Seedling raising device and seedling raising method for forest and grass resource protection

Abstract

The invention relates to the technical field of garden seedling culture, in particular to a seedling culture device for forest and grass resource protection, which comprises a base, lifters are mounted on the front side and the rear side of the upper surface of the base, a driving mechanism is mounted on the upper surface of the base, the lifters are pushed by the driving mechanism to realize lifting, and moving mechanisms are mounted at the tops of the lifters. A soil loosening mechanism is mounted at the top of the moving mechanism. Fertilization is triggered through pressure, it is ensured that nutrients accurately act on a root system area, waste and loss of traditional broadcast fertilization are reduced, the fertilizer utilization efficiency is improved, and the depth of a vibrating bar penetrating into the soil dynamically becomes small along with growth of the root system; shallow soil is guaranteed to be continuously loose to adapt to growth of new roots, deep root systems are prevented from being directly touched and damaged by the vibrating rod, rhizosphere soil and beneficial microorganisms are reserved to the maximum extent, and the survival rate of transplanted trees is remarkably increased.

Description

Technical Field

[0001] The present invention relates to the technical field of garden seedling cultivation, and in particular to a seedling cultivation device and a seedling cultivation method for protecting forest and grass resources. Background Art

[0002] A garden refers to a specifically cultivated natural environment and recreational space. This beautiful natural environment and recreational space is created by applying engineering techniques and artistic means within a specific area, through modifying the terrain (or further building mountains, stacking rocks, and managing waterways), planting trees and flowers, constructing buildings, and arranging paths.

[0003] Before the construction of a garden, it is necessary to raise seedlings of trees, flowers and plants. For trees with strong vitality and low environmental requirements, a general seedling raising device can be used for cultivation. However, for the cultivation of oak and poplar trees, since poplar trees have high requirements for soil hardness and soil nutrition, they are not easy to take root and grow slowly. Moreover, when the trees are transported, the soil has strong adhesion to the cultivation equipment, which makes it impossible to completely remove the soil. The root system of the poplar trees is damaged, and the survival rate of transplantation is low. Therefore, a seedling raising device for protecting forest and grass resources with anti-compaction is proposed. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art that the soil cannot be loosened regularly, the rooting of poplar trees is inhibited, and the survival rate of poplar trees after transplantation is low, the technical problem to be solved by the present invention is a seedling raising device and a seedling raising method for protecting forest and grass resources.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a seedling raising device for protecting forest and grass resources, comprising a base, wherein lifters are installed on both the front and rear sides of the upper surface of the base, a driving mechanism is installed on the upper surface of the base, and the lifter is pushed up and down by the driving mechanism, a moving mechanism is installed on the top of the lifter, and a loosening mechanism is installed on the top of the moving mechanism, and the loosening mechanism is used to break up the soil for raising seedlings to promote the growth of tree roots, a planting bed is installed on the top of the lifter, and a plurality of air holes are opened on the lower surface of the planting bed at equal intervals from left to right, and a positioning mechanism is installed on the top of the planting bed, and the positioning mechanism plans the tree planting position to facilitate tree transplanting; The driving mechanism includes two hydraulic cylinders installed on the front and rear sides of the upper surface of the base, the output end of the hydraulic cylinder is installed with a support plate, and the front and rear ends of the left side wall of the support plate are both horizontally installed with push plates, and the outer wall of the push plate is provided with a limiting groove; The push plate is driven by the hydraulic cylinder to move left and right, and the lifting plate is raised or lowered in cooperation with the limit groove and roller to adjust the height of the loosening mechanism. The loosening mechanism can adjust the loosening depth according to the growth of the tree roots to prevent damage to the tree roots.

[0006] Preferably, the limiting grooves are distributed in a stepped manner on the outer wall of the push plate, and the limiting grooves in the vertical sections are arranged obliquely.

[0007] Preferably, the soil loosening mechanism includes a liquid storage bag installed on the top of the mobile mechanism, and the liquid storage bag introduces water and fertilizer through a pipeline, and a vibration motor is installed at both the front and rear ends of the right side wall of the liquid storage bag. A plurality of vibration rods are installed on the upper surface of the liquid storage bag at equal distances from the front to the back, and the top of the vibration rod is conical in shape, so that the vibration rod can pass through the air vent and enter the planting soil. The power of the vibration motor can make the liquid storage bag and the vibration rod resonate, causing the soil to vibrate and loosen, and a plurality of switch assemblies are installed on the outer wall of the vibration rod at equal distances along the circumference; By transmitting energy through the liquid storage capsule, the vibration motor can make the vibration rod vibrate, loosening the soil and promoting the root system of trees to take root.

[0008] Preferably, the switch assembly includes a valve seat embedded in the outer wall of the vibrating rod, and openings are provided at the center positions on the left and right sides of the valve seat. Springs and valve cores are respectively inserted at the upper and lower ends of the inner cavity of the valve seat from the inside to the outside. Under the action of the spring force, the two valve cores are pushed closer, allowing the valve core to close the opening.

[0009] Preferably, the inner side of the left side wall of the valve core is shaped like an inclined surface.

[0010] Preferably, the positioning mechanism includes two left-right symmetrical bases installed on the upper surface of the planting bed, a guide rod is installed in the middle of the inner cavity of the base along the front-to-back direction, and a plurality of groups of front-to-back symmetrical beams are installed on the outer wall of the guide rod from front to back, and clamps are installed on the inner sides of the front-to-back symmetrical beams at equal distances from left to right. When the two clamps are closed, the shape is circular, forming a soil storage space, and latches are installed at both ends of the beams. Gears are installed in the inner cavity of the base from front to back through bearings, and two guide grooves are provided on the outer wall of the gear, and the latch is inserted into the inner cavity of the guide groove. A second cylinder is installed at the bottom of the front surface of the base, and a rack meshing with the gear is installed at the output end of the second cylinder. The rack is driven by the second cylinder to move back and forth, thereby changing the rotation direction of the gear; The second cylinder, rack and gear form a power group, which allows the two beams to move closer or further away, realizing the opening and closing of the splint. When transplanting trees, the roots are allowed to take away as much soil as possible to prevent root damage.

[0011] Preferably, the splint corresponds to the position of the vent hole.

[0012] Preferably, the guide groove is in an arc shape, and the two guide grooves overlap when rotated 180 degrees around the center point of the gear.

[0013] A seedling raising method for a seedling raising device for protecting forest and grass resources comprises the following steps: Step 1: The rack is driven forward and backward by the second cylinder, changing the direction of rotation of the gear, so that the inclined surface of the guide groove presses the pin inward or outward, thereby gradually moving the two beams closer or farther away, and the two splints are closed and open. When closed, the soil is stored for planting and seedlings are raised. When opened, the roots of the trees can completely carry away the soil, without damaging the roots and improving the survival rate of transplanting. Step 2: The liquid storage capsule is moved horizontally and vertically by the moving mechanism, so that the vibrating rod is inserted into the soil at different positions. The vibration motor drives the vibrating rod to vibrate, which causes the soil to vibrate, loosening the soil and promoting the rooting of trees. When water and fertilizer are added to the liquid storage capsule, the water and fertilizer pressure squeezes the valve core slope, moving the two valve cores apart. The opening is opened, and water and fertilizer enter the soil, achieving the effect of precise fertilization and promoting tree growth. Step three: When it is necessary to loosen the soil according to the growth depth of the tree roots, the support plate is driven to move left and right by the hydraulic cylinder, so that the inclined surface of the limit groove squeezes the lifter upward or downward, so that the loosening mechanism and the lifter rise and fall synchronously. As the tree roots grow downward, the depth of the vibrating rod penetrating the soil gradually becomes shallower, which can loosen the soil without damaging the tree roots.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. Dynamic full-area loosening of soil to promote root growth: The present invention can drive the vibrating rod to move precisely to the top of the air hole at any position of the planting bed through the lateral sliding of the linear slider on the guide rail. Cooperating with the telescopic effect of the first cylinder, the conical vibrating rod quickly penetrates the air hole into the soil. The vibration motor drives the vibrating rod to vibrate at high frequency, and transmits resonance energy through the liquid storage capsule to reduce the friction between soil particles and loosen them. This mechanism can regularly loosen the seedling soil in all directions, breaking the problem of root growth obstruction caused by soil compaction in traditional seedling cultivation, significantly improving soil permeability, and providing space for tree roots to stretch, thereby accelerating the rooting speed and improving tree growth efficiency.

[0015] 2. Pressure-triggered precision fertilization improves nutrient utilization: When water and fertilizer are introduced into the reservoir through a pipe, the internal water pressure acts on the switch assembly on the outer wall of the vibrating rod. The inclined structure on the left side of the valve core overcomes the spring force under the pressure of water and fertilizer and moves outward, opening the openings on the left and right sides of the valve seat, allowing water and fertilizer to directly penetrate the soil around the roots. This design realizes the integrated "loosening soil-fertilizing" operation: Under normal circumstances, the spring keeps the valve core closed to prevent water and fertilizer leakage. Fertilization is triggered by pressure only when the vibrating rod is inserted into the soil, ensuring that nutrients act precisely on the root area, reducing the waste and loss of traditional broadcast fertilization, improving fertilizer utilization efficiency, and avoiding damage to the root system caused by excessive fertilization.

[0016] 3. Adaptive depth adjustment to protect roots from damage: When the hydraulic cylinder drives the support plate and push plate to move left and right, the stepped inclined limit groove on the outer wall of the push plate forms a linkage with the roller at the bottom of the lifter. When the tree roots extend downward as they grow, the push plate position is adjusted by the hydraulic cylinder. The inclined surface of the limit groove can squeeze the roller upward or downward, driving the lift plate to rise and fall along the slide rod, thereby synchronously adjusting the overall height of the loosening mechanism. This function makes the depth of the vibrating rod penetrating the soil dynamically shallower as the roots grow, ensuring that the shallow soil is continuously loosened to accommodate the growth of new roots, and preventing deep roots from being directly touched and damaged by the vibrating rod. This solves the problem that traditional fixed-depth loosening may damage mature roots, and achieves the intelligent root protection effect of "loosening the soil shallowly where the roots grow."

[0017] 4. Non-destructive soil transplanting improves tree survival rate: The second cylinder drives the gear through the meshing of the rack and gear. When the drive gear rotates, the arc-shaped guide groove on its outer wall squeezes the pins at both ends of the beam inward or outward, causing the front and rear symmetrical beams to drive the splints to open and close synchronously. During the seedling stage, the splints close to form a circular soil storage space, fixing the seedling position and maintaining the stability of the soil structure around the roots. During transplanting, the second cylinder drives the rack to move in the opposite direction. The gear rotates, causing the guide groove to push the pins away, and the beam drives the splints to open, allowing the tree roots to completely remove the wrapped soil clumps. This design completely solves the problem of root breakage caused by soil adhesion to the equipment in traditional seedling raising devices, ensuring that the roots are not torn by external forces during transplanting, maximizing the retention of rhizosphere soil and beneficial microorganisms, and significantly improving the survival rate of trees after transplanting. It is especially suitable for tree species such as poplar that are sensitive to transplanting damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the planting bed structure; Figure 3 for Figure 1 Enlarged view of point A in the middle; Figure 4 Schematic diagram of the driving mechanism structure; Figure 5 for Figure 1 Enlarged view of point B in the middle; Figure 6 Schematic diagram of the loosening mechanism structure; Figure 7 for Figure 1 Enlarged view of point C in the middle; Figure 8 This is a cross-sectional view of the switch assembly.

[0019] In the figure: 1. base; 2. lifter; 3. drive mechanism; 4. moving mechanism; 5. loosening mechanism; 6. planting bed; 7. air vent; 8. positioning mechanism; 21. slide rod; 22. lifting plate; 23. support rod; 24. roller; 31. hydraulic cylinder; 32. support plate; 33. push plate; 34. limit groove; 41. guide rail; 42. linear slider; 43. reinforcing rib; 44. first cylinder; 51. liquid storage capsule; 52. vibration motor; 53. vibration rod; 54. switch assembly; 541. valve seat; 542. opening; 543. spring; 544. valve core; 81. base; 82. guide rod; 83. beam; 84. splint; 85. latch; 86. gear; 87. guide groove; 88. second cylinder; 89. rack. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] The present invention provides a technical solution: a seedling raising device for protecting forest and grass resources, such as Figure 1-8 As shown, it includes a base 1, and lifters 2 are installed on the front and back sides of the upper surface of the base 1. A driving mechanism 3 is installed on the upper surface of the base 1, and the lifter 2 is pushed by the driving mechanism 3 to achieve lifting and lowering. A moving mechanism 4 is installed on the top of the lifter 2, and a loosening mechanism 5 is installed on the top of the moving mechanism 4. The loosening mechanism 5 is used to break up the seedling soil to promote the growth of tree roots. A planting bed 6 is installed on the top of the lifter 2, and a number of air holes 7 are equidistantly provided on the lower surface of the planting bed 6 from left to right. The air holes 7 enhance the air permeability of the bottom of the soil for tree cultivation. A positioning mechanism 8 is installed on the top of the planting bed 6. The positioning mechanism 8 plans the tree planting position to facilitate tree transplanting.

[0022] The lifter 2 includes four slide bars 21 mounted on the four corners of the upper surface of the base 1, and the top of the slide bars 21 is mounted on the bottom of the planting bed 6. The outer walls of the front and rear sets of slide bars 21 are sleeved with lift plates 22 that can be lifted and lowered. Support bars 23 are installed on the left and right sides of the lower surface of the lift plates 22, and rollers 24 are installed on the bottom of the support bars 23. The driving mechanism 3 includes two hydraulic cylinders 31 installed on the front and rear sides of the upper surface of the base 1. A support plate 32 is installed at the output end of the hydraulic cylinder 31. Push plates 33 are installed laterally at the front and rear ends of the left side wall of the support plate 32. The push plate 33 on the support plate 32 is pulled left and right by the hydraulic cylinder 31. A limiting groove 34 is provided on the outer wall of the push plate 33, and the roller 24 is inserted into the inner cavity of the limiting groove 34. The roller 24 rolls in the limiting groove 34 to reduce the mechanical wear of the lifting plate 22 during the lifting process. The limiting groove 34 is distributed in a stepped manner on the outer wall of the push plate 33, and the limiting groove 34 of the vertical section is inclined. The inclined surface of the limiting groove 34 can squeeze the roller 24 upward or downward, causing the lifting plate 22 to rise or fall.

[0023] Through the precise control of the hydraulic cylinder 31 and the stepped slope structure of the limit groove 34, the stepless height adjustment of the lifting plate 22 can be achieved, so that the depth of the loosening mechanism 5 is dynamically matched with the growth depth of the tree roots to avoid root damage; the four sliding rods 21 and the lifting plate 22 cooperate to form a stable quadrilateral support structure, ensuring that the planting bed 6 and the loosening mechanism 5 remain level during the lifting process to avoid shaking.

[0024] As a preferred solution, further, the moving mechanism 4 includes a guide rail 41 installed on the upper surface of the lifting plate 22, and a linear slider 42 is installed on the outer wall of the guide rail 41. The linear slider 42 is driven to move left and right on the guide rail 41 by air pressure, and a reinforcing rib 43 is installed on the top of the linear slider 42. The first cylinder 44 is installed at the front and rear ends of the lower surface of the reinforcing rib 43.

[0025] As a preferred solution, further, the loosening mechanism 5 includes a liquid storage capsule 51 installed on the top of the first cylinder 44, and the liquid storage capsule 51 introduces water and fertilizer through a pipeline, and vibration motors 52 are installed on the front and rear ends of the right side wall of the liquid storage capsule 51. A number of vibration rods 53 are installed at equal distances from front to back on the upper surface of the liquid storage capsule 51. The top of the vibration rod 53 is conical in shape, which facilitates the vibration rod 53 to pass through the air vent 7 and enter the planting soil. The power of the vibration motor 52 can make the liquid storage capsule 51 and the vibration rod 53 resonate, causing the soil to vibrate and loosen. A number of switch components 54 are installed at equal distances along the circumference of the outer wall of the vibration rod 53. The switch component 54 controls the discharge of water and fertilizer, increases nutrients in the soil, and promotes tree growth.

[0026] As a preferred solution, further, the switch assembly 54 includes a valve seat 541 embedded in the outer wall of the vibrating rod 53. Openings 542 are opened at the center positions on the left and right sides of the valve seat 541. Springs 543 and valve cores 544 are respectively inserted at the upper and lower ends of the inner cavity of the valve seat 541 from the inside to the outside. Under the elastic force of the spring 543, the two valve cores 544 are pushed together, allowing the valve cores 544 to close the opening. The inner side of the left wall of the valve core 544 is shaped like an inclined surface. Under the action of water and fertilizer pressure, the inclined surface of the valve core 544 is squeezed, causing the two valve cores 544 to be pressed away from each other, thereby opening the opening 542. Pressure-triggered fertilization: Through the dynamic balance between water pressure and the elastic force of spring 543, automatic control of "fertilization when pressure is present and sealing when no pressure is present" is achieved. No additional electronic control components are required, which reduces costs and increases reliability. The opening 542 is located in the area where the vibrating rod 53 is inserted into the soil, ensuring that water and fertilizer act directly around the root system and avoiding nutrient loss caused by traditional top spraying. The conical vibrating rod 53 can push away particles when inserted into the soil, and cooperate with the vibration function to reduce the risk of soil blocking the opening 542 and ensure that the fertilization channel is unobstructed.

[0027] As a preferred solution, further, the positioning mechanism 8 includes two left-right symmetrical bases 81 installed on the upper surface of the planting bed 6, a guide rod 82 is installed in the middle of the inner cavity of the base 81 along the front-to-back direction, and a plurality of groups of front-to-back symmetrical beams 83 are installed on the outer wall of the guide rod 82 from front to back. The inner sides of the front-to-back symmetrical beams 83 are equidistantly installed with plywood 84 from left to right. When the two plywood 84 are closed, they are circular in shape, forming a soil storage space. The two beams 83 gradually approach or move away, which can close and open the two plywood 84, providing space for tree growth, preventing soil from falling off the tree and damaging the root system, and improving the survival rate of tree transplantation. The plywood 84 corresponds to the position of the air vent 7, allowing tree seedlings to be raised above the air vent 7, ensuring that the vibration rod 5 3 can directly enter the soil after passing through the air vent 7. Pins 85 are installed at both ends of the crossbeam 83. Gears 86 are installed on the inner cavity of the base 81 from front to back through bearings. Two guide grooves 87 are provided on the outer wall of the gear 86, and the pins 85 are inserted into the inner cavity of the guide grooves 87. A second cylinder 88 is installed at the bottom of the front of the base 81. A rack 89 meshing with the gear 86 is installed at the output end of the second cylinder 88. The rack 89 moves back and forth under the drive of the second cylinder 88, thereby changing the rotation direction of the gear 86. The guide groove 87 is in the shape of an arc. The two guide grooves 87 rotate 180 degrees around the center point of the gear 86 and overlap. The inclined surface of the guide groove 87 can simultaneously squeeze the two pins 85 closer or farther away, thereby changing the distance between the two crossbeams 83. The positions of the splints 84 and the air holes 7 correspond one to one, ensuring that the position of each seedling on the planting bed 6 is precisely controllable, facilitating standardized operations such as loosening the soil and applying fertilizers in the later stages; the circular space formed when the splints 84 are closed can tightly wrap the soil around the roots of the seedlings, and the splints 84 are opened during transplanting to allow the soil clumps to be completely separated from the roots, solving the problem of root breakage caused by soil adhesion in traditional seedling cultivation, and improving the survival rate of transplantation; the symmetrical design of the gears 86 and the double guide grooves 87 ensures that the front and rear beams 83 move synchronously, avoiding deflection or jamming during the opening and closing of the splints 84, with smooth transmission and high structural strength, making it suitable for large-scale seedling cultivation scenarios; the opening and closing amplitude of the splint 84 is precisely controlled by the telescopic stroke of the second cylinder 88, which can adapt to the root sizes of seedlings of different specifications, has strong versatility and is easy to integrate into automated seedling production lines.

[0028] Working principle: Step 1: The second cylinder 88 drives the rack 89 to move forward and backward, changing the rotation direction of the gear 86, so that the inclined surface of the guide groove 87 presses the latch 85 inward or outward, thereby gradually moving the two beams 83 closer or farther away, and the two clamps 84 reach a closed and open state. When closed, the planting soil is stored for tree seedlings. When opened, the tree roots can completely carry away the soil, without damaging the roots and improving the transplant survival rate. Step 2: The liquid storage capsule 51 is moved horizontally and vertically by the moving mechanism 4, so that the vibrating rod 53 is inserted into the soil at different positions. The vibrating motor 52 drives the vibrating rod 53 to vibrate, which causes the soil to vibrate, loosening the soil and promoting the rooting of trees. When water and fertilizer are added to the liquid storage capsule 51, the water and fertilizer pressure squeezes the inclined surface of the valve core 544, causing the two valve cores 544 to move away, and the opening 542 is opened, allowing water and fertilizer to enter the soil, achieving the effect of precise fertilization and promoting tree growth. Step three, when it is necessary to loosen the soil according to the growth depth of the tree roots, the support plate 32 is driven to move left and right by the hydraulic cylinder 31, so that the inclined surface of the limit groove 34 squeezes the lifter 2 upward or downward, so that the loosening mechanism 5 and the lifter 2 are lifted and lowered synchronously. As the tree roots grow downward, the depth of the vibrating rod 53 penetrating the soil gradually becomes shallower, which can loosen the soil without damaging the tree roots.

[0029] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A seedling raising device for protecting forest and grass resources, comprising a base (1), characterized in that: A lifter (2) is installed on both the front and rear sides of the upper surface of the base (1), a driving mechanism (3) is installed on the upper surface of the base (1), and the lifter (2) is pushed by the driving mechanism (3) to achieve lifting, a moving mechanism (4) is installed on the top of the lifter (2), and a loosening mechanism (5) is installed on the top of the moving mechanism (4), and the soil for raising seedlings is broken up by the loosening mechanism (5) to promote the growth of tree roots, a planting bed (6) is installed on the top of the lifter (2), and a plurality of air holes (7) are opened on the lower surface of the planting bed (6) at equal intervals from left to right, and a positioning mechanism (8) is installed on the top of the planting bed (6), and the positioning mechanism (8) plans the tree planting position to facilitate tree transplanting; The driving mechanism (3) comprises two hydraulic cylinders (31) mounted on the front and rear sides of the upper surface of the base (1); a support plate (32) is mounted on the output end of the hydraulic cylinder (31); a push plate (33) is mounted transversely on both the front and rear ends of the left side wall of the support plate (32); and a limiting groove (34) is provided on the outer wall of the push plate (33).

2. A seedling raising device for protecting forest and grass resources according to claim 1, characterized in that: The limiting grooves (34) are distributed in a stepped manner on the outer wall of the push plate (33), and the limiting grooves (34) in the vertical section are arranged obliquely.

3. A seedling raising device for protecting forest and grass resources according to claim 2, characterized in that: The loosening mechanism (5) includes a liquid storage capsule (51) mounted on the top of the moving mechanism (4), and the liquid storage capsule (51) introduces water and fertilizer through a pipeline. A vibration motor (52) is mounted on both the front and rear ends of the right side wall of the liquid storage capsule (51). A plurality of vibration rods (53) are mounted on the upper surface of the liquid storage capsule (51) at equal intervals from front to back. The top of the vibration rod (53) is conical, which facilitates the vibration rod (53) to pass through the air vent (7) and enter the planting soil. The power of the vibration motor (52) can make the liquid storage capsule (51) and the vibration rod (53) resonate, causing the soil to vibrate and loosen. A plurality of switch components (54) are mounted on the outer wall of the vibration rod (53) at equal intervals along the circumferential direction.

4. A seedling raising device for protecting forest and grass resources according to claim 3, characterized in that: The switch assembly (54) includes a valve seat (541) embedded in the outer wall of the vibrating rod (53), and openings (542) are provided at the center positions on the left and right sides of the valve seat (541). The upper and lower ends of the inner cavity of the valve seat (541) are respectively connected with springs (543) and valve cores (544) from the inside to the outside. Under the action of the elastic force of the spring (543), the two valve cores (544) are pushed close to each other, allowing the valve cores (544) to close the openings.

5. A seedling raising device for protecting forest and grass resources according to claim 4, characterized in that: The inner side of the left side wall of the valve core (544) is in the shape of an inclined surface.

6. A seedling raising device for protecting forest and grass resources according to claim 5, characterized in that: The positioning mechanism (8) includes two left-right symmetrical bases (81) mounted on the upper surface of the planting bed (6), a guide rod (82) is mounted in the middle of the inner cavity of the base (81) along the front-to-back direction, and a plurality of groups of front-to-back symmetrical crossbeams (83) are mounted on the outer wall of the guide rod (82) from front to back. Clamps (84) are mounted on the inner side of the front-to-back symmetrical crossbeams (83) at equal distances from left to right. When the two clamps (84) are closed, they are circular in shape, forming a soil storage space. Pins ( 85), the inner cavity of the base (81) is equipped with gears (86) from front to back through bearings, the outer wall of the gear (86) is provided with two guide grooves (87), and the pin (85) is inserted into the inner cavity of the guide groove (87), and a second cylinder (88) is installed at the bottom of the front of the base (81), and a rack (89) meshing with the gear (86) is installed at the output end of the second cylinder (88). The rack (89) moves forward and backward under the drive of the second cylinder (88), thereby changing the rotation direction of the gear (86).

7. A seedling raising device for protecting forest and grass resources according to claim 6, characterized in that: The clamping plate (84) corresponds to the position of the vent hole (7).

8. The seedling raising device for protecting forest and grass resources according to claim 7, characterized in that: The guide groove (87) is in an arc shape, and the two guide grooves (87) overlap by rotating 180 degrees with the center point of the gear (86) as the center of the circle.

9. A seedling raising method for protecting forest and grass resources, which is applied to a seedling raising device for protecting forest and grass resources according to claim 8, characterized in that: The following steps are involved: Step 1: The rack (89) is driven forward and backward by the second cylinder (88), changing the rotation direction of the gear (86), so that the inclined surface of the guide groove (87) presses the latch (85) inward or outward, thereby gradually moving the two beams (83) closer or farther away, and the two splints (84) reach a closed and open state. When closed, the planting soil is stored for tree seedling cultivation. When opened, the tree roots can completely carry away the soil without damaging the roots, thereby improving the transplant survival rate. Step 2: The liquid storage capsule (51) is moved horizontally and vertically by the moving mechanism (4), so that the vibrating rod (53) is inserted into the soil at different positions. The vibrating motor (52) drives the vibrating rod (53) to vibrate. The vibrating rod (53) causes the soil to vibrate, loosening the soil and promoting the rooting of trees. When water and fertilizer are added to the liquid storage capsule (51), the water and fertilizer pressure squeezes the inclined surface of the valve core (544), causing the two valve cores (544) to move away, and the opening (542) is opened, so that the water and fertilizer enter the soil, achieving the effect of precise fertilization and promoting the growth of trees. Step three, when it is necessary to loosen the soil according to the growth depth of the tree roots, the support plate (32) is driven to move left and right by the hydraulic cylinder (31), so that the inclined surface of the limit groove (34) presses the lifter (2) upward or downward, so that the loosening mechanism (5) and the lifter (2) are lifted and lowered synchronously. As the tree roots grow downward, the penetration depth of the vibrating rod (53) into the soil gradually becomes shallower, so that the soil can be loosened without damaging the tree roots.

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