Root cutting device and restoration method for degraded leymus chinensis grassland

Abstract

The invention relates to the technical field of grassland ecological restoration, in particular to a root cutting device for a degraded leymus chinensis grassland and a restoration method. A suspension frame is arranged on a rack of the root cutting device, and the rack is constructed to walk on a sheep grass land along with movement of traction equipment. A punching assembly, a root cutting assembly and a fertilizing assembly are sequentially arranged on the rack in the walking direction. The punching assembly is configured to rotate along with walking of the rack and punch holes in the sheep grass land along the walking path of the rack, so that a plurality of punching belts are formed in the sheep grass land. The root cutting assembly is configured to rotationally cut in downwards from the surface of the leymus chinensis grassland through power transmission, loosen a soil hardening layer between the adjacent punching belts, cut off leymus chinensis roots in soil and construct a root cutting area between the punching belts along the walking path of the rack. The fertilizing assembly is used for fertilizing the root cutting area. According to the root cutting device for the degraded leymus chinensis grassland, the regeneration efficiency of leymus chinensis roots and the restoration quality of the grassland are improved.

Description

Technical Field

[0001] The invention relates to the technical field of grassland ecological restoration, and in particular to a root cutting device and a restoration method for degraded Leymus chinensis grassland. Background Art

[0002] As a perennial Leymus forage grass, Leymus chinensis has a strong root tillering ability and can form a strong root network. After growing for several years, the roots will degenerate, and over time, the soil physical and chemical properties of the grassland will deteriorate, and the soil will become compacted. The pores between soil particles are reduced, and it is difficult for air to enter the soil smoothly, which reduces the oxygen content in the soil and affects the respiration of the Leymus chinensis root system. Soil compaction leads to a decrease in water storage capacity, and it is difficult for rainwater or irrigation water to penetrate deep into the soil, which in turn causes damage to Leymus chinensis production. In severe cases, Leymus chinensis cannot absorb water and nutrients normally due to its roots, and it shrinks and turns yellow, which greatly affects the productivity and ecological function of the grassland.

[0003] Although mechanized soil breaking and root cutting is a method that has been found to be useful for restoring soil structure, aiming to achieve low disturbance, no turning over and local loosening, there are still many problems in its actual application. On the one hand, the performance of existing sheepgrass root cutting equipment varies, and some equipment has uneven cutting effects, and cannot accurately control the cutting depth and angle, making it difficult to ensure effective treatment of the sheepgrass root system. On the other hand, the equipment's power adaptability is insufficient. When faced with different soil hardness and the degree of development of the sheepgrass root system, it may lack power and be unable to operate normally.

[0004] As an important reserve source of livestock feed, long-term mowing has put the grassland ecosystem in trouble. Due to excessive forage output and the failure to replenish nutrient input, the nutrient input and output are unbalanced. This imbalance directly affects the species composition and community structure of the grassland. Some species that originally adapted to the ecological environment of Leymus chinensis grassland gradually decreased due to lack of nutrients, while some species that are resistant to barrenness or invasive may take the opportunity to reproduce in large numbers, thereby changing the original ecological balance of the grassland.

[0005] In summary, the existing Leymus chinensis grasslands are facing many serious problems such as root degradation, soil compaction, difficulty in mechanized restoration and ecological imbalance of mowed grasslands. Comprehensive consideration and effective measures are needed to solve them in order to achieve the sustainable utilization of Leymus chinensis grasslands and the healthy development of grassland animal husbandry. Summary of the invention

[0006] In view of the above technical problems, in a first aspect, the present invention proposes a root cutting device for degraded Leymus chinensis grassland, comprising a frame, on which a suspension frame for connecting a traction device is provided, and the frame is configured to move on the Leymus chinensis grassland with the movement of the traction device; The frame is also provided with a punching assembly, a root cutting assembly and a fertilizing assembly in sequence along the traveling direction; The punching assembly is installed at the bottom of the frame, and is configured to rotate in response to the movement of the frame, and punch holes on the Leymus chinensis grassland along the walking path of the frame, so that a plurality of punching belts are formed on the Leymus chinensis grassland; The root cutting assembly is arranged behind the punching assembly, and is configured to rotate downward from the surface of the Leymus chinensis grassland through power transmission, loosen the soil compaction layer between adjacent punching belts, cut off the Leymus chinensis root system in the soil, and construct a root cutting area between the punching belts along the walking path of the frame; The fertilization assembly is installed on the top of the frame and is used for fertilizing the root cutting area.

[0007] The perforating component can break the soil compaction layer and form ventilation channels in the soil compaction layer, so that air can enter the soil more smoothly, providing sufficient oxygen supply for the roots of sheep grass, which is beneficial to promote the growth and development of the root system. The perforating component also improves the pore structure of the soil and increases the proportion of large pores, so that rainwater or irrigation water can penetrate into the deep soil layer faster. In addition, the root system of the sheepgrass is cut to an appropriate length (for example, 3cm-8cm) between the perforated belts by the root cutting component, which is used to cut off the network root system of the sheepgrass to promote the tillering and expansion of the sheepgrass, and can stimulate the sheepgrass root system to sprout new roots again, increase the vitality of the root system and the ability to absorb nutrients. The fertilization component then fertilizes the root cutting area so that the fertilizer can be accurately applied near the sheepgrass root system, thereby improving the fertilizer utilization rate, better providing nutrient support for the growth of the sheepgrass, promoting the rapid growth of the sheepgrass and the ecological restoration of the grassland, shortening the time period for the degraded sheepgrass grassland to return to a healthy state, and improving the productivity and ecological function of the grassland.

[0008] Preferably, an adjusting mechanism is provided on the frame, and the adjusting mechanism is configured to support the rear of the frame and adjust the cutting depth of the root cutting assembly along the height direction of the frame.

[0009] Preferably, a transmission component is provided on the frame, and the transmission component is used to transmit the power of the traction device to the root cutting assembly.

[0010] Preferably, a running wheel is provided at the bottom of the frame, and the running wheel is coaxially arranged with the rotating shaft of the punching assembly.

[0011] Preferably, the punching assembly includes a rotating shaft and a punching unit. The rotating shaft is installed at the bottom of the frame through a bearing seat. Multiple groups of punching units are arranged in a linear array on the side wall of the rotating shaft along the axial direction of the rotating shaft, and the spacing between adjacent punching units is 200mm-300mm.

[0012] Preferably, the punching unit comprises a punching roller and punching teeth, the punching roller is mounted on the side wall of the rotating shaft through a key connection, and the punching teeth are evenly distributed on the side wall of the punching roller.

[0013] Preferably, the root cutting assembly includes a roller shaft and a cutting disc. The roller shaft is installed at the bottom of the frame through a bearing seat. The roller shaft is arranged parallel to the punching assembly. Multiple cutting discs are arranged in a linear array on the side wall of the roller shaft along the axial direction of the roller shaft. Each cutting disc is located between a pair of punching belts.

[0014] Preferably, the fertilization assembly includes a tank body for storing liquid fertilizer and a conveying pipeline. The tank body is installed on the top of the frame. A discharge hole is provided at the bottom of the tank body. The conveying pipeline is connected to the discharge hole. The conveying pipeline is connected to the frame through a support plate. Branch pipes are provided on the side walls of the conveying pipeline. The branch pipes correspond one-to-one to the root cutting areas.

[0015] In a second aspect, the present invention further proposes a restoration method using the root cutting device for degraded Leymus chinensis grassland, comprising the following steps: The traction equipment is started, and the root cutting device is pulled slowly forward on the degraded Leymus chinensis grassland. As the frame moves, the punching assembly rotates due to the movement of the frame, and multiple punching belts are punched on the Leymus chinensis grassland along the walking path of the frame. Root cutting channels to be cut are reserved between the multiple punching belts for the root cutting assembly; The root cutting assembly rotates downward from the surface of the Leymus chinensis grassland under the action of power transmission. The cutting depth of the root cutting assembly is suitable to effectively loosen the soil compaction layer between adjacent perforated belts and cut off the root system of the Leymus chinensis. The root cutting assembly constructs a root cutting area in the root cutting channel along the walking path of the frame to reduce the disturbance to the surface plants. The fertilization component located on the top of the frame applies fertilizer in the root cutting area. According to the soil fertility test results of the sheep grass grassland and the growth requirements of the sheep grass, the type and amount of fertilizer are reasonably allocated to ensure that the fertilizer is evenly spread in the root cutting area.

[0016] Preferably, the drilling depth of the drilling assembly is determined according to the degree of soil compaction in the sheep fescue grassland and the distribution depth of the sheep fescue root system, and the drilling depth is 10cm-20cm.

[0017] Preferably, the cutting depth of the root cutting component is 15 cm-25 cm.

[0018] Compared with the prior art, the root cutting device and repair method for degraded Leymus chinensis grassland provided by the present invention have the following outstanding substantive features and significant improvements: 1. The root cutting device for degraded Leymus chinensis grassland has a punching assembly, a root cutting assembly and a fertilizing assembly arranged in sequence on the frame along the walking direction, integrating the functions of punching, root cutting and fertilizing, greatly reducing the investment cost of the equipment and the complexity of operation. Multiple key repair steps can be completed in one operation, improving the operation efficiency, reducing the overall repair cost of the degraded Leymus chinensis grassland and reducing the damage to the grassland.

[0019] 2. The punching assembly in the root cutting device for degraded Leymus chinensis grassland can form multiple punching belts on the Leymus chinensis grassland. The root cutting assembly then loosens the soil compaction layer between adjacent punching belts and cuts off the Leymus chinensis root system, thereby accurately constructing the root cutting area between the punching belts along the frame walking path, and specifically dealing with the soil compaction problem and stimulating the regeneration of the Leymus chinensis root system. Compared with some traditional extensive root cutting methods, it can avoid excessive interference with non-compacted areas or areas that do not require root cutting, protect the integrity of the original ecological structure of the Leymus chinensis grassland, and at the same time ensure that the root cutting effect is concentrated in the areas that need repair the most, thereby improving the regeneration efficiency of the Leymus chinensis root system and the repair quality of the grassland.

[0020] 3. The root cutting device for degraded sheepgrass grassland uses a punching component to break the soil compaction layer and form a ventilation channel in the soil compaction layer, so that air can enter the soil more smoothly, providing sufficient oxygen supply for the roots of sheepgrass, which is beneficial to promote the growth and development of the root system. In addition, the root cutting component cuts off the sheepgrass network root system between the punching belts to promote the tillering and expansion of sheepgrass, which can stimulate the sheepgrass root system to sprout new roots again, increase the vitality of the root system and the ability to absorb nutrients. The fertilization component then fertilizes the root cutting area, so that the fertilizer can be accurately applied to the vicinity of the sheepgrass root system, improve the fertilizer utilization rate, better provide nutrient support for the growth of sheepgrass, promote the rapid growth of sheepgrass and the ecological restoration of the grassland, shorten the time period for the degraded sheepgrass grassland to return to a healthy state, and improve the productivity and ecological function of the grassland. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of a root cutting device for degraded Leymus chinensis grassland in an embodiment of the present invention.

[0022] Figure 2 yes Figure 1 A schematic diagram of the three-dimensional structure of a root cutting device for degraded Leymus chinensis grassland from another perspective.

[0023] Figure 3 yes Figure 1 main view.

[0024] Figure 4 yes Figure 3 Top view of the .

[0025] Figure 5 yes Figure 3 Rear view of.

[0026] Figure numerals: 1. frame; 2. suspension frame; 3. punching assembly; 4. root cutting assembly; 5. fertilization assembly; 6. adjustment mechanism; 7. transmission component; 8. walking wheel; 9. punching belt; 10. root cutting area; 31. rotating shaft; 32. punching unit; 41. roller shaft; 42. cutting disc; 51. tank body; 52. conveying pipeline; 53. support plate; 54. branch pipe; 61. telescopic sleeve; 62. support wheel; 71. transmission box; 72. transmission shaft; 73. chain drive mechanism; 321. punching roller; 322. punching teeth. DETAILED DESCRIPTION

[0027] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0028] like Figure 1-Figure 5 As shown, in an embodiment of the present invention, a root cutting device for degraded Leymus chinensis grassland is proposed, which aims to solve the problems of root degradation, soil compaction, difficulty in mechanized restoration and ecological imbalance of mowing grassland faced by existing Leymus chinensis grassland, realize the sustainable utilization of Leymus chinensis grassland, and improve the regeneration efficiency of Leymus chinensis root system and the restoration quality of grassland.

[0029] A root cutting device for degraded Leymus chinensis grassland proposed in an embodiment of the present invention uses a perforating assembly to break the soil compaction layer, and forms a ventilation channel in the soil compaction layer, so that air can enter the soil more smoothly, providing sufficient oxygen supply for the roots of Leymus chinensis, which is conducive to promoting the growth and development of the root system. In addition, the root cutting device cuts off the Leymus chinensis network root system through the root cutting assembly between the perforated belts to promote the tillering and expansion of Leymus chinensis, which can stimulate the Leymus chinensis root system to sprout new roots again, increase the vitality of the root system and the ability to absorb nutrients. The fertilization assembly then fertilizes the root cutting area, so that the fertilizer can be accurately applied to the vicinity of the Leymus chinensis root system, improve the fertilizer utilization rate, better provide nutrient support for the growth of Leymus chinensis, promote the rapid growth of Leymus chinensis and the ecological restoration of the grassland, shorten the time period for the degraded Leymus chinensis grassland to return to a healthy state, and improve the productivity and ecological function of the grassland.

[0030] like Figure 1 Combination Figure 2 As shown, a root cutting device for degraded Leymus chinensis grassland comprises a frame 1, on which a suspension frame 2 for connecting a traction device is arranged. The frame 1 is configured to move on the Leymus chinensis grassland along with the movement of the traction device.

[0031] like Figure 1 Combination Figure 5 As shown, a punching assembly 3, a root cutting assembly 4 and a fertilizing assembly 5 are arranged in sequence on the frame 1 along the traveling direction. Figure 5 The direction indicated by the middle arrow is the direction in which the frame 1 moves along with the traction device.

[0032] like Figure 3 Combination Figure 4 As shown, the punching assembly 3 is installed at the bottom of the frame 1. The punching assembly 3 is configured to rotate with the movement of the frame 1 and punch holes on the Leymus chinensis meadow along the walking path of the frame 1, so that a plurality of punching belts 9 are formed on the Leymus chinensis meadow.

[0033] like Figure 1 Combination Figure 4 As shown, the root cutting assembly 4 is arranged behind the punching assembly 3. The root cutting assembly 4 is configured to rotate downward from the surface of the Leymus chinensis grassland through power transmission, loosen the soil compaction layer between adjacent punching belts 9, cut off the Leymus chinensis roots in the soil, and construct a root cutting area 10 between the punching belts 9 along the walking path of the frame 1.

[0034] like Figure 4 Combination Figure 5 As shown, a fertilizing assembly 5 is installed on the top of the frame 1 for fertilizing the root cutting area 10 .

[0035] Among them, Figure 5 As shown, the fertilization assembly 5 includes a tank 51 for storing liquid fertilizer and a conveying pipeline 52. The tank 51 is installed on the top of the frame 1. A discharge hole is provided at the bottom of the tank 51. The conveying pipeline 52 is connected to the discharge hole. The conveying pipeline 52 is connected to the frame 1 through a support plate 53. A branch pipe 54 is provided on the side wall of the conveying pipeline 52. The branch pipe 54 corresponds to the root cutting area 10 one by one.

[0036] In the process of repairing the sheep grass grassland, the root cutting area 10 is the key part that needs fertilizer supplementation to promote the regeneration and growth of the sheep grass root system. By specially setting up branch pipes 54 corresponding to the root cutting area 10, it can ensure that fertilizer is accurately applied to these areas, avoid fertilizer waste in areas where fertilizer is not needed, and greatly improve fertilizer utilization. Precision fertilization helps sheep grass obtain sufficient nutrients in time after root cutting, accelerates the growth recovery speed, and improves the pertinence and effectiveness of grassland repair effects.

[0037] During the fertilization process, the liquid fertilizer can be more evenly distributed in the soil of the root cutting area 10, and is quickly adsorbed by the soil particles and absorbed by the roots of the sheep grass. At the same time, the liquid fertilizer is not easy to remain or clump on the soil surface, which reduces the waste caused by fertilizer loss or fixation, improves the utilization efficiency of the fertilizer, reduces the cost of fertilization, and helps to reduce the potential pollution risk of fertilizer to the environment.

[0038] The tank 51 is installed on the top of the frame 1, and with the help of the stability of the frame 1, a safe and reliable location is provided for fertilizer storage. The discharge hole at the bottom of the tank 51 is connected to the conveying pipeline 52, and the conveying pipeline 52 is connected to the frame 1 through the support plate 53, so that the entire fertilization assembly 5 remains stable in the complex working environment of the sheep grass grassland. During the movement of the root cutting device, even if it encounters bumps or uneven terrain, the various components of the fertilization assembly 5 can be firmly connected to prevent fertilizer leakage or uneven fertilization due to shaking or displacement, ensure the continuity and stability of the fertilization operation, and ensure that each root cutting area 10 can be supplied with an accurate dose of fertilizer.

[0039] Due to the structural design of the delivery pipeline 52 and the branch pipe 54, valves or flow regulating devices can be conveniently set on the pipeline. The operator can flexibly adjust the amount and speed of fertilizer application of each branch pipe 54 according to factors such as the soil fertility of different root cutting areas 10, the growth requirements of sheep grass, and the type of fertilizer. For example, in areas with low soil fertility, the amount of fertilizer application can be appropriately increased; and in the early and vigorous growth periods of sheep grass, the fertilization rate can also be adjusted to meet its nutritional needs at different stages.

[0040] A root cutting device for degraded Leymus chinensis grassland proposed in an embodiment of the present invention has a punching component 3, a root cutting component 4 and a fertilizing component 5 arranged in sequence on a frame 1 along the walking direction, integrating the functions of punching, root cutting and fertilizing, greatly reducing the investment cost of the equipment and the complexity of operation. The punching component 3 and the root cutting component 4 first pre-treat and repair the grassland, and the fertilizing component 5 then fertilizes the root cutting area 10 along the same operation path, realizing the integrated coordination of the entire grassland restoration operation, avoiding excessive disturbance of the grassland caused by multiple separate operations, improving the operation efficiency, and giving full play to the functions of each component, jointly promoting the comprehensive restoration process of the Leymus chinensis grassland from soil improvement to vegetation restoration, and improving the comprehensive benefits of the entire restoration system.

[0041] Since the degree of soil compaction in different degraded Leymus chinensis grasslands varies greatly, it is necessary to adjust the cutting depth of the root cutting assembly 4 along the height direction of the frame 1. For example, in areas where the soil is severely compacted, it is necessary to increase the cutting depth of the root cutting assembly 4 to ensure that the soil compaction layer can be effectively loosened and the root system of Leymus chinensis can be cut off; while in areas where the soil is relatively loose, it is necessary to appropriately reduce the cutting depth to avoid excessive damage to the soil structure.

[0042] like Figure 1 As shown, an adjustment mechanism 6 is provided on the frame 1. The adjustment mechanism 6 is configured to support the rear of the frame 1 and adjust the cutting depth of the root cutting assembly 4 along the height direction of the frame 1, so that the root cutting device can be widely used in the restoration of degraded Leymus chinensis grasslands under various soil conditions, thereby improving the versatility and adaptability of the device.

[0043] For example, Figure 2 As shown, the adjustment mechanism 6 includes a telescopic sleeve 61 and a support wheel 62. The telescopic sleeve 61 is arranged along the height direction of the frame 1. The mounting end of the telescopic sleeve 61 is connected to the frame 1. The telescopic end of the telescopic sleeve 61 is connected to the support wheel 62. The support wheel 62 supports the rear of the frame 1 through the telescopic sleeve 61.

[0044] The telescopic characteristic of the telescopic sleeve 61 facilitates precise adjustment of the cutting depth of the root cutting assembly 4. The operator can directly observe the telescopic amount of the telescopic sleeve 61 to intuitively understand the change in the height of the root cutting assembly 4 relative to the ground, and then accurately control the cutting depth. For example, the telescopic sleeve 61 can be marked with a scale, and the operator can quickly adjust to the required height position according to the scale, realizing visual and precise operation.

[0045] like Figure 1 As shown, a transmission component 7 is provided on the frame 1. The transmission component 7 is used to transmit the power of the traction device to the root cutting assembly 4. In this way, the traction device and the root cutting assembly 4 are tightly connected by the transmission component 7, and the coordinated operation of the two is realized. When the traction device is moving forward, its power is converted into the rotational power of the root cutting assembly 4 through the transmission component 7, so that the root cutting operation and the movement of the frame 1 can be carried out synchronously, avoiding problems such as discontinuous and uneven root cutting due to power asynchrony. Ensure that the root cutting operation can be carried out continuously and stably on the path of the frame 1 along the sheep grass grassland. In this way, the collaborative operation optimizes the entire repair operation process, improves the operation quality, and is conducive to a more uniform and effective repair treatment of the sheep grass grassland.

[0046] like Figure 2 As shown, the transmission component 7 includes a transmission box 71, a transmission shaft 72 and a chain transmission mechanism 73. The input end of the transmission box 71 is connected to the power output end of the traction device through a universal coupling. The output end of the transmission box 71 is connected to the chain transmission mechanism 73 through the transmission shaft 72. The chain transmission mechanism 73 is used to transmit the torque of the transmission shaft 72 to the root cutting assembly 4.

[0047] like Figure 3 As shown, the bottom of the frame 1 is provided with a running wheel 8. The running wheel 8 is coaxially arranged with the rotating shaft 31 of the punching assembly 3. The running wheel 8 is a direct contact part between the frame 1 and the ground of the sheep grass grassland. During the sheep grass grassland restoration operation, whether on a flat or slightly undulating terrain, the running wheel 8 can stably bear the weight of the frame 1 and the punching assembly 3, the root cutting assembly 4 and the fertilization assembly 5 installed thereon, so that the frame 1 can move smoothly on the grassland. In this way, the stability of the entire root cutting device during operation is ensured, and the accuracy and effectiveness of operations such as punching, root cutting and fertilization are prevented from being affected by the sinking or tilting of the frame 1.

[0048] Moreover, the rotation of the running wheel 8 is closely related to and synchronous with the operation of the punching assembly 3. When the traction device drives the frame 1 forward, the running wheel 8 rotates, and the punching assembly 3 starts the punching operation synchronously, ensuring that the punching operation is accurately matched with the traveling speed of the frame 1, avoiding the problems of missed punching, duplication, or twisting of the punching belt 9 due to asynchrony.

[0049] like Figure 3 , Figure 4 As shown, the punching assembly 3 includes a rotating shaft 31 and a punching unit 32. The rotating shaft 31 is mounted on the bottom of the frame 1 through a bearing seat. A plurality of punching units 32 are arranged in a linear array on the side wall of the rotating shaft 31 along the axial direction of the rotating shaft 31. The spacing between adjacent punching units 32 is 200mm-300mm.

[0050] Multiple groups of punching units 32 are arranged in a linear array along the axis of the rotating shaft 31, and a uniform punching layout can be achieved on the sheep grass grassland. The evenly distributed perforated belt 9 can evenly improve the air permeability and water permeability of the soil, avoiding excessive differences in local soil improvement effects due to uneven punching density. In the subsequent root cutting and fertilization operations, the uniform punching layout is conducive to the root cutting component 4 to loosen the soil compaction layer comprehensively and effectively, and the fertilization component 5 to evenly apply fertilizer to the soil, creating conditions for the sheep grass root system to obtain a good growth environment in all areas, promoting the uniform growth of sheep grass, and improving the overall restoration quality of the grassland.

[0051] The spacing between adjacent perforated units 32 can be adjusted according to the actual degradation of the Leymus chinensis grassland. For example, in areas where the soil is severely compacted and the root system is well developed, the spacing can be appropriately reduced and the perforation density can be increased to better loosen the soil and cut off some of the roots that hinder the growth of Leymus chinensis; while in areas where the soil is relatively loose and the root system is shallow, the spacing can be appropriately increased to avoid excessive perforation causing damage to the soil structure.

[0052] According to some preferred embodiments of the present invention, Figure 3 As shown, the punching unit 32 includes a punching roller 321 and punching teeth 322. The punching roller 321 is mounted on the side wall of the rotating shaft 31 through a key connection. The punching teeth 322 are evenly arranged on the side wall of the punching roller 321.

[0053] The punching roller 321 is mounted on the side wall of the rotating shaft 31 through a key connection, which ensures the stability of the connection between the punching roller 321 and the rotating shaft 31. During the punching operation, when the rotating shaft 31 rotates at a high speed, the key connection can effectively transmit power, so that the punching roller 321 rotates synchronously and stably, avoiding problems such as slipping or loose connection.

[0054] The punching teeth 322 are evenly arranged on the side wall of the punching roller 321, and the force exerted by each punching tooth 322 on the ground is evenly distributed. When the punching roller 321 rotates with the rotating shaft 31, each punching tooth 322 contacts the ground and punches holes in turn, and can punch holes with relatively consistent depth and diameter on the sheep grass grassland. The uniform punching effect helps to ensure the uniformity of the improvement of soil aeration and water permeability, so that the sheep grass root system can obtain a similar growth environment in the entire restoration area, promoting the uniform growth of sheep grass.

[0055] The design of the punching teeth 322 can be optimized and adjusted according to different soil types. For example, in relatively hard soil, sharp and thick punching teeth 322 can be used to more easily penetrate the soil and form holes; while in relatively soft soil, relatively small punching teeth 322 can be used to complete the punching task while reducing excessive damage to the soil structure.

[0056] like Figure 5 As shown, the root cutting assembly 4 includes a roller 41 and a cutting disc 42. The roller 41 is installed at the bottom of the frame 1 through a bearing seat. The roller 41 is arranged parallel to the punching assembly 3. A plurality of cutting discs 42 are arranged in a linear array on the side wall of the roller 41 along the axial direction of the roller 41. Each cutting disc 42 is located between a pair of punching belts 9.

[0057] When the roller 41 rotates, each cutting disc 42 cuts into the soil in turn, which can evenly loosen the soil compaction layer and neatly cut the sheep fescue roots, making the cutting depth and length relatively consistent, helping the sheep fescue roots to grow evenly in the repaired grassland, avoiding the growth inhibition or excessive growth of sheep fescue in some areas due to uneven root cutting, thereby ensuring the overall ecological stability and aesthetics of the grassland and improving the overall quality of the grassland.

[0058] For example, the cutter disc 42 is also connected by a key to be installed on the roller shaft 41 to improve the reliability of the cutter group during operation. The blades on the side walls of the cutter disc 42 are all connected to each other with the cutting guide disc by two bolts to ensure stability during root cutting in the soil.

[0059] The present invention also provides a method for restoring degraded Leymus chinensis grassland, comprising the following steps: 1. Preparation before repair Check the root cutting device for degraded Leymus chinensis grassland to ensure that the frame 1 is intact and undamaged, the suspension frame 2 can be normally connected to the traction equipment, and the punching component 3, the root cutting component 4 and the fertilizing component 5 are all firmly installed and can operate normally.

[0060] According to the area, topography and other conditions of the Leymus chinensis grassland, suitable traction equipment, such as a tractor, is selected and firmly connected to the suspension frame 2 of the root cutting device.

[0061] 2. Root cutting repair operation The traction device is started, and the root cutting device is pulled slowly forward on the degraded Leymus chinensis grassland. As the frame 1 moves, the punching assembly 3 rotates due to the movement of the frame 1, and a plurality of punching belts 9 are punched on the Leymus chinensis grassland along the walking path of the frame 1. The punching depth needs to be reasonably determined based on the degree of soil compaction in the Leymus chinensis grassland and the depth of the root distribution of the Leymus chinensis, and can generally be controlled at 10-20 cm.

[0062] The root cutting assembly 4 behind the punching assembly 3 rotates downward from the surface of the Leymus chinensis grassland under the action of power transmission. The cutting depth is preferably 15-25 cm to effectively loosen the soil compaction layer between the adjacent punching belts 9 and cut off the root system of the Leymus chinensis. The root cutting assembly 4 constructs a root cutting area 10 between the punching belts 9 along the walking path of the frame 1, and the length of the cut Leymus chinensis root system is maintained at 3-8 cm to promote the sprouting of new roots.

[0063] During the root cutting process, attention should be paid to the operating state of the root cutting assembly 4 to ensure that its rotation speed is uniform and the cutting angle is appropriate to prevent excessive damage to the Leymus chinensis grassland or incomplete root cutting.

[0064] 3. Fertilization operation The fertilization component 5 on the top of the root cutting device applies fertilizer in the root cutting area 10. According to the soil fertility test results of the leymus chinensis grassland and the growth requirements of the leymus chinensis, the type and amount of fertilizer are reasonably allocated. For example, nitrogen, phosphorus and potassium compound fertilizer can be selected, and the amount of fertilizer per mu is 15-25 kg.

[0065] When applying fertilizer, it is necessary to ensure that the fertilizer is evenly spread on the root cutting area 10, which can be achieved by adjusting the size of the discharge port of the fertilizer application component 5, the fertilizer application speed and other parameters.

[0066] 4. Post-repair management After restoration, the grassland of Leymus chinensis needs to be properly irrigated to ensure soil moisture and provide sufficient water for the growth of Leymus chinensis. The amount of irrigation is determined according to the local climate, soil moisture conditions, etc. Generally, each irrigation makes the soil moisture content reach 60%-70%.

[0067] Regularly inspect the sheepgrass grassland to observe the growth status of the sheepgrass, including germination rate, plant height, density, etc. If problems such as pests and diseases are found, take corresponding prevention and control measures in time, such as spraying biological pesticides or using physical prevention methods.

[0068] During the growth period of Leymus chinensis, appropriate grazing or mowing management can be carried out according to its growth trend. The grazing intensity should be moderate to avoid overgrazing and cause the Leymus chinensis grassland to degrade again; when mowing, the stubble height should be controlled at 5-8 cm to facilitate the regeneration and recovery of Leymus chinensis.

[0069] The present invention is not limited to the specific technical solutions described in the above embodiments. In addition to the above embodiments, the present invention may also have other implementation modes. For those skilled in the art, any technical solutions formed by any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A root cutting device for degraded Leymus chinensis grassland, comprising a frame, a suspension frame for connecting a traction device is provided on the frame, and the frame is configured to move on the Leymus chinensis grassland with the movement of the traction device, characterized in that: The frame is also provided with a punching assembly, a root cutting assembly and a fertilizing assembly in sequence along the traveling direction; The punching assembly is installed at the bottom of the frame, and is configured to rotate in response to the movement of the frame, and punch holes on the Leymus chinensis grassland along the walking path of the frame, so that a plurality of punching belts are formed on the Leymus chinensis grassland; The root cutting assembly is arranged behind the punching assembly, and is configured to rotate downward from the surface of the Leymus chinensis grassland through power transmission, loosen the soil compaction layer between adjacent punching belts, cut off the Leymus chinensis root system in the soil, and construct a root cutting area between the punching belts along the walking path of the frame; The fertilization assembly is installed on the top of the frame and is used for fertilizing the root cutting area.

2. The root cutting device for degraded Leymus chinensis grassland according to claim 1, characterized in that: The frame is provided with an adjusting mechanism, which is configured to support the rear of the frame and to adjust the cutting depth of the root cutting assembly along the height direction of the frame.

3. The root cutting device for degraded Leymus chinensis grassland according to claim 1, characterized in that: The frame is provided with a transmission component, and the transmission component is used to transmit the power of the traction device to the root cutting assembly.

4. The root cutting device for degraded Leymus chinensis grassland according to claim 1, characterized in that: A running wheel is arranged at the bottom of the frame, and the running wheel is coaxially arranged with the rotating shaft of the punching assembly.

5. The root cutting device for degraded Leymus chinensis grassland according to claim 1, characterized in that: The punching assembly includes a rotating shaft and a punching unit. The rotating shaft is installed at the bottom of the frame through a bearing seat. Multiple groups of punching units are arranged in a linear array on the side wall of the rotating shaft along the axial direction of the rotating shaft, and the spacing between adjacent punching units is 200mm-300mm.

6. The root cutting device for degraded Leymus chinensis grassland according to claim 5, characterized in that: The punching unit comprises a punching roller and punching teeth. The punching roller is mounted on the side wall of the rotating shaft through a key connection, and the punching teeth are evenly arranged on the side wall of the punching roller.

7. The root cutting device for degraded Leymus chinensis grassland according to claim 1, characterized in that: The root cutting assembly includes a roller shaft and a cutting disc. The roller shaft is installed at the bottom of the frame through a bearing seat. The roller shaft is arranged parallel to the punching assembly. A plurality of cutting discs are arranged in a linear array on the side wall of the roller shaft along the axial direction of the roller shaft. Each cutting disc is located between a pair of punching belts.

8. The root cutting device for degraded Leymus chinensis grassland according to claim 1, characterized in that: The fertilization assembly includes a tank body for storing liquid fertilizer and a conveying pipeline. The tank body is installed on the top of a frame. A discharge hole is provided at the bottom of the tank body. The conveying pipeline is connected to the discharge hole. The conveying pipeline is connected to the frame through a support plate. Branch pipes are provided on the side walls of the conveying pipeline. The branch pipes correspond to the root cutting areas one by one.

9. A repair method, characterized in that: Using the root cutting device for degraded Leymus chinensis grassland as claimed in any one of claims 1 to 8 comprises the following steps: The traction equipment is started, and the root cutting device is pulled slowly forward on the degraded Leymus chinensis grassland. As the frame moves, the punching assembly rotates due to the movement of the frame, and multiple punching belts are punched on the Leymus chinensis grassland along the walking path of the frame. Root cutting channels to be cut are reserved between the multiple punching belts for the root cutting assembly; The root cutting assembly rotates downward from the surface of the Leymus chinensis grassland under the action of power transmission. The cutting depth of the root cutting assembly is suitable to effectively loosen the soil compaction layer between adjacent perforated belts and cut off the root system of the Leymus chinensis. The root cutting assembly constructs a root cutting area in the root cutting channel along the walking path of the frame to reduce the disturbance to the surface plants. The fertilization component located on the top of the frame applies fertilizer in the root cutting area. According to the soil fertility test results of the sheep grass grassland and the growth requirements of the sheep grass, the type and amount of fertilizer are reasonably allocated to ensure that the fertilizer is evenly spread in the root cutting area.

10. The repair method according to claim 9, characterized in that: The drilling depth of the drilling assembly is determined according to the degree of soil compaction in the Leymus chinensis grassland and the depth of the root distribution of the Leymus chinensis, and the drilling depth is 10cm-20cm; The cutting depth of the root cutting component is 15cm-25cm.

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