots absorb oxygen and increases the absorption of nutrients by tender branches. At the same time, the circulation of the nutrient solution can also reduce the infection of pests and diseases because it can control the reproduction of root pathogens and fungi by reducing nutrient accumulation, thereby reducing the occurrence of pests and diseases.

[0047] 3. By using the mixing blocks and horizontal blocks to stir the nutrient solution, the need for staff to use a separate mixing mechanism to stir the nutrients and water is avoided, which would cause unnecessary trouble for the staff. It can also prevent the nutrient solution from settling during the transfer to the nutrient tank, thereby improving the utilization rate of the nutrient solution. At the same time, it ensures that the nutrients and water in the nutrient solution can be mixed more completely and thoroughly, promoting the absorption of nutrient solution by the tender branches.

[0048] 4. By intermittently connecting the water outlet and the water inlet, and by the vertical reciprocating motion of the baffle, the inflow and outflow rates of the liquid can be controlled to achieve balance and maintain a constant liquid level. In other words, the nutrient solution in the seedling tube is always in circulation, and the liquid level can cover the height required for the growth of tender branches, thus ensuring that the tender branches can grow efficiently. Attached Figure Description

[0049] Figure 1 This is a schematic diagram of the seedling box in an embodiment of the leopard skin camphor tree tender branch cutting cultivation device of the present invention.

[0050] Figure 2 for Figure 1 A schematic diagram of the internal structure of the seedling box from the main view.

[0051] Figure 3 for Figure 1 A schematic diagram of the internal structure of the seedling box viewed from the rear.

[0052] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0053] Figure 5 for Figure 4 Enlarged view of point B in the middle.

[0054] Figure 6 for Figure 4 A sectional view of the seedling tray from the main view direction.

[0055] Figure 7 for Figure 2 A partial cross-sectional view of the central circulation pipe from a top-down perspective.

[0056] Figure 8 for Figure 7 Enlarged view of point C in the middle. Detailed Implementation

[0057] The following detailed description illustrates the specific implementation method:

[0058] The reference numerals in the accompanying drawings of the instruction manual include: 1. Seedling box; 2. Seedling cylinder; 3. Linkage block; 4. Rubber arm; 5. Rubber head; 6. Vertical block; 7. Guide block; 8. Circulation pipe; 9. Nutrient cylinder; 10. Water outlet; 11. Water inlet; 12. Auxiliary block; 13. Horizontal block; 14. First spring; 15. Short shaft; 16. Rack; 17. Gear; 18. First cam; 19. Guide cylinder; 20. Guide rod; 21. Second spring; 22. Baffle; 23. Stirring block; 24. Connecting block; 25. Rotating shaft; 26. Second cam; 27. Third spring; 28. Piston cylinder; 29. ​​Piston block; 30. Fourth spring; 31. Water suction pipe; 32. Flexible hose; 33. Motor; 34. Aeration pipe; 35. Wedge; 36. Water guide hole.

[0059] The basic implementation examples are as follows: Figure 1 , 2 As shown in points 3, 4, 5, 6, 7, and 8:

[0060] This invention provides a device for propagating young branches of *Cinnamomum camphora*, including a seedling box 1 with a liquid inlet, the seedling box 1 being made of transparent material, a sealing plate installed at the liquid inlet, and several placement holes equidistantly opened on the top of the seedling box 1. It also includes a seedling mechanism disposed within the seedling box 1; the seedling mechanism includes several seedling components equidistantly arranged along the length of the seedling box 1; each seedling component includes a seedling tube 2 with a top opening and clamping components symmetrically arranged on both sides of the seedling tube 2 along its width; the seedling tube 2 is fixedly connected to the inner wall of the top of the seedling box 1, and communicates with the placement holes; the clamping components include a linkage block 3, a rubber arm 4, and a drive unit for driving the linkage block 3 to reciprocate along the length of the seedling tube 2; the linkage block 3 is slidably connected to the seedling tube 2; the rubber arm 4 is fixedly connected to the linkage block 3; and a circulation component for circulating the nutrient solution within the seedling tube 2.

[0061] It also includes an oxygenation section installed inside the seedling tube 2; the oxygenation section includes an oxygenation pipe 34, a wedge block 35, and several oxygenation units equidistantly arranged along the width direction of the seedling tube 2; the vertical block 6 is fixedly connected to the rubber arm 4; the wedge block 35 is fixedly connected to the bottom of the vertical block 6; the oxygenation unit includes an oxygenation pipe 34 and a rubber head 5; the oxygenation pipe 34 is fixedly connected to the bottom of the inner wall of the seedling tube 2; the rubber head 5 is connected to the oxygenation pipe 34 and is located on the movement trajectory of the vertical block 6.

[0062] The circulation assembly includes a guide block 7, a circulation pipe 8, a nutrient cylinder 9 with a top opening, several water outlets 10 equidistantly opened along the length of the circulation pipe 8, a power unit for driving the circulation pipe 8 to reciprocate along the length of the guide block 7, and a circulation unit for introducing nutrient solution from the nutrient cylinder 9 into the circulation pipe 8; the guide block 7 is fixedly connected to the inner wall of the seedling box 1; the circulation pipe 8 is slidably connected to the guide block 7, and the side wall of the circulation pipe 8 is in contact with the side wall of the seedling cylinder 2; a water inlet 11 is opened at the top of the side wall of the seedling cylinder 2, the water inlet 11 is located on the side wall of the seedling cylinder 2 in contact with the circulation pipe 8, and a water guide hole 36 is opened at the bottom of the side wall of the seedling cylinder 2, the water inlet 11 is located on the movement trajectory of the water outlet 10; the nutrient cylinder 9 is located below the seedling cylinder 2, and the nutrient cylinder 9 is fixedly connected to the bottom of the inner wall of the seedling box 1.

[0063] It also includes an auxiliary part set on the circulation pipe 8; the auxiliary part includes an auxiliary block 12, several transverse blocks 13, and a first spring 14; the auxiliary block 12 is slidably connected to the circulation pipe 8, one end of the auxiliary block 12 extends into the circulation pipe 8, and the other end of the auxiliary block 12 abuts against the inner wall of the seedling box 1; several transverse blocks 13 are equidistantly arranged along the length direction of the auxiliary block 12, the transverse blocks 13 are located inside the circulation pipe 8, and the transverse blocks 13 are fixedly connected to the auxiliary block 12; the first spring 14 is sleeved on the auxiliary block 12, and the two ends of the first spring 14 are respectively connected to the circulation pipe 8 and the auxiliary block 12.

[0064] It also includes several linkage parts equidistantly arranged along the length of the seedling box 1; the linkage parts include a short shaft 15, a rack 16, a gear 17, a first cam 18, a guide cylinder 19, a guide rod 20, a second spring 21, and a baffle 22 for sealing the water guide hole 36; the short shaft 15 is rotatably connected to the seedling box 2; the rack 16 is fixedly connected to the outer wall of the circulation pipe 8; the gear 17 and the first cam 18 are both fixedly connected to the short shaft 15; the guide cylinder 19 is fixedly connected to the seedling box 2; the guide rod 20 is slidably connected to the guide cylinder 19; the two ends of the second spring 21 are respectively connected to the guide rod 20 and the guide cylinder 19; the baffle 22 is fixedly connected to the guide rod 20 and is in contact with the outer wall of the seedling box 2.

[0065] It also includes a number of stirring blocks 23 that are equidistantly arranged along the length of the circulation pipe 8; the stirring blocks 23 are fixedly connected to the circulation pipe 8, and the end of the stirring block 23 away from the circulation pipe 8 extends into the nutrient inlet cylinder 9.

[0066] The driving part is a connecting block 24; the two ends of the connecting block 24 are fixedly connected to the circulation pipe 8 and the linkage block 3, respectively.

[0067] The power unit includes a rotating shaft 25, a second cam 26, a third spring 27, and a power component for driving the rotating shaft 25 to rotate; the rotating shaft 25 is rotatably connected to the seedling box 1; the second cam 26 is fixedly connected to the rotating shaft 25 and abuts against the circulation pipe 8; the two ends of the third spring 27 are respectively connected to the circulation pipe 8 and the guide block 7; the power component is a motor 33, which is fixedly connected to the top of the seedling box 1, and the output shaft of the motor 33 is fixedly connected to the rotating shaft 25.

[0068] The circulation section includes a piston cylinder 28, a piston block 29, and a fourth spring 30. The piston cylinder 28 is fixedly connected to the seedling box 1. The piston block 29 is slidably connected to the piston cylinder 28, and the second cam 26 abuts against the piston block 29. A water pumping pipe 31 and a hose 32 are connected to the piston cylinder 28. The end of the water pumping pipe 31 away from the piston cylinder 28 extends into the nutrient cylinder 9. A first one-way valve is installed on the water pumping pipe 31, allowing liquid to flow unidirectionally from the nutrient cylinder 9 to the piston cylinder 28. The end of the hose 32 away from the piston cylinder 28 is connected to the circulation pipe 8. A second one-way valve is installed on the hose 32, allowing liquid to flow unidirectionally from the piston cylinder 28 to the circulation pipe 8. The length of the hose 32 is suitable for the circulation pipe 8 to reciprocate along the length of the guide block 7. The fourth spring 30 is sleeved on the piston block 29, and the two ends of the fourth spring 30 are respectively connected to the piston cylinder 28 and the piston block 29.

[0069] The specific implementation process is as follows:

[0070] The staff places the tender branches of *Cinnamomum camphora* that need to be propagated into the seedling tube 2 through the placement hole. After the branches are placed, the staff puts nutrients and water into the nutrient tube 9 through the liquid inlet. The motor 33 is started, and the output shaft of the motor 33 drives the rotating shaft 25 to rotate. During the rotation of the rotating shaft 25, the second cam 26 rotates synchronously. During the rotation of the second cam 26, when the protrusion of the second cam 26 abuts against the circulation pipe 8, the circulation pipe 8 moves along the length direction of the guide block 7 towards the position close to the inner wall of the seedling box 1, and the third spring 27 is compressed. When the protrusion of the second cam 26 no longer abuts against the circulation pipe 8, the circulation pipe 8 returns to its original position under the action of the third spring 27, and the circulation pipe 8 moves along the length direction of the guide block 7 away from the inner wall of the seedling box 1. Therefore, the circulation pipe 8 can reciprocate along the length direction of the guide block 7.

[0071] During the reciprocating motion of the circulation pipe 8, the stirring block 23 moves synchronously. During the movement of the stirring block 23, the stirring block 23 can fully and evenly stir the nutrients and water in the nutrient tank 9, so that they are mixed into a nutrient solution. Through the stirring of the stirring block 23, the staff does not need to use a separate stirring mechanism to stir the nutrients and water, which would cause unnecessary trouble for the staff. It can also prevent the nutrient solution from settling during the transfer of the nutrient solution into the nutrient tank 9, thereby improving the utilization rate of the nutrient solution.

[0072] During the rotation of the second cam 26, when the protrusion of the second cam 26 abuts against the piston block 29, the piston block 29 moves along the length of the piston cylinder 28 towards a position closer to the inner wall of the seedling box 1, the piston block 29 pumps water, and the fourth spring 30 is compressed. When the protrusion of the second cam 26 no longer abuts against the piston block 29, the piston block 29 returns to its original position under the action of the fourth spring 30, and the piston block 29 moves along the length of the piston cylinder 28 away from the inner wall of the seedling box 1, the piston block 29 drains water; therefore, the piston block 29 can continuously pump water and drain water.

[0073] During the pumping of water by piston block 29, the nutrient solution enters the piston cylinder 28 along the pumping pipe 31 and is stored there; during the drainage of water by piston block 29, the nutrient solution stored in the piston cylinder 28 enters the circulation pipe 8 along the hose 32.

[0074] During the movement of the circulation pipe 8, when the outlet hole 10 and the inlet hole 11 are connected, the nutrient solution in the circulation pipe 8 flows into the seedling tube 2 along the inlet hole 11. During the reciprocating movement of the circulation pipe 8, the nutrient solution in the circulation pipe 8 can be shaken, so that the nutrients in the nutrient solution can be mixed more fully and evenly with the water, thereby facilitating better absorption of nutrients by the tender branches.

[0075] Furthermore, the intermittent connection between the water outlet 10 and the water inlet 11 extends the mixing time between nutrients and water, allowing for more thorough mixing. On the other hand, it slows down the flow of nutrient solution into the seedling tube 2, enabling the tender branches to fully absorb the nutrient solution that has already flowed into the nutrient tube 9, thereby improving the utilization rate of the nutrient solution.

[0076] During the reciprocating motion of the circulation pipe 8 along the length of the guide block 7, the auxiliary block 12 moves synchronously. During the movement of the auxiliary block 12, it is subjected to the reaction force of the inner wall of the seedling box 1, thus enabling it to reciprocate relative to the circulation pipe 8. During the movement of the auxiliary block 12, the transverse block 13 moves synchronously. During the movement of the transverse block 13, it can better stir the nutrient solution in the circulation pipe 8, so that the nutrients and water in the nutrient solution can be mixed more completely and thoroughly, promoting the absorption of nutrient solution by the tender branches. Furthermore, through the stirring of the transverse block 13, the force of the transverse block 13 is greater, which can effectively prevent the deposition of nutrients in the nutrient solution, thereby enhancing the efficacy of the nutrient solution and improving its utilization rate.

[0077] During the reciprocating motion of the circulation tube 8, the rack 16 moves synchronously; during the movement of the rack 16, the rack 16 meshes with the gear 17, causing the gear 17 to rotate; during the rotation of the gear 17, the short shaft 15 rotates synchronously; during the rotation of the short shaft 15, the first cam 18 rotates synchronously; during the rotation of the first cam 18, when the protrusion of the first cam 18 abuts against the guide rod 20, the guide rod 20 moves vertically downward, and the second spring 21 is compressed; when the protrusion of the first cam 18 no longer abuts against the guide rod 20, the guide rod 20 returns to its original position under the action of the second spring 21, and the guide rod 20 moves vertically upward; therefore, the guide rod 20 can perform vertical reciprocating motion.

[0078] During the vertical reciprocating motion of the guide rod 20, the baffle 22 moves synchronously; during the vertical downward motion of the baffle 22, the baffle 22 no longer seals the water guide hole 36, and the nutrient solution gradually flows into the nutrient cylinder 9 along the water guide hole 36; during the vertical upward motion of the baffle 22, the baffle 22 seals the water guide hole 36 again, and the nutrient solution no longer gradually flows into the nutrient cylinder 9 along the water guide hole 36.

[0079] The reciprocating motion of the baffle 22 controls the rate at which the nutrient solution flows into the nutrient cylinder 9, thereby prolonging the retention time of the nutrient solution in the seedling cylinder 2, allowing the tender branches to better absorb the nutrient solution. Furthermore, the intermittent connection between the water outlet 10 and the water inlet 11, along with the vertical reciprocating motion of the baffle 22, controls the inflow and outflow rates of the liquid, bringing them into balance and maintaining a constant liquid level. In other words, the nutrient solution in the seedling cylinder 2 is constantly circulating, and the liquid level can cover the height required for the growth of the tender branches, thus ensuring that the tender branches can grow efficiently.

[0080] The nutrient solution absorbed by the tender branches in the nutrient cylinder 9 will flow into the nutrient cylinder 9 through the water guide hole 36, thereby realizing the circulation of the nutrient solution. This ensures that the nutrient solution can flow efficiently among the nutrient cylinder 9, the circulation pipe 8, and the seedling cylinder 2, enhancing the effect of tender branch growth and development and improving the efficiency of tender branch growth and development.

[0081] During the reciprocating motion of the circulation tube 8, the connecting block 24 moves synchronously; during the movement of the connecting block 24, the linkage block 3 moves synchronously; during the movement of the linkage block 3, the rubber arm 4 moves synchronously; during the movement of the rubber arm 4, since both rubber arms 4 are in contact with the tender branch, the rubber arm 4 moving closer to the tender branch is deformed by the reaction force of the tender branch, and the rubber arm 4 moving away from the tender branch is deformed by the reaction force of the inner wall of the seedling tube 2, thus causing both rubber arms 4 to deform; that is, the tender branch is fixed under the deformation force of the two rubber arms 4, so that the tender branch has strong stability during the growth period, and will not shake or fall over, which makes it easier for the tender branch to absorb nutrient solution efficiently, which helps to improve the survival rate of the tender branch, and thus enables the tender branch to quickly take root and sprout, which is beneficial to subsequent transplanting.

[0082] Furthermore, the reciprocating motion of the two rubber arms 4 enables a loosely movable clamping mechanism. Compared to traditional fixed clamping, the movable clamping mechanism allows for a certain degree of opening and closing for the growth of tender branches, preventing damage to the branches due to overly firm clamping. At the same time, it expands the growth range of the tender branches, thereby effectively promoting the branches to become thicker and thus increasing the growth rate of the branches.

[0083] The rubber arm 4 is used to hold the tender branches to achieve flexible clamping. During the deformation of the rubber arm 4, it will not cause squeezing damage to the tender branches, so as to ensure that the tender branches can grow and develop better.

[0084] During the absorption of nutrient solution by tender shoots, the circulation of the nutrient solution allows the roots to continuously absorb nutrients, effectively avoiding nutrient waste caused by insufficient contact between the nutrient solution and the roots. The circulation of the nutrient solution also increases the surface area of ​​the water, thereby increasing the surface area for water-air exchange, promoting oxygen exchange in the water, increasing oxygen concentration, which helps the roots absorb oxygen and increases the absorption of nutrients by the tender shoots. Simultaneously, the circulation of the nutrient solution also reduces the risk of pests and diseases because it controls the reproduction of root pathogens and fungi by reducing nutrient accumulation, thus reducing the occurrence of pests and diseases.

[0085] In summary, the clamping of the rubber arm 4 and the circulation of the nutrient solution can promote the rate of nutrient absorption by the tender branches and improve the utilization rate of light energy and oxygen, ensuring that the tender branches can grow efficiently, that is, the survival rate of the tender branches increases significantly.

[0086] During the movement of the rubber arm 4, the vertical block 6 moves synchronously; during the movement of the vertical block 6, the wedge block 35 moves synchronously; during the movement of the wedge block 35, when the wedge block 35 contacts the rubber head 5, the wedge block 35 continues to move, and the rubber head 5 deforms, increasing the internal pressure of the rubber head 5, which compresses the air inside the rubber head 5; when the wedge block 35 no longer contacts the rubber head 5, the rubber head 5 returns to its original state, and the air inside the rubber head 5 is discharged through the air outlet of the oxygenation pipe 34; therefore, the rubber head 5 can continuously release compressed air into the seedling cylinder 2.

[0087] Through the aforementioned movement, compressed air enters the nutrient cylinder 9, increasing the flow rate of the nutrient solution, thereby increasing the contact area between the nutrient solution and water, and promoting oxygen dissolution. Furthermore, the water flow generated by the nutrient solution maintains good exchange between the nutrient solution and the surrounding environment, further increasing the oxygen content in the nutrient solution. In other words, with the increased oxygen content in the nutrient solution, the roots of the tender branches can better absorb oxygen, further improving the survival rate of the tender branches, thus promoting their development and ensuring their vigorous growth.

[0088] The purpose of using wedge block 35 to compress rubber head 5 is to ensure that several rubber heads 5 are compressed sequentially, thereby gradually increasing the degree of deformation of several rubber heads 5. This means that the gas sprayed from oxygenation pipe 34 along the width of seedling tube 2 has different action distances, thus ensuring that the nutrient solution at all positions along the length of seedling tube 2 can be fully affected by compressed air, further increasing the oxygen content of the nutrient solution and ensuring better growth of tender branches.

[0089] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A device for cultivating Litsea rotundifolia young branch cuttings, comprising a seedling box with a liquid inlet, and a plurality of placement holes equidistantly formed on the top of the seedling box, characterized in that: The seedling raising mechanism comprises a plurality of seedling raising assemblies equidistantly arranged along the length direction of the seedling raising box; the seedling raising assembly comprises a seedling raising cylinder with an open top, and clamping assemblies symmetrically arranged at both sides in the seedling raising cylinder along the width direction of the seedling raising cylinder; the seedling raising cylinder is fixedly connected with the seedling raising box, and the seedling raising cylinder is communicated with the placing hole; the clamping assembly comprises a linkage block, a rubber arm, and a driving part for driving the linkage block to make reciprocating movement along the length direction of the seedling raising cylinder; the linkage block is slidably connected with the seedling raising cylinder; the rubber arm is fixedly connected with the linkage block; and the circulation assembly for circulating and flowing the nutrient solution in the seedling raising cylinder is further arranged. The oxygen increasing part arranged in the seedling raising cylinder comprises an oxygen increasing pipe, a wedge block, and a plurality of oxygen increasing units equidistantly arranged along the width direction of the seedling raising cylinder; the vertical block is fixedly connected with the rubber arm; the wedge block is fixedly connected with the vertical block; the oxygen increasing unit comprises the oxygen increasing pipe and a rubber head; the oxygen increasing pipe is fixedly connected with the inner wall of the seedling raising cylinder; the rubber head is communicated with the oxygen increasing pipe, and the rubber head is located on the movement track of the vertical block. The circulation assembly comprises a guide block, a circulation pipe, a nutrient cylinder with an open top, a plurality of water outlet holes equidistantly arranged along the length direction of the circulation pipe, a power part for driving the circulation pipe to make reciprocating movement along the length direction of the guide block, and a circulation part for guiding the nutrient solution in the nutrient cylinder into the circulation pipe; the guide block is fixedly connected with the seedling raising box; the circulation pipe is slidably connected with the guide block, and the circulation pipe is attached to the seedling raising cylinder; the seedling raising cylinder is provided with a water inlet hole at the top and a water guide hole at the bottom, and the water inlet hole is located on the movement track of the water outlet hole; the nutrient cylinder is located below the seedling raising cylinder, and the nutrient cylinder is fixedly connected with the bottom of the seedling raising box. The auxiliary part arranged on the circulation pipe comprises an auxiliary block, a plurality of transverse blocks, and a first spring; the auxiliary block is slidably connected with the circulation pipe, and the auxiliary block is abutted against the inner wall of the seedling raising box; the plurality of transverse blocks are equidistantly arranged along the length direction of the auxiliary block, and the transverse blocks are located in the circulation pipe and are fixedly connected with the auxiliary block; and the two ends of the first spring are connected with the circulation pipe and the auxiliary block, respectively.

2. The device for cultivating Cinnamomum subavenium twigs by cutting according to claim 1, wherein: A plurality of linkage parts equidistantly arranged along the length direction of the seedling raising box are further arranged; the linkage part comprises a short shaft, a rack, a gear, a first cam, a guide cylinder, a guide rod, a second spring, and a baffle for sealing the water guide hole; the short shaft is rotatably connected with the seedling raising cylinder; the rack is fixedly connected with the outer wall of the circulation pipe; the gear and the first cam are fixedly connected with the short shaft; the guide cylinder is fixedly connected with the seedling raising cylinder; the guide rod is slidably connected with the guide cylinder; the two ends of the second spring are connected with the guide rod and the guide cylinder, respectively; the baffle is fixedly connected with the guide rod and is attached to the outer wall of the seedling raising cylinder.

3. The device for cultivating Cinnamomum subavenium twigs by cutting according to claim 2, wherein: A plurality of stirring blocks equidistantly arranged along the length direction of the circulation pipe are further arranged; the stirring blocks are fixedly connected with the circulation pipe, and the ends of the stirring blocks away from the circulation pipe extend into the nutrient cylinder.

4. The device for cultivating Cinnamomum subavenium twigs by cutting according to claim 3, wherein: The driving part comprises a connecting block; the two ends of the connecting block are fixedly connected with the circulation pipe and the linkage block, respectively.

5. The device for cultivating Cinnamomum subavenium twigs by cutting according to claim 4, wherein: The power part comprises a rotating shaft, a second cam, a third spring, and a power piece for driving the rotating shaft to rotate; the rotating shaft is rotatably connected with the seedling raising box; the second cam is fixedly connected with the rotating shaft and abutted against the circulation pipe; and the two ends of the third spring are connected with the circulation pipe and the guide block, respectively.

6. The device for cultivating Cinnamomum subavenium twigs by cutting according to claim 5, wherein: The circulating part comprises a piston cylinder, a piston block and a fourth spring; the piston cylinder is fixedly connected with the seedling box; the piston block is in sliding connection with the piston cylinder, and the second cam is in abutment with the piston block; the piston cylinder is in communication with a water suction pipe and a hose; the water suction pipe extends into the nutrient cylinder at an end away from the piston cylinder; the hose is in communication with the circulating pipe at an end away from the piston cylinder; and the fourth spring is connected at two ends with the piston cylinder and the piston block respectively.

7. A method for breeding based on the device for cultivating Cinnamomum subavenium tender branch cuttings according to claim 6, characterized in that: The method comprises the following steps: Step (1): the staff sequentially put the twigs to be cultivated into the seedling cylinders; Step (2): the dynamic clamping of the twigs is realized through the reciprocating movement of the rubber arms; Step (3): the oxygenation of the nutrient solution in the seedling cylinders is realized through the reciprocating movement of the rubber heads; Step (4): the liquid level balance of the seedling cylinders and the delay of the flow rate of the nutrient solution are realized through the reciprocating movement of the circulating pipes and the reciprocating movement of the baffles; Step (5): the stirring of the nutrient solution in the circulating pipes is realized through the transverse blocks; Step (6): the nutrient solution is prepared by stirring the nutrient substances and the water in the nutrient cylinders through the stirring blocks; Step (7): the circulating flow of the nutrient solution among the nutrient cylinders, the circulating pipes and the seedling cylinders is realized through the reciprocating movement of the piston blocks.

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