A device and method for no-till overseeding of degraded grasslands

Abstract

The application belongs to the technical field of agricultural equipment, and discloses a no-tillage supplemental seeding device for degraded grassland, which comprises a first support frame, the bottom end of the first support frame is fixed with a first traveling wheel, and one end of a storage box is fixed with a slotting mechanism. The application also provides a no-tillage supplemental seeding method for degraded grassland, which comprises the following steps: S1, adding seeds into two groups of arranging grooves in the interior of the storage box, and advancing through a push rod pushing device. The cooperation of the structures such as the first sprocket, the chain and the second sprocket enables the device to realize the pure mechanical synchronous linkage of the advancing action and the seed sowing operation, guarantees the matching of the seeding uniformity and the advancing speed of the no-tillage supplemental seeding operation, the first sprocket is fixed to the traveling wheel rotating shaft and rotates synchronously with the device advancing, which can guarantee the accurate matching of the seed sowing rotating speed and the advancing speed, avoids the problems of missing seeding and over-seeding, and finally achieves the effects of improving the seed sowing synchronization and the seeding amount control precision, simplifying the device structure and guaranteeing the quality of the no-tillage supplemental seeding operation.

Description

Technical Field

[0001] This invention belongs to the field of agricultural equipment technology, specifically a no-till reseeding device and method for degraded grassland. Background Technology

[0002] No-till reseeding is one of the most widely used core technologies for the ecological restoration of degraded grasslands. This technology eliminates the need for full tillage of degraded grasslands. By reseeding suitable native grass species while preserving the original grassland vegetation and soil structure, it rapidly increases grassland vegetation cover, optimizes plant community structure, and restores grassland productivity and ecological functions. Simultaneously, it effectively avoids secondary ecological problems such as soil erosion and water loss caused by tillage operations. It is particularly suitable for the restoration needs of degraded grasslands in fragile ecological zones such as arid and semi-arid regions of northern my country and the high-altitude cold regions of the Qinghai-Tibet Plateau. The reseeding device is the core equipment for realizing the large-scale, efficient, and standardized application of this technology. Its performance directly determines the germination rate, seedling establishment rate, and final grassland restoration effect of the reseeded seeds. Existing no-till reseeding devices for degraded grasslands have insufficient rolling capacity of the rollers, lack synchronous vibration function, are difficult to adapt to complex surfaces containing straw residues, have poor compaction effect, and have poor synchronization of seed metering mechanisms. Independent drive is costly and prone to uneven seeding. Linked systems are prone to seed jamming and blockage, and lack a synchronous seed-assisted seed placement structure. Airflow assistance requires additional power, has poor synchronization, and makes it difficult to guarantee seed germination rate.

[0003] Publication No. CN115316075B discloses a grassland no-till reseeding machine and its ditching device. The grassland no-till reseeding machine includes a ditching device, which comprises: a mounting frame; a longitudinal root cutting mechanism, including a root cutting disc shaft and a root cutting disc, the root cutting disc shaft being mounted on the front end of a connecting plate; the root cutting disc being connected to the root cutting disc shaft via a bearing seat, the bearing seat being mounted on the root cutting disc shaft and rotating relative to the root cutting disc shaft; a ditch opener, mounted on the connecting plate and located behind the root cutting disc; a seed metering tube, mounted on the mounting frame and located behind the ditch opener; and a soil return mechanism, mounted on the mounting frame and located behind the seed metering tube, including a soil return roller and a contouring mechanism, the contouring mechanism being connected to the mounting frame and the soil return roller respectively; wherein, the center lines of the longitudinal root cutting mechanism, the ditch opener, the seed metering tube, and the soil return mechanism are located in the same plane as the center line of the mounting frame and are symmetrically arranged left and right; the longitudinal root cutting mechanism, the ditch opener, the seed metering tube, and the soil return mechanism move together with the mounting frame and act sequentially on the same seed furrow.

[0004] This device enables continuous coaxial operations of root cutting, trenching, seeding, and soil backfilling, ensuring consistency in seeding and trenching operations and improving the continuity of no-till reseeding. However, it cannot complete the vibration pre-leveling of straw residues and complex surfaces, and the seeding is uneven due to the lack of moving linkage. It also lacks a synchronous airflow-assisted seeding structure, making it difficult to guarantee seed germination rate. Therefore, a no-till reseeding device and method for degraded grassland is proposed, which can realize integrated operation of vibration leveling, linked seeding, and synchronous airflow-assisted seeding, significantly improving the reseeding germination rate and grassland restoration effect. Summary of the Invention

[0005] To address the problems mentioned in the background section, the present invention provides a no-till reseeding device and method for degraded grassland.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a no-till reseeding device for degraded grassland, comprising a first support frame, a first traveling wheel fixed to the bottom end of the first support frame, a flattening mechanism installed at one end of the first support frame, a second traveling wheel rotatably connected to the bottom end of the first support frame, a push rod fixed to the outside of the first support frame, a storage box fixed to the top end of the first support frame, a sowing mechanism installed inside the storage box, and a grooving mechanism fixed to one end of the storage box;

[0007] The flattening mechanism includes a second support frame, a mounting frame, and a first connecting rod. The second support frame is fixed to one end of the first support frame, one end of the mounting frame is fixedly connected to the second support frame, and the first connecting rod is rotatably connected to the outside of the mounting frame.

[0008] The sowing mechanism includes a first sprocket, a chain, and a second sprocket. The first sprocket is fixed to the rotating shaft of the second traveling wheel. The chain is meshed with the first sprocket, and the second sprocket is meshed with the chain.

[0009] Preferably, a pressure cylinder is fixed to the outside of the first connecting rod, and a storage box is fixed inside the pressure cylinder. The second support frame is V-shaped, and several sets of fixing rods are fixed to the outside of the first connecting rod in a circular array.

[0010] Preferably, the storage box is provided in four sets, the storage boxes are arranged in an array, the storage boxes are circumferentially offset by 45° around the axis of the first connecting rod, and the storage box has a sealed receiving cavity inside, the sealed receiving cavity is filled with steel balls.

[0011] Preferably, a second connecting rod is rotatably connected inside the storage box, a seed-taking tray is fixed at one end of the second connecting rod, a seed-unloading box is fixed inside the storage box, a seed-unloading box is connected to the bottom end of the seed-planting tube, an eccentric wheel is fixed at one end of the second connecting rod, a third support frame is fixed outside the storage box, a pump body corrugated pipe is fixed at the top end of the third support frame, and an air guide pipe is fixed at the bottom end of the pump body corrugated pipe.

[0012] Preferably, the chain is sleeved outside the first sprocket and the chain is sleeved outside the second sprocket. The second sprocket and the second connecting rod are fixedly connected. Two sets of seed-collecting discs are provided, and the seed-collecting discs are symmetrically distributed about the central axis of the second connecting rod.

[0013] Preferably, the surface of the seed-taking tray has three sets of seed-taking grooves arranged in a circular array, and two sets of seed-unloading boxes are provided, which are symmetrically distributed about the central axis of the storage box.

[0014] Preferably, there are two sets of eccentric wheels, which are symmetrically distributed about the central axis of the second connecting rod. The eccentric wheels are fixed at a non-axial position of the second connecting rod, and the output end of the pump body bellows is connected to the input end of the air guide pipe.

[0015] Preferably, the grooving mechanism includes a grooving block, a support block, and a grooving wheel. The grooving block is fixed to one end of the first support frame, one end of the support block is fixedly connected to the grooving block, and the grooving wheel is rotatably connected to the outside of the support block.

[0016] Preferably, there are two sets of grooving blocks, the inside of the support block is fixedly connected to the seeding pipe, the inside of the support block is fixedly connected to the air guide pipe, and there are several sets of grooving wheels, which are symmetrically distributed.

[0017] The present invention also provides a no-till reseeding method for degraded grassland, comprising the following steps:

[0018] S1. Add the seeds into the two sets of placement slots inside the storage box. Push the device forward by the push rod, so that the pressing cylinder rotates when it contacts the ground. The pressing cylinder flattens the harvested crops and land. During the movement of the device, the continuous rotation of the pressing cylinder causes the storage box to rotate inside the pressing cylinder. The steel balls inside the storage box are constantly raised and lowered, generating vibration, thereby improving the flattening effect of the pressing cylinder through vibration.

[0019] S2. During the user's push, the slotted block is inserted into the soil and forms a planting trough through the rotating slotted wheel. The support block can fix the sowing tube and the air guide tube. At the same time, the rotating second travel wheel drives the first sprocket to rotate. After the first sprocket drives the chain to move, the chain drives the second sprocket and the second connecting rod to rotate. When the second connecting rod rotates, it drives the two sets of seed picking discs to rotate. The rotating seed picking discs transport the seeds inside the storage box to the seed picking trough through the seed picking trough. After the seed picking trough rotates into the seed unloading box, the seeds fall and are sown in the opened planting trough through the seed unloading box and the sowing tube.

[0020] S3. The rotation of the second connecting rod synchronously drives the eccentric wheel to rotate. When the eccentric wheel rotates, it can continuously squeeze and separate from the pump body bellows, so that the pump body bellows can deliver air when it contracts, and reset through the restoring force, so that the pump body bellows can deliver air through the air guide pipe when it is squeezed by the eccentric wheel, so that the gas blows the falling seeds.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] This invention, through the coordinated arrangement of a first sprocket, chain, and second sprocket, enables the device to achieve purely mechanical synchronous linkage between its movement and seeding operations. This ensures the uniformity of seeding rate and the matching of movement speed in no-till reseeding. The first sprocket is fixed to the rotating shaft of the traveling wheel and rotates synchronously with the device's movement. The chain meshing drives the second sprocket to rotate synchronously, directly transmitting the driving power to the seeding mechanism. This eliminates the need for an additional independent drive unit, simplifying the device structure. The constant chain drive ratio ensures precise matching between seeding speed and movement speed, preventing missed seeding and double seeding. Ultimately, this invention improves seeding synchronization and seeding rate control accuracy, simplifies the device structure, and ensures the quality of no-till reseeding operations.

[0023] This invention, through the coordinated use of structures such as grooving blocks, support blocks, and grooving wheels, enables the device to continuously open standardized planting troughs under no-till conditions, providing a stable space for seed implantation and ensuring the germination rate of reseeded seeds. The grooving blocks provide a stable installation benchmark for the grooving structure, and their front end structure can break through the crust and dead grass layer on the surface of degraded grassland, reducing operational resistance. The support blocks simultaneously fix the seeding pipe and the air duct, realizing coaxial and continuous operation of grooving, sowing, and airflow-assisted seed placement. The grooving wheels rotate synchronously with the movement of the device, regularizing the soil layer to form planting troughs of uniform size. Ultimately, this achieves the effects of reducing the resistance of no-till operations, ensuring the quality of planting trough formation, and realizing the continuous and synchronous grooving and sowing process.

[0024] This invention, through the coordinated arrangement of a second support frame, a mounting frame, and a first connecting rod, enables the device to perform pre-leveling operations on complex surfaces of degraded grasslands. This provides a level working surface for subsequent trenching and sowing processes, ensuring consistency in reseeding operations. The V-shaped second support frame, fixed to the front end of the device frame, provides stable support for the leveling structure and can initially sort and gather straw residues and protruding clods along the travel path. The mounting frame and the first connecting rod form a rotating support structure, ensuring that the pressure cylinder rotates with the shape of the ground, achieving continuous rolling leveling. At the same time, it adapts to the undulations of the ground, avoiding excessive disturbance to the original soil structure. Ultimately, this achieves the effects of improving the leveling effect of complex surfaces, ensuring the consistency of the working surface for subsequent operations, and adapting to the requirements of no-till reseeding ecological operations. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the overall bottom view of the present invention;

[0027] Figure 3 This is a schematic diagram of the flattening mechanism of the present invention;

[0028] Figure 4 This is a schematic diagram of the storage box structure of the present invention;

[0029] Figure 5 This is a schematic diagram of the seeding mechanism of the present invention;

[0030] Figure 6 This is a schematic diagram of a portion of the seeding mechanism of the present invention;

[0031] Figure 7 This is an enlarged structural diagram of the seeding mechanism of the present invention;

[0032] Figure 8 This is a schematic diagram of the grooving mechanism of the present invention.

[0033] In the diagram: 1. First support frame; 2. First travel wheel; 3. Flattening mechanism; 301. Second support frame; 302. Mounting frame; 303. First connecting rod; 304. Pressing cylinder; 305. Storage box; 4. Second travel wheel; 5. Push rod; 6. Collection box; 7. Sowing mechanism; 701. First sprocket; 702. Chain; 703. Second sprocket; 704. Second connecting rod; 705. Seed tray; 706. Seed unloading box; 707. Sowing tube; 708. Eccentric wheel; 709. Third support frame; 710. Pump body corrugated pipe; 711. Air guide pipe; 8. Grooving mechanism; 801. Grooving block; 802. Support block; 803. Grooving wheel. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] like Figures 1 to 8 As shown, the present invention provides a no-till reseeding device for degraded grassland, including a first support frame 1, a first traveling wheel 2 fixed at the bottom end of the first support frame 1, a flattening mechanism 3 installed at one end of the first support frame 1, a second traveling wheel 4 rotatably connected to the bottom end of the first support frame 1, a push rod 5 fixed to the outside of the first support frame 1, a storage box 6 fixed to the top end of the first support frame 1, a sowing mechanism 7 installed inside the storage box 6, and a grooving mechanism 8 fixed at one end of the storage box 6.

[0036] like Figures 1 to 4 As shown, the flattening mechanism 3 includes a second support frame 301, a mounting frame 302, and a first connecting rod 303. The second support frame 301 is fixed to one end of the first support frame 1. One end of the mounting frame 302 is fixedly connected to the second support frame 301. The first connecting rod 303 is rotatably connected to the outside of the mounting frame 302. A pressure cylinder 304 is fixed to the outside of the first connecting rod 303. A storage box 305 is fixed inside the pressure cylinder 304. The second support frame 301 is V-shaped. Several sets of fixing rods are fixed to the outside of the first connecting rod 303. The fixing rods are arranged in a circular array. Four sets of storage boxes 305 are arranged in an array. The storage boxes 305 are offset by 45° around the axis of the first connecting rod 303. A sealed receiving cavity is opened inside the storage box 305. The sealed receiving cavity is filled with steel balls.

[0037] The above solution is adopted: the pressure cylinder 304 rotates when it comes into contact with the ground, thereby flattening the harvested crops and land. During the movement of the device, the continuous rotation of the pressure cylinder 304 drives the storage box 305 to rotate inside the pressure cylinder 304. The steel balls inside the storage box 305 are constantly raised and lowered, generating vibration, thereby improving the flattening effect of the pressure cylinder 304 through vibration.

[0038] like Figures 1 to 8As shown, the sowing mechanism 7 includes a first sprocket 701, a chain 702, and a second sprocket 703. The first sprocket 701 is fixed to the rotating shaft of the second traveling wheel 4. The chain 702 is meshed with the first sprocket 701, and the second sprocket 703 is meshed with the chain 702. A second connecting rod 704 is rotatably connected inside the storage box 6. A seed-collecting disc 705 is fixed to one end of the second connecting rod 704. A seed-discharging box 706 is fixed inside the storage box 6. The bottom end of the seed-discharging box 706 is connected to a sowing tube 707. An eccentric wheel 708 is fixed to one end of the second connecting rod 704. A third support frame 709 is fixed to the outside of the storage box 6. A pump body bellows 710 is fixed to the top of the third support frame 709, and an air guide pipe 711 is fixed to the bottom end of the pump body bellows 710. Chain 702 is sleeved on the outside of the first sprocket 701 and the outside of the second sprocket 703. The second sprocket 703 and the second connecting rod 704 are fixedly connected. Two sets of seed-collecting discs 705 are provided, and the seed-collecting discs 705 are symmetrically distributed about the central axis of the second connecting rod 704. Three sets of seed-collecting grooves are opened on the surface of the seed-collecting discs 705, and the seed-collecting grooves are distributed in a ring array. Two sets of seed-unloading boxes 706 are provided, and the seed-unloading boxes 706 are symmetrically distributed about the central axis of the storage box 6. Two sets of eccentric wheels 708 are provided, and the eccentric wheels 708 are symmetrically distributed about the central axis of the second connecting rod 704. The eccentric wheels 708 are fixed at the non-axial position of the second connecting rod 704. The output end of the pump body bellows 710 and the input end of the air guide pipe 711 are connected.

[0039] The above scheme is adopted: the rotating second travel wheel 4 drives the first sprocket 701 to rotate. After the first sprocket 701 drives the chain 702 to move, the chain 702 drives the second sprocket 703 and the second connecting rod 704 to rotate. When the second connecting rod 704 rotates, it drives the two sets of seed-collecting trays 705 to rotate. The seed-collecting trays 705 rotate and transport the seeds inside the collection box 6 into the seed-collecting slot through the seed-collecting slot. After the seed-collecting slot rotates into the seed-unloading box 706, the seeds fall and are discharged through the seed-unloading box 706. The seeding tube 707 sows the seeds in the planting trough, thus completing the continuous sowing of seeds. The rotation of the second connecting rod 704 synchronously drives the eccentric wheel 708 to rotate. When the eccentric wheel 708 rotates, it can continuously squeeze and disengage from the pump body bellows 710, so that the pump body bellows 710 can deliver air when it contracts, and can be reset by restoring force. When the pump body bellows 710 is squeezed by the eccentric wheel 708, it can deliver air through the air guide tube 711, so that the gas blows the falling seeds.

[0040] like Figures 1 to 8As shown, the grooving mechanism 8 includes a grooving block 801, a support block 802, and grooving wheels 803. The grooving block 801 is fixed to one end of the first support frame 1. One end of the support block 802 is fixedly connected to the grooving block 801. The grooving wheel 803 is rotatably connected to the outside of the support block 802. There are two sets of grooving blocks 801. The inside of the support block 802 is fixedly connected to the seeding pipe 707 and the inside of the air guide pipe 711. There are several sets of grooving wheels 803, which are symmetrically distributed.

[0041] The above solution is adopted: during the user's pushing process, the grooving block 801 is inserted into the soil, and the grooving wheel 803 forms a planting trough.

[0042] The present invention also provides a no-till reseeding method for degraded grassland, comprising the following steps:

[0043] S1. Add seeds into the two sets of placement slots inside the storage box 6. Push the device forward by the push rod 5, so that the pressing cylinder 304 rotates when it contacts the ground. The pressing cylinder 304 flattens the harvested crops and land. During the movement of the device, the continuous rotation of the pressing cylinder 304 causes the storage box 305 to rotate inside the pressing cylinder 304. The steel balls inside the storage box 305 are constantly raised and lowered, generating vibration, thereby improving the flattening effect of the pressing cylinder 304 through vibration.

[0044] S2. During the user's push, the grooving block 801 is inserted into the soil and forms a planting trough through the rotating grooving wheel 803. The support block 802 can fix the sowing tube 707 and the air guide tube 711. At the same time, the rotating second travel wheel 4 drives the first sprocket 701 to rotate. After the first sprocket 701 drives the chain 702 to move, the chain 702 drives the second sprocket 703 and the second connecting rod 704 to rotate. When the second connecting rod 704 rotates, it drives the two sets of seed trays 705 to rotate. The seed trays 705 rotate and transport the seeds inside the storage box 6 into the seed tray through the seed tray. After the seed tray rotates into the seed unloading box 706, the seeds fall down and are sown in the planting trough through the seed unloading box 706 and the sowing tube 707.

[0045] S3. The rotation of the second connecting rod 704 synchronously drives the eccentric wheel 708 to rotate as well. When the eccentric wheel 708 rotates, it can continuously squeeze and disengage from the pump body bellows 710, so that the pump body bellows 710 can deliver air when it contracts, and can be reset by restoring force. When the pump body bellows 710 is squeezed by the eccentric wheel 708, it can deliver air through the air guide pipe 711, so that the gas blows the falling seeds.

[0046] The working principle and usage process of this invention: During the no-till reseeding operation, the push rod 5 pushes the device forward along the operation path. During the movement of the device, the pressing cylinder 304 of the flattening mechanism 3 rotates synchronously with the ground surface. During the rotation of the pressing cylinder 304, the fixed rod on its outer wall initially presses down the straw residue and protruding soil clods on the ground surface, while simultaneously driving the storage box 305 to rotate synchronously. The steel balls inside the storage box 305 continuously rise and fall with the rotation, generating vibrations that are transmitted to the pressing cylinder 304, thus impacting the ground surface. Vibration leveling is performed. The second support frame 301 and the mounting frame 302 provide stable support for the pressure cylinder 304, ensuring the continuous execution of the leveling operation. During the movement of the device, the front end of the grooving block 801 of the grooving mechanism 8 is inserted into the ground surface to break through the surface crust and dead grass layer of the degraded grassland. The grooving wheel 803 rotates synchronously with the movement of the device to continuously open planting grooves of uniform size on the leveled ground surface. The support block 802 provides synchronous installation and positioning for the grooving wheel 803, the seeding pipe 707, and the air guide pipe 711.

[0047] During the movement of the device, the second traveling wheel 4 rotates synchronously with the rolling of the ground, driving the first sprocket 701 on its rotating shaft to rotate synchronously. Through the meshing transmission of the chain 702, the second sprocket 703 rotates. The second sprocket 703 drives the second connecting rod 704 to rotate synchronously with the seed-collecting tray 705. As the seed-collecting tray 705 rotates, it quantitatively carries out the seeds from the collection box 6 through the seed-collecting groove on its surface. When the seed-collecting groove rotates to align with the seed-discharging box 706, the seeds fall into the seed-discharging box 706 and then fall through the sowing tube 707 to the opened seed collection box. Inside the planting trough, the seeding operation is completed. As the second connecting rod 704 rotates, it drives the eccentric wheel 708 to rotate synchronously. During the rotation of the eccentric wheel 708, it periodically squeezes and disengages from the pump body bellows 710 at the top of the third support frame 709. When the pump body bellows 710 is squeezed, it discharges internal gas, which is transported to the outlet of the seeding pipe 707 through the air guide pipe 711. This blows the falling seeds, causing them to fall stably to the bottom of the planting trough. After the pump body bellows 710 is freed from the squeeze, it returns to its original position by its own restoring force, completing the air intake and preparing for the next airflow delivery.

[0048] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0049] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A no-till reseeding device for degraded grassland, comprising a first support frame (1), characterized in that: The bottom end of the first support frame (1) is fixed with a first travel wheel (2), one end of the first support frame (1) is equipped with a flattening mechanism (3), the bottom end of the first support frame (1) is rotatably connected with a second travel wheel (4), the outside of the first support frame (1) is fixed with a push rod (5), the top end of the first support frame (1) is fixed with a storage box (6), the inside of the storage box (6) is equipped with a sowing mechanism (7), and one end of the storage box (6) is fixed with a grooving mechanism (8). The flattening mechanism (3) includes a second support frame (301), a mounting frame (302) and a first connecting rod (303). The second support frame (301) is fixed to one end of the first support frame (1). One end of the mounting frame (302) is fixedly connected to the second support frame (301). The first connecting rod (303) is rotatably connected to the outside of the mounting frame (302). The sowing mechanism (7) includes a first sprocket (701), a chain (702), and a second sprocket (703). The first sprocket (701) is fixed to the rotating shaft of the second traveling wheel (4). The chain (702) is meshed with the first sprocket (701), and the second sprocket (703) is meshed with the chain (702).

2. The no-till reseeding device for degraded grassland according to claim 1, characterized in that: A pressure cylinder (304) is fixed to the outside of the first connecting rod (303), and a storage box (305) is fixed inside the pressure cylinder (304). The second support frame (301) is "V" shaped, and several sets of fixing rods are fixed to the outside of the first connecting rod (303), and the fixing rods are distributed in a ring array.

3. The no-till reseeding device for degraded grassland according to claim 2, characterized in that: The storage box (305) is provided in four sets, and the storage box (305) is arranged in an array. The storage box (305) is circumferentially offset by 45° around the axis of the first connecting rod (303). The storage box (305) has a sealed cavity inside, and the sealed cavity is filled with steel balls.

4. The no-till reseeding device for degraded grassland according to claim 1, characterized in that: The storage box (6) is rotatably connected to a second connecting rod (704). One end of the second connecting rod (704) is fixed with a seed-taking tray (705). The storage box (6) is fixed with a seed-unloading box (706). The bottom end of the seed-unloading box (706) is connected to a sowing tube (707). One end of the second connecting rod (704) is fixed with an eccentric wheel (708). The storage box (6) is fixed with a third support frame (709). The top end of the third support frame (709) is fixed with a pump body corrugated pipe (710). The bottom end of the pump body corrugated pipe (710) is fixed with an air guide pipe (711).

5. The no-till reseeding device for degraded grassland according to claim 4, characterized in that: The chain (702) is sleeved on the outside of the first sprocket (701), and the chain (702) is sleeved on the outside of the second sprocket (703). The second sprocket (703) is fixedly connected to the second connecting rod (704). Two sets of seed-collecting discs (705) are provided, and the seed-collecting discs (705) are symmetrically distributed about the central axis of the second connecting rod (704).

6. The no-till reseeding device for degraded grassland according to claim 4, characterized in that: The seed tray (705) has three sets of seed-taking slots on its surface, which are arranged in a ring array. The seed unloading box (706) has two sets, which are symmetrically distributed about the central axis of the storage box (6).

7. The no-till reseeding device for degraded grassland according to claim 4, characterized in that: Two sets of eccentric wheels (708) are provided. The eccentric wheels (708) are symmetrically distributed about the central axis of the second connecting rod (704). The eccentric wheels (708) are fixed at the non-axial position of the second connecting rod (704). The output end of the pump body bellows (710) and the input end of the air guide pipe (711) are connected.

8. The no-till reseeding device for degraded grassland according to claim 1, characterized in that: The grooving mechanism (8) includes a grooving block (801), a support block (802), and a grooving wheel (803). The grooving block (801) is fixed at one end of the first support frame (1), and one end of the support block (802) is fixedly connected to the grooving block (801). The grooving wheel (803) is rotatably connected to the outside of the support block (802).

9. The no-till reseeding device for degraded grassland according to claim 8, characterized in that: Two sets of the grooving blocks (801) are provided. The interior of the support block (802) is fixedly connected to the seeding pipe (707). The interior of the support block (802) is fixedly connected to the air guide pipe (711). Several sets of the grooving wheels (803) are provided. The grooving wheels (803) are symmetrically distributed.

10. A method for no-till reseeding degraded grassland, employing a no-till reseeding device for degraded grassland as described in any one of claims 1-9, characterized in that: Includes the following steps: S1. Add seeds into the two sets of placement slots inside the storage box (6), and push the device forward by the push rod (5) so that the pressing cylinder (304) rotates when it contacts the ground. Then, the pressing cylinder (304) flattens the harvested crops and land. During the movement of the device, the continuous rotation of the pressing cylinder (304) causes the storage box (305) to rotate inside the pressing cylinder (304). The steel balls inside the storage box (305) are constantly raised and lowered to generate vibration, thereby improving the flattening effect of the pressing cylinder (304) through vibration. S2. During the user's push, the slotted block (801) is inserted into the soil and forms a planting trough through the rotating slotted wheel (803). The support block (802) can fix the sowing tube (707) and the air guide tube (711). At the same time, the rotating second travel wheel (4) drives the first sprocket (701) to rotate. After the first sprocket (701) drives the chain (702) to move, the chain (702) drives the second sprocket (703) and the second connecting rod (704) to rotate. When the second connecting rod (704) rotates, it drives the two sets of seed trays (705) to rotate. The seed trays (705) rotate and transport the seeds inside the storage box (6) to the seed tray through the seed tray. After the seed tray rotates into the seed unloading box (706), the seeds fall down and are sown in the planting trough through the seed unloading box (706) and the sowing tube (707). S3. The rotation of the second connecting rod (704) synchronously drives the eccentric wheel (708) to rotate. When the eccentric wheel (708) rotates, it can continuously squeeze and separate from the pump body bellows (710), so that the pump body bellows (710) can deliver gas when it contracts, and reset through the restoring force, so that the pump body bellows (710) can deliver gas through the air guide pipe (711) when it is squeezed by the eccentric wheel (708), so that the gas blows the falling seeds.

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