Fertilizing device for restoring degraded grassland

Abstract

The invention relates to the technical field of fertilizing devices, in particular to a fertilizing device for restoring degraded grassland. Comprising a supporting frame, an advancing device and a collecting hopper arranged on the supporting frame, a scarifier is arranged at the bottom of the collecting hopper, a feeding box communicated with the collecting hopper is arranged on the scarifier, a pressing block is arranged on the inner side of the scarifier, and pressing mechanisms used for pressing the pressing block are elastically connected to the positions, located on the two sides of the collecting hopper, above the pressing block. A return spring elastic connection mode is adopted between a lantern ring and the bottom end of a pressure applying rod, and when the pressure applying block at a feeding point is blocked from moving downwards, fertilizer is fed at the blocked position, so that the fertilizer can be smoothly fed at each feeding point, the phenomenon of omission is prevented, meanwhile, the fertilizer is fed into a compacted pit by utilizing a feeder, and the fertilizer feeding efficiency is improved. The soil at the bottom of the pit becomes firm, the fertilizer is stored, direct downward permeation of the fertilizer can be reduced, the fertilizer is made to seep outwards from the periphery of the bottom of the pit, and the coverage range of the fertilizer is widened.

Description

Technical Field

[0001] The present invention relates to the technical field of fertilizing devices, in particular to a fertilizing device for restoring degraded grasslands. Background Art

[0002] Grassland is a complex ecosystem composed of factors such as meteorology, soil, plants, animals, and microorganisms. The direction of the system's succession mainly depends on the changes in various factors and the interactions between factors. However, due to the arbitrary reclamation of grassland by humans and the excessive consumption of grassland resources, the ecological function of grassland has been greatly weakened, the ecological environment has been deteriorating, and grassland has been degraded. In recent years, people have gradually realized the harm caused by grassland degradation and are also committed to restoring grassland.

[0003] There are many existing technologies for fertilizing devices, such as:

[0004] Chinese patent publication number CN117084011B discloses an agricultural wheat planting and fertilizing device, which relates to the technical field of agricultural fertilizing machinery, including a tillage machine, a tiller fixedly installed on the lower side of the tillage machine, and a mounting plate fixedly connected to the right end face of the tillage machine; the present invention adopts a pressure mechanism to smash the loosened soil into a pit, and the arc rod drives the pressure block downward under the pressure of the left eccentric wheel, so that when the pressure block smashes the soil to the ground and forms a pit, the soil is subjected to a huge extrusion force. The squeezing of the soil by the pressure block and the arrangement effect of the soil particles increase the density and hardness of the soil inside the pit, thereby well preserving the fertilizer inside the pit and preventing the fertilizer from flowing into the deep through the gap and causing soil loss.

[0005] The existing fertilization method is mainly to spread the fertilizer on the ground manually or by machine. The spread fertilizer will not only fall on the ground, but also fall on the leaves and core of the vegetation, which can easily cause seedling burns and affect the recovery speed of the grassland. If the tillage method is adopted, the left eccentric wheel is used to apply pressure to the arc rod, so that the arc rod pushes the pressure block to compact a pit in the soil, and then the baffle is triggered during the upward movement of the pressure block, so that the fertilizer above the baffle passes through the pressure block and falls into the pit, so that the fertilizer can be stored. However, when there are hard stones in the soil, the downward movement of the pressure block will affect its normal reciprocating movement due to resistance, and the baffle above the obstructed point will be unable to open, resulting in omissions in fertilizer delivery, affecting uniform delivery. Summary of the Invention

[0006] The purpose of the present invention is to provide a fertilizing device for restoring degraded grassland to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the present invention aims to provide a fertilizing device for restoring degraded grassland, including a support frame, a traveling device and a collecting hopper arranged on the support frame, the collecting hopper having a loosener at the bottom, the loosener being provided with the feeding box connected with the collecting hopper, a pressure block being provided on the inner side of the loosener, and a pressure mechanism for applying pressure to the pressure block being elastically connected above the pressure block and on both sides of the collecting hopper, when the pressure mechanism moves downward, the pressure mechanism compacts the pressure block in the gully to form a pit for accommodating fertilizer by applying pressure, and when the pressure mechanism resets upward, the pressure mechanism releases the fertilizer in the collecting hopper, and the fertilizer uses gravity to hit the feeding mechanism arranged inside the pressure block, and the feeding mechanism is used to control its feeding speed according to the weight of the fertilizer, and guide the fertilizer in the pressure block into the pit to achieve the preservation of the fertilizer.

[0008] A feeder for introducing fertilizer into a feeding box is rotatably provided in the collecting hopper. The feeder has a feeding trough for accommodating fertilizer. The feeder is used to release the fertilizer in the feeding trough when the feeding trough rotates to overlap with the bottom opening of the collecting hopper.

[0009] As a further improvement of the present technical solution, the pressure mechanism includes a cam fixedly connected to the feeder, and a pressure rod fitted with the outer edge of the cam. The cam is connected to the travel device through a rotating shaft and applies thrust to the pressure rod to form a pit in the soil.

[0010] As a further improvement of the present technical solution, a stabilizing rod and a support plate are fixedly arranged between the pressure rods on both sides. The stabilizing rod is used to maintain the stability of the pressure rod. A compression spring is elastically connected between the support plate and the loosener. The compression spring is used to keep the top end of the pressure rod tightly fitted with the outer edge of the cam, so that the pressure rod can move up and down.

[0011] As a further improvement of this technical solution, a ring is provided at the bottom end of the pressure rod, and the ring is sleeved on the connecting shaft on the side of the pressure block. The connecting shaft is fixed on the pressure block, and the connecting shaft is rotatably connected to the ring. A reset spring is elastically connected between the ring and the pressure rod.

[0012] As a further improvement of the present technical solution, a feed opening for fertilizer to flow through is provided on the pressure block on the side opposite to the direction of travel, and the feed opening is away from the bottom of the pressure block to limit the entry of soil into the pressure block. The top of the pressure block has an opening, and a through groove is provided on the loosening device at a position corresponding to the opening, and the size of the through groove is smaller than the size of the opening.

[0013] As a further improvement of the present technical solution, a through groove is provided on the side wall of the tiller which is slidably connected to the connecting shaft, and a number of silicone strips are provided on the inner wall of the through groove close to the discharge port at equal intervals from bottom to top. The silicone strips are used to form friction with the connecting shaft when the connecting shaft moves upward, so that the connecting shaft rotates in a clockwise direction, and the fertilizer is dumped by tilting the pressure block.

[0014] As a further improvement of the present technical solution, an arc-shaped groove is provided at the end of the connecting shaft, and a limit block is slidably connected in the arc-shaped groove for limiting the counterclockwise rotation of the connecting shaft. The limit block is fixedly connected to the inner wall of the collar. Under normal circumstances, the limit block abuts against the inner wall of the arc-shaped groove.

[0015] As a further improvement of the present technical solution, the feeding mechanism includes a feeding plate that is arranged inside the pressure block in a rotatable manner, and the end of the feeding plate is placed on a mud blocking plate. The mud blocking plate is used to control the opening and closing of the discharge port, provide support for one end of the feeding plate, and the mud blocking plate can also limit the entry of external soil. The mud blocking plate is slidably connected to the inner wall of the pressure block.

[0016] As a further improvement of the present technical solution, a connecting spring is elastically connected between the bottom of the mud stop and the inner wall of the pressure block.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. In the fertilizing device for restoring degraded grassland, a reset spring elastic connection is adopted between the collar and the bottom end of the pressure rod. When the downward movement of the pressure block at the delivery point is blocked, fertilizer is delivered at the blocked position, thereby ensuring that fertilizer can be delivered smoothly at each delivery point to prevent omissions. At the same time, the feeder is used to deliver fertilizer into the compacted pit, so that the soil at the bottom of the pit becomes firm and the fertilizer is preserved. This can reduce the direct downward penetration of fertilizer and make the fertilizer seep out from around the bottom of the pit, thereby increasing the coverage of the fertilizer.

[0019] 2. In the fertilizing device for restoring degraded grassland, the silicone strip is used to increase the friction between the connecting shaft and the silicone strip during the upward movement. Moreover, each time the connecting shaft is separated from the silicone strip, it rotates in the opposite direction under the action of gravity, and the silicone strip successively forms friction with the connecting shaft, causing the pressure block to rotate clockwise to pour out the fertilizer. At the same time, the pressure block breaks up the fertilizer inside it by shaking, thereby preventing the fertilizer from accumulating at the discharge port and causing blockage, which affects the discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a front view of the connection structure between the collecting hopper and the ripper of the present invention;

[0022] Figure 3 This is a schematic diagram of the internal structure of the collecting hopper of the present invention;

[0023] Figure 4 For the present invention Figure 2 A in the figure shows the enlarged structural diagram;

[0024] Figure 5 This is a schematic diagram of the explosion structure of the cam and the pressure rod of the present invention;

[0025] Figure 6 It is a front view of the cam and feeder structure of the present invention;

[0026] Figure 7 This is a schematic diagram of the internal structure of the soil scarifier of the present invention;

[0027] Figure 8 This is a schematic diagram of the internal structure of the soil scarifier and pressure block of the present invention;

[0028] Figure 9 It is a schematic diagram of the opening principle of the feed opening of the present invention.

[0029] The meaning of each number in the figure is:

[0030] 100. Support frame; 101. Traveling device; 102. Collecting hopper; 103. Ripper; 104. Through slot; 105. Silica gel strip; 106. Feed box;

[0031] 110. Pressure mechanism; 111. Cam; 112. Pressure rod; 113. Stabilizing rod; 114. Return spring; 115. Support plate; 116. Compression spring;

[0032] 120, pressure block; 121, feed port; 122, connecting shaft; 123, arc groove;

[0033] 130. Feeder; 131. Feeding trough;

[0034] 140. Feeding mechanism; 141. Feeding plate; 142. Mud stop plate; 143. Connecting spring;

[0035] 150. Ring; 151. Limit block. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0037] like Figure 1-Figure 2 As shown, a fertilizing device for restoring degraded grassland is provided, comprising a support frame 100, a traveling device 101, and a collecting hopper 102 arranged on the support frame 100. The collecting hopper 102 has a tiller 103 at the bottom, and the tiller 103 is provided with a feeding box 106 connected to the collecting hopper 102. When fertilizing, the fertilizing device is placed on the fertilized grassland and is driven to move by a traction device. During the movement of the fertilizing device, the tiller 103 loosens the soil surface to form gullies on the soil.

[0038] exist Figure 2 Based on and combined with Figure 7 and Figure 8 As shown, a pressure block 120 is provided on the inner side of the tiller 103, and a pressure mechanism 110 for applying pressure to the pressure block 120 is elastically connected above the pressure block 120 and on both sides of the collecting hopper 102. When the pressure mechanism 110 moves downward, the pressure mechanism 110 compacts the pressure block 120 in the gully to form a pit for accommodating fertilizer, so as to store the fertilizer later. On the contrary, when the pressure mechanism 110 is reset upward, the pressure mechanism 110 releases the fertilizer in the collecting hopper 102, and the fertilizer uses gravity to hit the feeding mechanism 140 provided inside the pressure block 120. The feeding mechanism 140 is used to control its feeding speed according to the weight of the fertilizer, and guide the fertilizer in the pressure block 120 into the pit to achieve the preservation of the fertilizer.

[0039] First, before fertilizing, the fertilizer is poured into the collecting hopper 102. In order to prevent the fertilizer poured into the collecting hopper 102 from directly escaping from the tiller 103 and forming a pile, for this purpose, as shown in FIG. Figure 3 As shown, a feeder 130 for introducing fertilizer into the feeding box 106 is rotatably provided in the collecting hopper 102, and the feeder 130 has a feeding trough 131 for accommodating fertilizer. The feeder 130 is used to release the fertilizer in the feeding trough 131 when the feeding trough 131 rotates to coincide with the opening at the bottom of the collecting hopper 102. When the fertilizer is just added to the collecting hopper 102, the feeder 130 can intercept the upper fertilizer to limit the falling of the fertilizer, and introduce the fertilizer into the feeding box 106 in an intermittent manner during the movement of the traveling device 101, so that the fertilizer falls evenly into the pit compacted by the pressure block 120.

[0040] Secondly, since the power of the pressure block 120 comes from the pressure mechanism 110, based on the above diagram, combined with Figure 5As shown, the specific structure of the pressure mechanism 110 is further disclosed. The pressure mechanism 110 includes a cam 111 fixedly connected to the feeder 130, and a pressure rod 112 affixed to the outer edge of the cam 111. The cam 111 is connected to the traveling device 101 through a rotating shaft and applies a thrust to the pressure rod 112 to form a pit in the soil for accommodating fertilizer.

[0041] In addition, the convex top of the cam 111 is arranged opposite to the feeding trough 131. For details, please refer to Figure 6 As shown, the convex top and the feeding trough 131 are arranged relative to each other with L1 as the symmetry line. The purpose of this is that when the convex top of the cam 111 presses downward on the pressure rod 112, the pressure block 120 will first compact a pit on the soil, and then the feeding trough 131 continues to rotate to release the fertilizer and drop it into the pit, and the two have an existing order.

[0042] A stabilizing rod 113 and a support plate 115 are fixedly arranged between the pressure rods 112 on both sides. The stabilizing rod 113 is used to maintain the stability of the pressure rod 112. A compression spring 116 is elastically connected between the support plate 115 and the ripper 103. The compression spring 116 is used to keep the top of the pressure rod 112 in close contact with the outer edge of the cam 111, so that the pressure rod 112 can reciprocate up and down. On the other hand, a collar 150 is provided at the bottom end of the pressure rod 112. The collar 150 is sleeved on the connecting shaft 122 on the side of the pressure block 120. The connecting shaft 122 is fixedly arranged on the pressure block 120, and the connecting shaft 122 is rotatably connected to the collar 150. A return spring 114 is elastically connected between the collar 150 and the pressure rod 112.

[0043] In this way, when the tiller 103 passes through the soil, the traveling device 101 drives the cam 111 and the feeder 130 to rotate synchronously through the rotating shaft. At first, the top of the pressure rod 112 contacts the convex root of the cam 111. As the cam 111 rotates counterclockwise, the top of the pressure rod 112 slides from the convex root to contact with the convex top. During this process, the pressure rod 112 moves downward to apply pressure to the return spring 114. The return spring 114 transmits the pressure to the connecting shaft 122, causing the pressure block 120 to move downward and form a pit on the loose soil. At this time, the cam 111 continues to rotate, and the top of the pressure rod 112 slides from the convex top to contact with the convex root. This process is the process of retracting the pressure block 120 and applying fertilizer.

[0044] In the fertilization process, when the pressure block 120 is released from the pit, the feeding trough 131 guides the fertilizer in the collecting hopper 102 into the feeding box 106 through the conduit, and then the fertilizer passes through the pressure block 120 and slides into the pit, thereby realizing automatic quantitative feeding of the fertilizer;

[0045] Secondly, the above-mentioned pit formation is for loose soil. On the contrary, when there are stones in the gully, if the bottom end of the pressure rod 112 is in rigid contact with the ring 150, it is easy to cause damage to the equipment. For this reason, a reset spring 114 is elastically connected between the ring 150 and the bottom end of the pressure rod 112. When the pressure block 120 at the delivery point is blocked from moving downward, the feeder 130 delivers fertilizer at the blocked position, thereby ensuring that each delivery point can smoothly deliver fertilizer to prevent omissions. Secondly, the pressure block 120 is used to compact the pit, making the soil at the bottom of the pit firm and preserving the fertilizer. This can reduce the direct downward penetration of the fertilizer and make the fertilizer seep out from the bottom of the pit to increase the coverage of the fertilizer.

[0046] Taking into account the process of the fertilizer in the feed box 106 falling into the pressure block 120, it is necessary to ensure that the fertilizer enters the pressure block 120 smoothly. Therefore, a discharge port 121 for the fertilizer to flow through is opened on the pressure block 120 on the side opposite to the traveling direction. The discharge port 121 is away from the bottom of the pressure block 120, so that the soil can be restricted from entering the pressure block 120 during the compaction of the pit, affecting the discharge of the fertilizer. The top of the pressure block 120 has an opening, and a through groove is opened on the loosening device 103 at the corresponding position of the opening. In this way, when the fertilizer in the hopper 102 passes through the feed box 106 and the opening and falls into the pressure block 120, the through groove size is smaller than the opening size. Therefore, when discharging, the fertilizer in the feed box 106 can fall smoothly into the pressure block 120, preventing the fertilizer from falling out and causing waste.

[0047] Secondly, combined Figure 8 and Figure 4 As shown, a square groove 104 is provided on the side wall of the ripper 103 to be slidably connected to the connecting shaft 122. A plurality of silicone strips 105 are provided on the inner wall of the square groove 104 near the discharge port 121 at equal intervals from bottom to top. The silicone strips 105 are used to form friction with the connecting shaft 122 when the connecting shaft 122 moves upward, so that the connecting shaft 122 rotates in a clockwise direction (refer to FIG. Figure 4 In the direction of the arrow in the figure), the fertilizer is poured by tilting the pressure block 120 (the rotation direction of the pressure block 120 is as shown in FIG. Figure 9 (indicated by the arrow in the middle).

[0048] That is to say, the silicone strip 105 is used to increase the friction between the connecting shaft 122 and the silicone strip 105 during the process of moving upward, and each time the connecting shaft 122 is separated from the silicone strip 105, it rotates in the opposite direction under the action of gravity, and the silicone strip 105 successively forms friction with the connecting shaft 122, so that the pressure block 120 rotates clockwise to pour out the fertilizer. At the same time, the pressure block 120 breaks up the fertilizer inside it by shaking, thereby preventing the fertilizer from accumulating at the discharge port 121 and causing blockage, which affects the discharge of the material.

[0049] In addition, in order to prevent the pressure block 120 from contacting the silicone strip 105 during the downward movement, causing the pressure block 120 to rotate counterclockwise, thereby affecting the shape of the pit, an arc groove 123 is provided at the end of the connecting shaft 122, and a limit block 151 is slidably connected in the arc groove 123 to limit the counterclockwise rotation of the connecting shaft 122. The limit block 151 is fixedly connected to the inner wall of the ring 150. Under normal circumstances, the limit block 151 is against the inner wall of the arc groove 123. When the pressure block 120 moves upward and resets, the connecting shaft 122 is separated from the silicone strip 105 and rotates in the opposite direction under the action of gravity. When the limit block 151 contacts the arc groove 123, a collision is formed, so that the fertilizer accumulation in the pressure block 120 is dredged by vibration, so that the fertilizer can be discharged from the discharge port 121 as soon as possible.

[0050] It is worth noting that the above-mentioned normal state refers to when the pressure block 120 has not yet moved downward, the limit block 151 and the arc groove 123 are against each other, and at this time the bottom of the pressure block 120 remains flush with the ground.

[0051] Furthermore, in order to make the fertilizer in the pressure block 120 escape as quickly as possible during the retraction process of the pressure block 120, we return to Figure 8 Combined with Figure 9 As shown, the specific structure of the feeding mechanism 140 is shown. The feeding mechanism 140 includes a feeding plate 141 that is rotatably arranged inside the pressure block 120 in an inclined manner. The end of the feeding plate 141 is placed on a mud blocking plate 142. The mud blocking plate 142 is used to control the opening and closing of the discharge port 121, provide support for one end of the feeding plate 141, and the mud blocking plate 142 can also limit the entry of external soil. The mud blocking plate 142 is slidingly connected to the inner wall of the pressure block 120, and a connecting spring 143 is elastically connected between the bottom of the mud blocking plate 142 and the inner wall of the pressure block 120. Under normal circumstances, the mud blocking plate 142 is used to block the discharge port 121 to limit the entry of external soil.

[0052] It should be noted that when the pressure block 120 is about to separate from the pit, the fertilizer in the feeding trough 131 is opened and the fertilizer falls into the pressure block 120. The purpose is to avoid the pressure block 120 being still in the pit, causing the fertilizer in the feeding trough 131 to be released prematurely, resulting in the fertilizer not falling accurately into the pressure block 120.

[0053] Working principle: Due to Figure 3The raw materials in the intermediate hopper 102 are released at one time. When the fertilizer passes through the feeding box 106 and falls into the pressure block 120, the discharge port 121 is initially restricted by the mud blocking plate 142. The fertilizer is easily blocked by the discharge port 121 when it is poured out at one time. If the discharge port 121 is initially restricted, the pressure block 120 will be rammed into the soil, which may cause the soil to pass through the discharge port 121 and enter the pressure block 120, affecting the normal discharge of the fertilizer. Therefore, when the fertilizer is discharged at one time, the gravity of the fertilizer is used to hit the feeding plate 141. The feeding plate 14 1 applies pressure to the mud stop plate 142 downward, so that the gravity of the fertilizer overcomes the elastic potential energy of the connecting spring 143 and moves downward. The mud stop plate 142 opens the discharge port 121, thereby controlling the opening and closing of the discharge port 121 according to the discharge amount of the fertilizer, so that the fertilizer on the feeding plate 141 can be smoothly discharged from the discharge port 121 to prevent blockage. At the same time, during the discharge process in the discharge port 121, the pressure block 120 rotates clockwise, which increases the inclination angle of the feeding plate 141, thereby accelerating the discharge of the fertilizer on the feeding plate 141.

[0054] When the fertilizer in the pressure block 120 completely slides into the pit, the mud blocking plate 142 resets upward, and the soil is covered on the pit through the paving device in the prior art to reduce the loss of fertilizer, wherein the paving device is arranged at the rear end of the tiller 103 and connected to the support frame 100, and then the pressure block 120 compacts the soil at the next delivery point again.

[0055] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A fertilizing device for restoring degraded grassland, comprising a support frame (100), a traveling device (101), and a collecting hopper (102) arranged on the support frame (100), wherein the collecting hopper (102) has a ripper (103) at the bottom, and the ripper (103) is provided with a feed box (106) connected to the collecting hopper (102), characterized in that: A pressure block (120) is provided inside the soil loosener (103), and a pressure mechanism (110) for applying pressure to the pressure block (120) is elastically connected above the pressure block (120) and located on both sides of the collecting hopper (102). When the pressure mechanism (110) moves downward, the pressure mechanism (110) compacts the pressure block (120) in the gully to form a pit for accommodating fertilizer by applying pressure. When the pressure mechanism (110) is reset upward, the pressure mechanism (110) releases the fertilizer in the collecting hopper (102), and the fertilizer is hit by gravity toward the feeding mechanism (140) provided inside the pressure block (120). The feeding mechanism (140) is used to control its feeding speed according to the weight of the fertilizer and guide the fertilizer in the pressure block (120) into the pit to achieve the preservation of the fertilizer.

2. The fertilizing device for degraded grassland restoration according to claim 1, characterized in that: A feeder (130) is rotatably provided in the collecting hopper (102) for introducing fertilizer into the feeding box (106). The feeder (130) has a feeding trough (131) for accommodating the fertilizer. The feeder (130) is used to release the fertilizer in the feeding trough (131) when the feeding trough (131) rotates to overlap with the bottom opening of the collecting hopper (102).

3. The fertilizing device for degraded grassland restoration according to claim 2, characterized in that: The pressure mechanism (110) includes a cam (111) fixedly connected to the feeder (130), and a pressure rod (112) abutting against the outer edge of the cam (111). The cam (111) is connected to the travel device (101) via a rotating shaft and applies a thrust to the pressure rod (112) to form a pit in the soil.

4. The fertilizing device for degraded grassland restoration according to claim 3, characterized in that: A stabilizing rod (113) and a supporting plate (115) are fixedly arranged between the pressure rods (112) on both sides. The stabilizing rod (113) is used to maintain the stability of the pressure rod (112). A compression spring (116) is elastically connected between the supporting plate (115) and the tiller (103). The compression spring (116) is used to keep the top end of the pressure rod (112) in close contact with the outer edge of the cam (111), so that the pressure rod (112) can reciprocate up and down.

5. The fertilizing device for degraded grassland restoration according to claim 4, characterized in that: A collar (150) is provided at the bottom end of the pressure rod (112), and the collar (150) is sleeved on the connecting shaft (122) on the side of the pressure block (120). The connecting shaft (122) is fixedly provided on the pressure block (120), and the connecting shaft (122) is rotatably connected to the collar (150). A return spring (114) is elastically connected between the collar (150) and the pressure rod (112).

6. The fertilizing device for degraded grassland restoration according to claim 5, characterized in that: A feed opening (121) for fertilizer to flow through is provided on the pressure block (120) on the side opposite to the direction of travel. The feed opening (121) is away from the bottom of the pressure block (120) to limit the entry of soil into the pressure block (120). The top of the pressure block (120) has an opening, and a through groove is provided on the loosening device (103) at a position corresponding to the opening. The size of the through groove is smaller than the size of the opening.

7. The fertilizing device for degraded grassland restoration according to claim 6, characterized in that: A square groove (104) is provided on the side wall of the tiller (103) and is slidably connected to the connecting shaft (122). A plurality of silicone strips (105) are provided on the inner wall of the square groove (104) near the discharge port (121) at equal intervals from bottom to top. The silicone strips (105) are used to form friction with the connecting shaft (122) when the connecting shaft (122) moves upward, so that the connecting shaft (122) rotates in a clockwise direction, so that the fertilizer is poured in a tilted manner through the pressure block (120).

8. The fertilizing device for degraded grassland restoration according to claim 7, characterized in that: An arcuate groove (123) is provided at the end of the connecting shaft (122), and a limit block (151) is slidably connected in the arcuate groove (123) for limiting the counterclockwise rotation of the connecting shaft (122). The limit block (151) is fixedly connected to the inner wall of the collar (150). Under normal conditions, the limit block (151) abuts against the inner wall of the arcuate groove (123).

9. The fertilizing device for degraded grassland restoration according to claim 6, characterized in that: The feeding mechanism (140) includes a feeding plate (141) that is rotatably arranged inside the pressure block (120) in an inclined manner. The end of the feeding plate (141) is placed on a mud blocking plate (142). The mud blocking plate (142) is used to control the opening and closing of the discharge port (121) and provide support for one end of the feeding plate (141). The mud blocking plate (142) can also limit the entry of external mud. The mud blocking plate (142) is slidably connected to the inner wall of the pressure block (120).

10. The fertilizing device for degraded grassland restoration according to claim 9, characterized in that: A connecting spring (143) is elastically connected between the bottom of the mud blocking plate (142) and the inner wall of the pressure block (120).

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