Experimental seedling raising device for corn planting

Abstract

The invention discloses an experimental seedling raising device for corn planting, and belongs to the technical field of experimental seedling raising. An experimental seedling raising device for corn planting comprises a bottom plate and a planting box fixedly connected to the bottom plate, and further comprises a support fixedly connected to the bottom plate, a lifting plate is installed on the support in a sliding mode, a plurality of planting grooves are formed in the planting box, a plurality of planting parts are arranged on the lifting plate corresponding to the planting grooves, and the planting parts correspond to the planting grooves. The top plate is fixedly connected to the support, a storage tank is fixedly connected to the top plate, and a discharging part for controlling the storage tank to discharge materials is arranged on the lifting plate; through cooperation of the matching rod and the threaded rod, accurate sowing depth control is realized, uniform distribution of seeds in the planting groove and a proper growth environment are ensured, and accurate control of softness and humidity of soil in the planting groove is realized, so that optimal growth conditions are provided for the seeds.

Description

Technical Field

[0001] The invention relates to the technical field of experimental seedling cultivation, and in particular to an experimental seedling cultivation device for corn planting. Background Art

[0002] In modern agricultural technology, experimental seedling raising devices are of great significance for improving the planting efficiency and quality of crops. The experimental seedling raising device for corn planting is designed to meet the needs of the seedling raising link in corn planting experiments. It usually integrates multiple functions to ensure that corn seeds grow in a suitable environment and achieve the expected seedling raising effect. The experimental seedling raising device for corn planting is efficient, controllable, economical and has broad application prospects. In corn planting experiments, it can provide researchers with a stable, controllable and efficient seedling raising environment, which helps promote the innovation and development of corn planting technology.

[0003] Traditional seedling raising methods often rely on a lot of manual operations, which is not only inefficient, but also difficult to ensure the consistency and stability of crop growth. When doing corn planting experiments, it is necessary to manually dig holes in the soil in each planting trough and place different types of seeds in the planting holes for planting. In the process of digging holes, it is impossible to achieve the planting depth of each seed and the softness of the soil in the pit, which will cause inaccurate test results. During the planting test, it is also necessary to manually pour an appropriate amount of nutrient solution into each planting trough, which affects work efficiency. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that the prior art cannot automatically dig holes, sow seeds and irrigate the planting troughs, resulting in differences in the depth of the planting troughs and the softness of the soil after filling the holes, leading to inaccurate detection results, and to propose an experimental seedling raising device for corn planting.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An experimental seedling raising device for corn planting comprises a bottom plate and a planting box fixedly connected to the bottom plate, and further comprises: a bracket fixedly connected to the bottom plate, wherein a lifting plate is slidably mounted on the bracket, a plurality of planting grooves are provided in the planting box, a planting portion aligned with the planting grooves up and down is provided, and a top plate fixedly connected to the bracket, wherein a storage tank is fixedly connected to the top plate, and a discharge portion for controlling the opening and closing of a discharge port of the storage tank is provided on the lifting plate.

[0007] Preferably, the planting part includes a plurality of cooperating rods rotatably installed on both sides of the lifting plate, the cooperating rods are fixedly connected with an adjustment track, a slide plate is slidably installed in the adjustment track, a drill bit is fixedly connected to the slide plate, and a material guide block is fixedly connected to the drill bit.

[0008] In order to make several cooperating rods rotate synchronously, preferably, several threaded rods corresponding to the cooperating rods are fixedly connected to the top plate, the cooperating rods are meshingly installed on the threaded rods, and the cooperating rods are fixedly connected with linkage pulleys, and several of the linkage pulleys are installed through linkage belt transmission.

[0009] In order to drive the matching rod to rotate and lift, further, driving pulleys are rotatably installed on both sides of the lifting plate, and the two driving pulleys are installed through transmission belts. A driving motor is fixedly connected to the lifting plate, and the output shaft of the driving motor is fixedly connected to any driving pulley, wherein the two driving pulleys are fixedly connected to a transmission shaft, and the transmission shaft is fixedly connected to a transmission pulley, and the transmission pulley is transmission-connected to the linkage pulley through a linkage belt.

[0010] In order to enable the drill bit to open and discharge the material, further, the discharge part includes a guide rod fixedly connected to the adjusting track, a support spring fixedly connected to the guide rod, and a free end of the support spring fixedly connected to a slide plate, wherein a discharge port is fixedly connected to the threaded rod, the discharge end of the threaded rod is connected to the discharge port, the feed end of the threaded rod is fixedly connected to the storage tank, the discharge port is a conical setting that is narrow at the top and wide at the bottom, and an abutment plate is fixedly connected to the slide plate, and the abutment plate is fitted against the outer wall of the discharge port.

[0011] In order to release the seeds quantitatively, further, a discharge valve is rotatably installed in the threaded rod, a connecting rod is fixedly connected to the discharge valve, the connecting rod is rotatably installed on the threaded rod, a rotating gear is fixedly connected to the connecting rod, a movable tooth plate is fixedly connected to the lifting plate, and the movable tooth plate is meshed with the rotating gear.

[0012] In order to bury the seeds in the soil and flatten it, further, two rocker arms are rotatably installed on both sides of the outer wall of the discharge port, a piston plate is slidably installed in the rocker arm, and a wheel axle is fixedly connected to the two piston plates on the same side, and a roller is rotatably installed on the wheel axle, wherein, the two rocker arms on the same side are fixedly connected with an arc plate, and tension springs are fixedly connected to the two arc plates, and the arc plates cooperate with the slide plate, and a return spring is fixedly connected in the rocker arm, and the free end of the return spring is fixedly connected to the piston plate.

[0013] In order to provide a water source for the nozzle, further, a water tank is fixedly connected to the bracket, a mounting frame is fixedly connected to the planting box, a connecting pipe is rotatably installed in the mounting frame, a water outlet pipe is fixedly connected to the water tank, the water outlet pipe is fixedly connected to the connecting pipe, and a nozzle is fixedly connected to the connecting pipe.

[0014] In order to automatically discharge water, further, the upper and lower moving surfaces of the lifting plate are fixedly connected to a folding airbag, a fixed plate is fixedly connected to the folding airbag, the fixed plate is fixedly connected to the bracket, and the air delivery end of the folding airbag is fixedly connected to the water tank, wherein a slide groove is opened in the water tank, a push plate is slidably installed on the slide groove, and the push plate cooperates with the folding airbag.

[0015] In order to expand the water spraying range, further, a lifting groove is opened on the bracket, the lifting plate is slidably installed in the lifting groove, an extension rod is fixedly connected to the lifting plate, a rotating plate is rotatably installed on the extension rod, and the rotating plate is rotatably installed on the connecting pipe.

[0016] Compared with the prior art, the present invention provides an experimental seedling raising device for corn planting, which has the following beneficial effects:

[0017] 1. The experimental seedling raising device for corn planting realizes precise sowing depth control through the cooperation between the matching rod and the threaded rod, ensuring the uniform distribution of seeds in the planting trough and a suitable growth environment. The cooperation mechanism of the matching rod and the threaded rod drives the lifting plate to rise and fall, realizing precise control of the softness and humidity of the soil in the planting trough, thereby providing the best growth conditions for the seeds. The coordinated work of the discharge part and the drill bit on the lifting plate ensures the accurate placement of seeds and uniform coverage of soil, further improving the uniformity and quality of seedling raising.

[0018] 2. The experimental seedling raising device for corn planting ensures the water supply required for crop growth through the cooperation of the water tank and the folding airbag. When the lifting plate is raised and lowered to compress the folding airbag, the water in the water tank is transported to the connecting pipe through the outlet pipe, and then evenly sprayed into the planting trough by the nozzle on the connecting pipe, ensuring uniform distribution of water.

[0019] 3. The experimental seedling raising device for corn planting connects the lifting plate to the connecting pipe through a rotating plate, so that the water spraying device can cover a wider area, thereby improving the utilization efficiency of water resources, further expanding the water spraying range, and meeting the water demand under different planting densities.

[0020] 4. The experimental seedling raising device for corn planting realizes precise control of the discharge valve through the cooperation between the moving tooth plate and the rotating gear, ensuring the quantitative release of seeds and avoiding seed waste and uneven growth.

[0021] 5. The experimental seedling raising device for corn planting realizes the leveling work after the seeds are buried in the soil through the linkage of the rocker arm and the piston plate, ensuring the full contact between the seeds and the soil and providing a good foundation for the growth of the seeds. The movement of the rocker arm drives the piston plate to move up and down. Through the rolling of the roller, the seeds are evenly buried in the soil and lightly compacted, ensuring the stability and germination rate of the seeds. At the same time, the cooperation of the arc plate and the slide plate, as well as the action of the reset spring, ensure that the rocker arm can quickly return to the initial position after completing an operation, thereby improving work efficiency.

[0022] The parts not involved in the device are the same as the existing technology or can be implemented by the existing technology. The present invention realizes precise sowing depth control through the cooperation between the matching rod and the threaded rod, ensures the uniform distribution of seeds in the planting trough and a suitable growth environment, and realizes precise control of the softness and humidity of the soil in the planting trough, thereby providing the best growth conditions for the seeds. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of an experimental seedling raising device for corn planting proposed by the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of a storage tank of an experimental seedling raising device for corn planting proposed by the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of a lifting plate of an experimental seedling raising device for corn planting proposed by the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of the matching rods of an experimental seedling raising device for corn planting proposed by the present invention;

[0027] Figure 5 This is a schematic diagram of the internal structure of a threaded rod of an experimental seedling raising device for corn planting proposed by the present invention;

[0028] Figure 6 The invention provides an experimental seedling raising device for corn planting Figure 3 Enlarged view of point A in the middle;

[0029] Figure 7 This is a schematic diagram of the internal structure of a rocker arm of an experimental seedling raising device for corn planting proposed by the present invention;

[0030] Figure 8 A schematic diagram of the planting trough structure of an experimental seedling raising device for corn planting proposed by the present invention;

[0031] Fig. 9 The invention provides an experimental seedling raising device for corn planting Figure 8 Enlarged view of point B in the middle;

[0032] Fig.10 This is a schematic diagram of the internal structure of a water tank of an experimental seedling raising device for corn planting proposed by the present invention.

[0033] In the figure: 1, bottom plate; 11, bracket; 12, top plate; 13, lifting slot; 14, growth lamp; 2, planting box; 21, planting slot; 22, mounting frame; 3, lifting plate; 31, driving motor; 32, driving pulley; 33, transmission belt; 34, transmission shaft; 35, driving pulley; 36, linkage pulley; 37, linkage belt; 38, matching rod; 39, adjustment track; 310, slide plate; 311, abutment plate; 312, drill bit; 313, guide block; 314, guide rod; 315, support Spring; 316, movable tooth plate; 317, extension rod; 318, rotating plate; 319, connecting pipe; 320, nozzle; 4, storage tank; 41, threaded rod; 42, discharge port; 43, rotating gear; 44, connecting rod; 45, discharge valve; 46, rocker arm; 47, arc plate; 48, piston plate; 49, axle; 410, roller; 411, return spring; 412, tension spring; 5, water tank; 51, slide; 52, push plate; 53, water outlet pipe; 6, folding airbag; 61, fixed plate. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0036] Embodiment 1:

[0037] Reference Figure 1-Figure 8, an experimental seedling raising device for corn planting, comprising a base plate 1 and a planting box 2 fixedly connected to the base plate 1, and also comprising: a bracket 11 fixedly connected to the base plate 1, wherein a lifting plate 3 is slidably mounted on the bracket 11, so as to adjust the relative position of the planting part and the planting groove 21, a plurality of planting grooves 21 are provided in the planting box 2, the number of the planting grooves 21 is 4-16, and the preferred number of the present application is 6, which is used to plant corn seeds or seedlings, the lifting plate 3 is provided with a planting part aligned with the planting groove 21 up and down, and is used to dig pits for the soil in the planting groove 21, and a top plate 12 fixedly connected to the bracket 11, wherein a storage tank 4 is fixedly connected to the top plate 12, and the plurality of storage tanks 4 are used to store different kinds of corn seeds for planting experiments, and a discharge part for controlling the opening and closing of the discharge port of the storage tank 4 is provided on the lifting plate 3, so that the corn seeds are automatically placed in the pit for planting, and a growth lamp 14 is fixedly connected to the top plate 12 to provide necessary light for the corn seeds or seedlings and promote their growth.

[0038] Reference Figure 1-Figure 6 The planting part includes a plurality of matching rods 38 rotatably mounted on both sides of the lifting plate 3. The number of matching rods 38 is consistent with the number of planting grooves 21, which is set to 6. When the matching rods 38 rotate, they can move up and down along the threaded rods 41. An adjusting track 39 is fixedly connected to the matching rods 38. A slide plate 310 is slidably mounted in the adjusting track 39 and can move along the adjusting track 39. A drill bit 312 is fixedly connected to the slide plate 310 for digging a hole for the soil in the planting groove 21. A guide block 313 is fixedly connected to the drill bit 312. The guide block 313 is set to an inclined shape. When digging a hole, a track for sliding up and down is provided for the soil, so that the soil moves upward along the guide block 313 to the surroundings of the planting pit. A plurality of threaded rods 41 corresponding to the matching rods 38 are fixedly connected to the top plate 12 to realize the lifting function. The matching rods 38 are engaged It is installed on the threaded rod 41, and a linkage pulley 36 is fixedly connected to the matching rod 38. Several linkage pulleys 36 are installed through linkage belts 37 for transmission, so that all matching rods 38 can rotate synchronously. Driving pulleys 32 are rotatably installed on both sides of the lifting plate 3. The two driving pulleys 32 are installed through transmission belts 33 for transmission, ensuring that the two driving pulleys 32 rotate synchronously. A driving motor 31 is fixedly connected to the lifting plate 3, and the output shaft of the driving motor 31 is fixedly connected to any driving pulley 32, wherein the two driving pulleys 32 are fixedly connected with a transmission shaft 34 to provide power for the entire transmission system, and a driving pulley 35 is fixedly connected to the transmission shaft 34, and the driving pulley 35 is connected to the linkage pulley 36 through a linkage belt 37 for transmission, so as to transmit the power of the driving motor 31 to all matching rods 38.

[0039] When the driving motor 31 is started, it drives any one of the driving pulleys 32 to rotate, and the other driving pulley 32 is rotated synchronously through the transmission belt 33. The rotation of the two driving pulleys 32 is transmitted to the linkage pulley 36 through the transmission shaft 34 and the transmission pulley 35, and then drives all the matching rods 38 to rotate synchronously. Since the matching rods 38 are engaged with the threaded rod 41, they move up and down along the threaded rod 41. At the same time, the slide plate 310 slides in the adjustment track 39, so that the drill bit 312 can dig a hole in the soil in the planting groove 21 according to a predetermined trajectory, which is convenient for sowing corn seeds.

[0040] Reference Figure 1-Figure 7The discharge part includes a guide rod 314 fixedly connected to the adjustment track 39, which provides additional support and guidance for the slide plate 310. A support spring 315 is fixedly connected to the guide rod 314. The free end of the support spring 315 is fixedly connected to the slide plate 310, which is used to provide buffering and reset force when the slide plate 310 moves. Among them, a discharge port 42 is fixedly connected to the threaded rod 41, and the discharge end of the threaded rod 41 is connected to the discharge port 42. The feed end of the threaded rod 41 is fixedly connected to the storage tank 4, which is used to transport the material in the storage tank 4 to the planting trough 21. The discharge port 42 is a conical setting with a narrow upper part and a wide lower part. The slide plate 310 is fixedly connected to an abutment plate 311, and the abutment plate 31 1 is fitted on the outer wall of the discharge port 42. When the matching rod 38 drives the abutment plate 311 to move downward, it interacts with the discharge port 42. The abutment plate 311 drives the slide plate 310 to slide along the shape of the discharge port 42. When the slide plate 310 slides, the drill bit 312 opens to both sides. A discharge valve 45 is rotatably installed in the threaded rod 41, which is used to quantitatively discharge the corn seeds in the storage tank 4. The discharge valve 45 is fixedly connected to the connecting rod 44, which is rotatably installed on the threaded rod 41. The connecting rod 44 is fixedly connected to the rotating gear 43. The lifting plate 3 is fixedly connected to the moving tooth plate 316, which is meshed with the rotating gear 43. When the moving tooth plate 316 is installed, When moving, it will drive the rotating gear 43 and the discharge valve 45 to rotate. A material receiving trough is provided on the discharge valve 45. When the discharge valve 45 rotates, the corn seeds falling out of the storage tank 4 fall into the planting pit dug by the drill bit 312 from the material receiving trough on the discharge valve 45. Two rocker arms 46 are rotatably installed on both sides of the outer wall of the discharge port 42. A piston plate 48 is slidably installed in the rocker arm 46. A wheel axle 49 is fixedly connected to the two piston plates 48 on the same side. A roller 410 is rotatably installed on the wheel axle 49. When the lifting plate 3 descends, the roller 410 rolls on the soil to make the soil more compact. When the lifting plate 3 rises, the soil thrown out when the drill bit 312 drills the pit is rolled out through the roller 410. The roller 410 is dynamically filled into the pit and the planting pit is filled up, wherein the two rocker arms 46 on the same side are fixedly connected with an arc plate 47, and the two arc plates 47 are fixedly connected with a tension spring 412, which provides a force when the roller 410 rolls on the soil, so that the roller 410 has a better flattening effect, and the arc plate 47 cooperates with the slide plate 310 to limit the swing range of the rocker arm 46 when the slide plate 310 moves to both sides to expand the planting pit. A return spring 411 is fixedly connected in the rocker arm 46, and the free end of the return spring 411 is fixedly connected to the piston plate 48. The return spring 411 provides elastic support to the piston plate 48, so that the roller 410 can always fit the soil surface when the rocker arm 46 swings.

[0041] Embodiment 2:

[0042] Reference Figure 8-Figure 10, which is basically the same as Example 1, and further, a specific implementation plan for regulating water spraying after corn seeds are planted is specifically added.

[0043] The bracket 11 is fixedly connected with a water tank 5 for storing water and nutrient solution required for irrigation. The planting box 2 is fixedly connected with a mounting frame 22, and a connecting pipe 319 is rotatably installed in the mounting frame 22. The water tank 5 is fixedly connected with a water outlet pipe 53, and the water outlet pipe 53 is fixedly connected to the connecting pipe 319. The water outlet pipe 53 is used to transport the liquid in the water tank 5 to the connecting pipe 319. The connecting pipe 319 is fixedly connected with a nozzle 320 for spraying the liquid in the connecting pipe 319 onto the planting soil in the planting box 2 to provide nutrients for the corn seeds. The upper and lower moving surfaces of the lifting plate 3 are fixedly connected with a folding airbag 6. Regardless of whether the lifting plate 3 moves upward or downward, the folding airbag 6 can be compressed to make the folding airbag 6 vent. The gas generated by the venting The water in the water tank 5 is pressed to discharge water, a fixing plate 61 is fixedly connected to the folding airbag 6, and the fixing plate 61 is fixedly connected to the bracket 11. The air delivery end of the folding airbag 6 is fixedly connected to the water tank 5, wherein a slide groove 51 is provided in the water tank 5, and a push plate 52 is slidably installed on the slide groove 51. The push plate 52 cooperates with the folding airbag 6 to compress the water in the water tank 5 when the push plate 52 moves, so that the water in the water tank 5 moves into the connecting pipe 319. A lifting groove 13 is provided on the bracket 11, and the lifting plate 3 is slidably installed in the lifting groove 13. An extension rod 317 is fixedly connected to the lifting plate 3, and a rotating plate 318 is rotatably installed on the extension rod 317. The rotating plate 318 is rotatably installed on the connecting pipe 319, and is used to adjust the spraying direction of the connecting pipe 319 and the nozzle 320.

[0044] In the present invention, when the driving motor 31 is started, it transmits power to the matching rod 38 through the driving motor 31, so that the matching rod 38 moves up and down along the threaded rod 41, and the movement of the matching rod 38 drives the slide plate 310 to slide in the adjustment track 39. At the same time, the drill bit 312 on the slide plate 310 digs a hole in the soil in the planting groove 21 according to a predetermined trajectory to prepare for the sowing of corn seeds. During the sliding process of the slide plate 310, the abutment plate 311 interacts with the discharge port 42 to guide the slide plate 310 to slide along the shape of the discharge port 42. When the matching rod 38 drives the abutment plate 311 to move downward, the slide plate 310 drives the drill bit 312 to open to both sides, thereby expanding the planting pit. At the same time, the discharge valve 45 in the threaded rod 41 quantitatively releases the corn seeds in the storage tank 4, and the precise seed delivery is achieved through the cooperation of the connecting rod 44 and the rotating gear 43.

[0045] When the lifting plate 3 descends, the roller 410 rolls on the soil to make the soil more compact. When the lifting plate 3 rises, the roller 410 rolls the soil dug out by the drill bit 312 into the pit and fills the planting pit. The cooperation of the rocker arm 46 and the arc plate 47 limits the swing range of the rocker arm 46 and ensures the shape and size of the planting pit. The return spring 411 on the piston plate 48 provides elastic support for the rocker arm 46 to ensure that the roller 410 always fits the soil surface. The water tank 5 fixedly connected to the bracket 11 stores the water and nutrient solution required for irrigation. Through the up and down movement of the lifting plate 3, the folded airbag 6 is compressed, so that the water in the water tank 5 moves to the connecting pipe 319 through the push plate 52. The nozzle 320 on the connecting pipe 319 sprays the liquid onto the planting soil in the planting box 2 to provide nutrients for the corn seeds. Through the cooperation of the extension rod 317 and the rotating plate 318, the spraying direction of the connecting pipe 319 and the nozzle 320 can be adjusted to ensure uniform distribution of water.

[0046] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An experimental seedling raising device for corn planting, comprising a base plate (1) and a planting box (2) fixedly connected to the base plate (1), characterized in that: Also includes: a bracket (11) fixedly connected to the base plate (1), Wherein, a lifting plate (3) is slidably mounted on the bracket (11), a plurality of planting grooves (21) are provided in the planting box (2), and a planting portion aligned with the planting grooves (21) is provided on the lifting plate (3); a top plate (12) fixedly connected to the bracket (11), Wherein, a material storage tank (4) is fixedly connected to the top plate (12), and a material discharge portion for controlling the opening and closing of a discharge port of the material storage tank (4) is provided on the lifting plate (3).

2. The experimental seedling raising device for corn planting according to claim 1, characterized in that: The planting part comprises a plurality of matching rods (38) rotatably mounted on both sides of the lifting plate (3); the matching rods (38) are fixedly connected to an adjustment track (39); a slide plate (310) is slidably mounted in the adjustment track (39); a drill bit (312) is fixedly connected to the slide plate (310); and a material guide block (313) is fixedly connected to the drill bit (312).

3. The experimental seedling raising device for corn planting according to claim 2, characterized in that: A plurality of threaded rods (41) corresponding to the matching rods (38) are fixedly connected to the top plate (12); the matching rods (38) are meshedly mounted on the threaded rods (41); a linkage pulley (36) is fixedly connected to the matching rods (38); and the plurality of linkage pulleys (36) are installed via a linkage belt (37).

4. The experimental seedling raising device for corn planting according to claim 3, characterized in that: Both sides of the lifting plate (3) are rotatably mounted with driving pulleys (32), the two driving pulleys (32) are driven by a transmission belt (33), a driving motor (31) is fixedly connected to the lifting plate (3), and the output shaft of the driving motor (31) is fixedly connected to any driving pulley (32). Wherein, the two driving pulleys (32) are fixedly connected with a transmission shaft (34), the transmission shaft (34) is fixedly connected with a transmission pulley (35), and the transmission pulley (35) is transmission-connected with a linkage pulley (36) via a linkage belt (37).

5. The experimental seedling raising device for corn planting according to claim 3, characterized in that: The discharge portion comprises a guide rod (314) fixedly connected to the adjusting track (39), a support spring (315) fixedly connected to the guide rod (314), and a free end of the support spring (315) fixedly connected to the slide plate (310). The threaded rod (41) is fixedly connected with a discharge port (42), the discharge end of the threaded rod (41) is connected to the discharge port (42), the feed end of the threaded rod (41) is fixedly connected to the storage tank (4), the discharge port (42) is tapered and narrow at the top and wide at the bottom, and the slide plate (310) is fixedly connected with an abutment plate (311), which is arranged in close contact with the outer wall of the discharge port (42).

6. The experimental seedling raising device for corn planting according to claim 5, characterized in that: A discharge valve (45) is rotatably mounted inside the threaded rod (41), a connecting rod (44) is fixedly connected to the discharge valve (45), the connecting rod (44) is rotatably mounted on the threaded rod (41), a rotating gear (43) is fixedly connected to the connecting rod (44), a movable tooth plate (316) is fixedly connected to the lifting plate (3), and the movable tooth plate (316) is meshed with the rotating gear (43).

7. The experimental seedling raising device for corn planting according to claim 5, characterized in that: Two rocker arms (46) are rotatably mounted on both sides of the outer wall of the discharge port (42), a piston plate (48) is slidably mounted inside the rocker arms (46), a wheel axle (49) is fixedly connected to the two piston plates (48) on the same side, and a roller (410) is rotatably mounted on the wheel axle (49). Wherein, the two rocker arms (46) on the same side are fixedly connected with an arc plate (47), the two arc plates (47) are fixedly connected with a tension spring (412), the arc plate (47) cooperates with the slide plate (310), a return spring (411) is fixedly connected inside the rocker arm (46), and the free end of the return spring (411) is fixedly connected to the piston plate (48).

8. The experimental seedling raising device for corn planting according to claim 1, characterized in that: The support (11) is fixedly connected to a water tank (5), the planting box (2) is fixedly connected to a mounting frame (22), a connecting pipe (319) is rotatably mounted in the mounting frame (22), the water tank (5) is fixedly connected to a water outlet pipe (53), the water outlet pipe (53) is fixedly connected to the connecting pipe (319), and a nozzle (320) is fixedly connected to the connecting pipe (319).

9. The experimental seedling raising device for corn planting according to claim 8, characterized in that: The upper and lower moving surfaces of the lifting plate (3) are fixedly connected to a folding airbag (6), a fixing plate (61) is fixedly connected to the folding airbag (6), the fixing plate (61) is fixedly connected to the bracket (11), and the air delivery end of the folding airbag (6) is fixedly connected to the water tank (5). Wherein, a slide groove (51) is provided in the water tank (5), a push plate (52) is slidably mounted on the slide groove (51), and the push plate (52) cooperates with the folding airbag (6).

10. The experimental seedling raising device for corn planting according to claim 9, characterized in that: The bracket (11) is provided with a lifting groove (13), the lifting plate (3) is slidably installed in the lifting groove (13), the lifting plate (3) is fixedly connected with an extension rod (317), the extension rod (317) is rotatably installed with a rotating plate (318), and the rotating plate (318) is rotatably installed on the connecting pipe (319).

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