Summer grass rapid rejuvenation method for cover sowing lawn

Abstract

The invention discloses a summer grass rapid rejuvenation method for a cover-sown lawn, and the method comprises the following steps: judging the condition of the lawn, and aiming at the condition that the density of aframomum melegueta is too high, vertically combing grass, then treating withered grass, and finally fertilizing and watering the lawn. In order to solve the problem caused by moss and weed erosion, moss and weeds are raked away, then chemical prevention and removal are conducted on the lawn, and withered grass is swept away after treatment is conducted for a period of time. Aiming at the condition that aframomum melegueta is sparse, a soil body is perforated, soil residues in the soil body are removed, then a sterilizing agent is sprayed to the lawn for sterilization, and finally grass seeds are sown on the lawn and watered for irrigation. The lawn rejuvenation device has the effect of quickly rejuvenating the cover-sown lawn under different conditions.

Description

Technical Field

[0001] The present application relates to the technical field of municipal greening, and in particular to a method for rapid rejuvenation of summer grass for lawn cover. Background Art

[0002] In municipal greening lawns, in order to ensure that the green lawns are evergreen throughout the year, extend the green period of the lawns, and achieve better lawn formation effects, it is usually necessary to use cover seeding technology to mix warm-season lawns and cold-season lawns in the soil. Cover seeding technology is a sowing method that alternates the formation of lawns by sowing a single or multiple grass species on the lawns that have already been formed. It can solve the problem of lawns turning green in winter in a wide range of regions.

[0003] Perennial ryegrass is a common cool-season turfgrass species. It is drought-resistant, cold-resistant, and resistant to trampling in the lawn environment. It can tolerate low temperatures of -15°C, and its seeds are huge, germinate quickly, and form a lawn quickly. It enters a lush growth period in autumn and winter. It has been widely used in lawn greening. Dwarf Bermuda, also known as paradise grass, is a perennial herbaceous plant of the Poaceae family and a warm-season turfgrass species. Paradise grass likes light, is slightly shade-tolerant, has soft grass, and is resistant to trampling. Paradise grass likes well-drained fertile soil, has strong salt and alkali tolerance, stops growing below 16°C, and its leaves turn brown at 7-10°C.

[0004] At present, ryegrass is pruned in spring to control height. In March and April, the temperature gradually rises, the paradise grass begins to gradually germinate, and the ryegrass also begins to grow vigorously. In spring and summer, the following problems are prone to occur in cover-seeded lawns. First: When the density of the paradise grass layer in the lower layer is too high, it will affect the normal growth of the upper ryegrass, making its germination sparse. At the same time, the paradise grass in the lower layer is prone to diseases, causing lawn alopecia and necrosis. Second: When the cover-seeded lawn is eroded by moss and various weeds, alopecia areata is also prone to occur on the surface of the cover-seeded lawn. Third: When the soil voids are small, it is easy to breed bacteria and cause alopecia or sparse paradise grass in the lower layer.

[0005] With respect to the above-mentioned related technologies, the inventors believe that if the same treatment method is used when the above-mentioned cover-seeded lawn encounters the above-mentioned various situations, it cannot specifically play a role in the rapid rejuvenation of the cover-seeded lawn, affecting the growth condition and ornamental effect of the lawn. Summary of the invention

[0006] In order to achieve rapid rejuvenation of cover-seeded lawns under different circumstances, the present application provides a method for rapid rejuvenation of summer grass in cover-seeded lawns.

[0007] The present application provides a method for rapid rejuvenation of summer grass for lawn cover seeding, which adopts the following technical scheme: A method for rapid rejuvenation of summer grass for covered lawns, comprising the following steps: S1: Judgment before treatment: The operator first makes a specific judgment on the growth status of the covered lawn to determine whether the problem of the covered lawn is due to the high density of the lower heaven grass, the erosion of moss and weeds, or the soil is too compact; S2: In order to solve the problem caused by the high density of the lower heaven grass, a grass combing device is first used to vertically cut and comb the grass on the covered lawn. The grass combing depth is 15-20cm. After the grass combing, the cleaned dead grass is cleaned up; S3: To solve the problem caused by moss and weed erosion, first rake the weeds and moss, then carry out chemical control of moss and weeds on the cover lawn, and spray chemical control agents on the cover lawn.

[0008] S4: To address the problem caused by the soil being too compact, first use a punching device to punch holes in the sparsely bald areas on the covered lawn. The drilling depth should be 10-15cm, and the soil residue remaining in the holes should be removed promptly. Then, spray the fungicide evenly on the covered lawn.

[0009] By adopting the above technical solution and using different operation modes to treat the cover-seeded lawns in different situations, the effect of quickly rejuvenating the cover-seeded lawns in different situations can be achieved.

[0010] Optionally, in the step S2, after the dead grass is cleaned, the covered lawn is fertilized in time, and instant organic fertilizer is evenly sprayed on the lawn. After fertilization, the lawn is sprayed and watered in time.

[0011] By adopting the above technical scheme, after combing the grass, the density of the lower layer of paradise grass decreases. At this time, fertilization helps the rapid growth and rejuvenation of ryegrass and paradise grass. Spraying and watering are carried out in time after fertilization. On the one hand, the fertilizer is diluted, and on the other hand, the fertilizer on the leaves is washed off to prevent leaf burns.

[0012] Optionally, in step S3, the cycle of chemical control is 10-15 days, and after the chemical control of the lawn is completed, the dead weeds are raked off the lawn.

[0013] By adopting the above technical solution, after a period of chemical control, the remaining weeds and mosses die, and the dead weeds and mosses are removed to avoid blocking the light of the lawn and occupying the growth space of the grass seeds.

[0014] Optionally, in step S4, after spraying the sterilizer, the lawn is sown with paradise grass seeds and sprayed with water in a timely manner.

[0015] By adopting the above technical solution, grass seeds are sown and water is sprayed to achieve further rapid rejuvenation of the lawn.

[0016] Optionally, in step S3, after the chemical pest control agent is continuously used for the same grass species in the same area for a period of time, the chemical pest control agent needs to be replaced and used alternately.

[0017] By adopting the above technical scheme, in order to prevent the development of drug resistance of pathogens, after using the same chemical control agent for a period of time continuously on the same grass species in the same area, multiple other fungicides are used alternately to prevent the development and growth of drug-resistant hyphae.

[0018] Optionally, the punching device used in the S4 step includes a punching cart, the punching cart includes a mobile frame and a punching assembly, the punching assembly is arranged on the mobile frame, the punching assembly includes a central connecting shaft, a rotating cylinder and a plug-in punching tube, the central connecting shaft is horizontally arranged on the mobile frame, the rotating cylinder is hollow, the central connecting shaft is rotatably connected to the rotating cylinder along the direction of the central axis, the plug-in punching tube is arranged in a plurality of rows on the outer ring wall of the rotating cylinder along its length direction, the plug-in punching tube is connected to the inner cavity of the rotating cylinder, and a cleaning assembly for cleaning the inside of the plug-in punching tube is arranged in the rotating cylinder.

[0019] By adopting the above technical solution, when drilling holes in the soil, the operator pushes the drilling cart on the lawn, and the rotating drum rolls on the covered lawn. The plug-in drilling tube set on the rotating drum is inserted into the soil to drill holes. The soil in the hole enters the plug-in drilling tube and is lifted up as the rotating drum rotates, so that the soil residue in the hole is cleaned. After the drilling and residue removal of the soil are completed, the soil in the plug-in drilling tube is cleaned by the cleaning component so that it can cope with the next round of drilling operations.

[0020] Optionally, the cleaning assembly includes a connecting box body, a sliding abutment plate, a cleaning air bag and an abutment cam, the connecting box body is provided with a plurality of connecting box bodies along its length direction on the inner ring wall of the rotating cylinder, a plurality of the connecting box bodies are provided in a one-to-one correspondence with a plurality of rows of the plug-in perforated tubes, the cleaning air bag is provided in the connecting box body, the cleaning air bag is connected to a corresponding plurality of the plug-in perforated tubes, the sliding abutment plate is slidably provided in the connecting box body, the sliding abutment plate is affixed and connected to a side of the cleaning air bag away from the inner ring wall of the rotating cylinder, the abutment cam is connected to the central connecting shaft, the edge with a longer radius of the abutment cam is inclined and extends upward, and a yield groove corresponding to the abutment cam is provided on a side of the connecting box body away from the rotating cylinder.

[0021] By adopting the above technical solution, the rotating cylinder rotates relative to the central connecting shaft. When the plug-in perforated tube containing soil rotates to a certain position with the rotating cylinder, the abutment cam extends into the connecting box body through the giving way slot and abuts against the sliding abutment plate. The sliding abutment plate slides in the direction close to the plug-in perforated tube, and the cleaning airbag is squeezed under the action of the sliding abutment plate. The gas is ejected through the plug-in perforated tube and the soil therein, thereby cleaning the inside of the plug-in perforated tube, so that the next perforation can be made and the soil residue in the hole can be removed. When the connecting box body is separated from the abutment cam, the cleaning airbag expands to achieve reset.

[0022] Optionally, a return spring is provided in the connecting box body, one end of the return spring is connected to the inner wall of the connecting box body away from the inner ring wall of the rotating cylinder, and the other end is connected to the sliding plate, and an air inlet hole and an air outlet hole are provided on the connecting box body, and the air outlet hole is connected to the plug-in perforated tube, and a cleaning check valve and a reset check valve are provided on the cleaning air bag, and the cleaning check valve is arranged between the cleaning air bag and the plug-in perforated tube, and the reset check valve is arranged in the air inlet hole.

[0023] By adopting the above technical solution, the setting of the reset spring enables the sliding plate to quickly reset and drive the cleaning airbag to expand and reset. When the volume of the cleaning airbag is reduced, the gas is ejected through the air outlet and the cleaning one-way valve. When the volume of the cleaning airbag is increased, the gas enters the elastic airbag through the air inlet and the reset one-way valve. The setting of the cleaning one-way valve and the reset one-way valve realizes the one-way flow of gas, preventing the external soil from entering the cleaning airbag through the plug-in perforated tube.

[0024] Optionally, a plurality of connecting sleeves are provided on the outer ring wall of the rotating cylinder, and the plug-in perforated tube corresponds to the plurality of connecting sleeves one by one and is threadedly connected.

[0025] By adopting the above technical solution, the connecting sleeve is threadedly connected to the plug-in perforating tube. According to different perforating depth requirements, the overall length of the perforating piece can be adjusted by screwing the plug-in perforating tube, thereby expanding its scope of application.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. Use different operation methods to treat the covered lawns in different situations, which has the effect of achieving rapid rejuvenation of the covered lawns in different situations; 2. Fertilizing the lawn after combing the grass will help the ryegrass and paradise grass grow quickly and rejuvenate. Spray and water the lawn in time after fertilizing, which can dilute the fertilizer on the leaves and wash off the fertilizer on the leaves to prevent leaf burns. 3. The connecting sleeve is threadedly connected to the plug-in punching tube. According to different punching depth requirements, the overall length of the punching piece can be adjusted by screwing the plug-in punching tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of the punching cart used in the embodiment of the present application.

[0028] Figure 2 It is a partial view used to reflect the internal structure of the rotating drum in the embodiment of the present application.

[0029] Figure 3 yes Figure 2 Enlarged view of part A in the middle.

[0030] Explanation of the reference numerals: 1. Moving frame; 2. Moving handle; 3. Cleaning assembly; 31. Connecting box body; 311. Giving way slide groove; 32. Sliding abutment plate; 33. Cleaning airbag; 34. Cleaning one-way valve; 35. Resetting one-way valve; 36. Resetting spring; 37. Abutment cam; 4. Punching assembly; 41. Center connecting shaft; 42. Rotating cylinder; 421. Connecting hole; 43. Plug-in punching tube; 44. Connecting sleeve; 5. Collecting tank; 6. Rubber guide plate; 7. Moving roller. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-3 The present application is further described in detail. The present application provides a method for rapid rejuvenation of summer grass in a cover-seeded lawn, which has the effect of achieving rapid rejuvenation of cover-seeded lawns in different situations.

[0032] Reference Figure 1 A method for rapid rejuvenation of summer grass for covered lawns comprises the following steps: S1: Before treating the lawn, the operator first judges the condition of the covered lawn and classifies it into three different situations: the density of the bottom paradise grass is too high, affecting the growth of ryegrass, too much weeds and moss causes lawn erosion, and the bottom paradise grass is sparse and alopecia due to the dense soil layer and the growth of fungi.

[0033] S2: In view of the situation that the density of the lower heaven grass is too high, a lawn combing machine is first used to cut and comb the cover lawn in the vertical direction. Among them, the combing depth is 15-20cm. After the combing operation is completed, the dead grass and the cut heaven grass are cleaned up in time. After combing, the density of the lower heaven grass is significantly reduced, the upper ryegrass can grow normally, and the lower heaven grass is not easy to breed diseases and cause lawn alopecia. At this time, the cover lawn is fertilized in time, and the fertilizer applied is a quick-soluble organic fertilizer, which is conducive to the rapid integration of fertilizer into the soil. Spread the fertilizer evenly on the lawn, and control the amount of fertilizer to 8-15kg / mu. Water it in time after spreading the fertilizer. On the one hand, dilute the fertilizer, and on the other hand, let the fertilizer leave the leaves and enter the soil in time to prevent the leaves from burning. Fertilizer should be applied in windless or low-wind weather, and high-temperature fertilization should be avoided. Fertilization should not be performed when pests and diseases occur. Rapid rejuvenation of the lawn after combing and cutting is achieved through fertilization and watering.

[0034] S3: For the situation where there are too many weeds and mosses, first use manual methods to rake the mosses in the lawn, and at the same time pull out most of the weeds in the cover lawn. For some remaining weeds and mosses that are difficult to rake, they are chemically controlled. In this application, Qingmojing is used in combination with sulfamethoxazole to evenly spray the cover lawn, wherein Qingmojing 100ml per bottle is diluted with 160kg of water, and sulfamethoxazole 5g per bag is diluted with 16kg of water. The chemical control treatment cycle is 10-15 days. After the remaining weeds and mosses die, they are raked with a rake to prevent them from affecting the light of the lawn and occupying the growth space of the grass seeds.

[0035] S4: In view of the sparse and alopecia of the lower heaven grass, first use a punching device to punch holes in the sparse and alopecia area of ​​the soil, and control the drilling depth within the range of 10-15cm. Remove the soil residue produced by the drilling to ensure the air permeability and water retention of the soil, and then spray with 1000-1500 times liquid of 50% carbendazim wettable powder for sterilization. In order to prevent the development of drug resistance in pathogens, after carbendazim is used continuously for a period of time in the same area and the same grass species, multiple fungicides should be used alternately as much as possible to prevent the development and development of drug-resistant hyphae. Commonly used alternative fungicides include mancozeb, thiram, chlorothalonil, and captan. After drilling and sterilization, add heaven grass seeds to the covered lawn, use organic fertilizer mixed with soil and add heaven grass seeds for even application, and the amount of grass seeds is 20-25g / square meter. After sowing the grass seeds, spray water in time. When the temperature is 25℃, spray once in the morning and evening. Use the spraying method to prevent the additional grass seeds from being washed away by water and germination unevenly. Since the pathogenic fungus is a facultative parasitic fungus, it is particularly serious in lawns with obstructed air circulation and poor drainage. The soil drainage and density are adjusted by drilling holes to control the growth of the fungus.

[0036] Reference Figure 1The punching device used in step S4 includes a punching cart, which includes a moving frame 1, a moving handle 2, a moving roller 7 and a punching assembly 4. A plurality of moving rollers 7 are arranged below the moving frame 1, the moving handle 2 is arranged obliquely on the moving frame 1, and the punching assembly 4 is arranged at the bottom end of the moving frame 1.

[0037] Reference Figure 1-3 The punching assembly 4 includes a central connecting shaft 41, a rotating cylinder 42, a plug-in punching tube 43 and a connecting sleeve 44. The central connecting shaft 41 is horizontally fixedly connected to the bottom end of the mobile frame 1, and the rotating cylinder 42 is hollow. The central connecting shaft 41 penetrates the rotating cylinder 42 along the central axis direction of the rotating cylinder 42 and is rotatably connected thereto. A plurality of rows of connecting holes 421 are provided on the peripheral wall of the rotating cylinder 42 along its length direction. A plurality of connecting sleeves 44 are provided on the outer peripheral wall of the rotating cylinder 42, and the plurality of connecting sleeves 44 correspond to the plurality of connecting holes 421 one by one and are connected thereto. A plug-in punching tube 43 is threadedly connected to each connecting sleeve 44, and the plug-in punching tube 43 is provided with an inclined end face away from the opening end of the rotating cylinder 42.

[0038] Reference Figure 2 and Figure 3 The cleaning assembly 3 is arranged inside the rotating cylinder 42, and the cleaning assembly 3 includes a connecting box body 31, a sliding plate 32, a cleaning airbag 33, a cleaning check valve 34, a reset check valve 35, a reset spring 36 and abutting cam 37. The connecting box body 31 is connected to a plurality of connecting boxes 31 on the inner ring wall of the rotating cylinder 42 along its length direction, and the plurality of connecting boxes 31 are arranged one-to-one with the plurality of rows of connecting holes 421. The connecting box body 31 is provided with a plurality of air outlet holes arranged one-to-one with the connecting holes 421 on one side of the connecting box body 31 close to the inner ring wall of the rotating cylinder 42.

[0039] Reference Figure 2 and Figure 3 The sliding plate 32 is slidably arranged in the connecting box body 31, and the cleaning airbag 33 is arranged in the connecting box body 31. The cleaning airbag 33 is arranged on the side of the sliding plate 32 close to the inner wall of the rotating cylinder 42 and connected to the sliding plate 32. An air inlet hole is provided on one side of the connecting box body 31, and the air inlet hole is connected to the inner cavity of the cleaning airbag 33, and the reset check valve 35 is arranged in the air inlet hole. A plurality of abutting cams 37 are fixedly arranged at intervals on the central connecting shaft 41, and the side of the abutting cam 37 with a longer radius is inclined and extended upward. A plurality of giving way grooves 311 are provided on the side of the connecting box body 31 away from the rotating cylinder 42, and the plurality of giving way grooves 311 are arranged one by one with the plurality of abutting cams 37. A reset spring 36 is arranged in the connecting box body 31, and one end of the reset spring 36 is connected to the side of the sliding plate 32 away from the inner ring wall of the rotating cylinder 42, and the other end is connected to the inner wall of the connecting box body 31 away from the inner ring wall of the rotating cylinder 42.

[0040] Reference Figure 2 A collecting groove 5 is provided at the bottom end of the movable frame 1, and the setting position of the collecting groove 5 corresponds to the extending direction of the side with a longer radius of the abutting cam 37. A rubber guide plate 6 is fixedly and obliquely connected to the side of the collecting groove 5 close to the rotating cylinder 42.

[0041] Reference Figure 1-3 Before drilling holes in the lawn, according to the required drilling depth, the plug-in punching tube 43 is screwed to adjust the overall length of the punching member. After completion, the punching cart is pushed on the lawn, the rotating cylinder 42 rolls on the lawn, and several rows of plug-in punching tubes 43 arranged on the rotating cylinder 42 are inserted into the soil in sequence to drill holes. The soil residue in the hole enters the plug-in punching tube 43 and the connecting sleeve 44, and is lifted up with the rotation of the rotating cylinder 42, so that the soil residue in the hole can be cleaned while drilling. When the plug-in punching tube 43 rotates to a certain position, the edge of the abutting cam 37 extends into the interior of the connecting box body 31 through the giving way slot 311, and the abutting cam 37 pushes the sliding plate 32 toward the direction close to the inner ring wall of the rotating cylinder 42, so as to squeeze the cleaning airbag 33, and the gas in the cleaning airbag 33 is ejected through the cleaning check valve 34, and the soil residue in the plug-in punching tube 43 and the connecting sleeve 44 is blown out. The blown dirt and debris fall into the collecting tank 5 under the guidance of the rubber guide plate 6 for collection. As the rotating cylinder 42 continues to rotate, the sliding plate 32 separates from the abutting cam 37, and the sliding plate 32 is reset under the action of the reset spring 36, and the gas flows into the cleaning airbag 33 through the reset check valve 35 to expand it. The reset check valve 35 and the cleaning check valve 34 prevent the external dirt and debris from entering the cleaning airbag 33 through the connecting hole 421.

[0042] The implementation principle of a summer grass rapid rejuvenation method for a cover-seeded lawn in the embodiment of the present application is: using different operation modes to treat cover-seeded lawns in different situations has the effect of achieving rapid rejuvenation of cover-seeded lawns in different situations. Using a punching cart to punch holes in the soil and clean and collect soil residues at the same time helps to improve the efficiency of soil treatment.

[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A method for rapid rejuvenation of summer grass for covered lawns, characterized in that: The method comprises the following steps: S1: Judgment before treatment: The operator first makes a specific judgment on the growth status of the covered lawn to determine whether the problem of the covered lawn is due to the high density of the lower heaven grass, the erosion of moss and weeds, or the soil is too compact; S2: In order to solve the problem caused by the high density of the lower heaven grass, a grass combing device is first used to vertically cut and comb the grass on the covered lawn. The grass combing depth is 15-20cm. After the grass combing, the cleaned dead grass is cleaned up; S3: To solve the problem caused by moss and weed erosion, first rake the weeds and moss, then carry out chemical control of moss and weeds on the cover lawn, and spray chemical control agents on the cover lawn. 2.S4: To address the problem caused by the soil being too compact, first use a punching device to punch holes in the sparsely bald areas on the covered lawn. The drilling depth should be 10-15cm, and the soil residue remaining in the holes should be removed promptly. Then, spray the fungicide evenly on the covered lawn.

3. A method for rapid rejuvenation of summer grass for cover-seeding lawn according to claim 1, characterized in that: In the step S2, after the dead grass is cleaned, the covered lawn is fertilized in time, and instant organic fertilizer is evenly sprayed on the lawn. After fertilization, the lawn is sprayed and watered in time.

4. A method for rapid rejuvenation of summer grass for cover-seeding lawn according to claim 1, characterized in that: In the step S3, the cycle of chemical control is 10-15 days. After the chemical control of the lawn is completed, the dead weeds are raked off the lawn.

5. A method for rapid rejuvenation of summer grass for cover-seeding lawn according to claim 1, characterized in that: In the step S4, after spraying the sterilizer, the lawn is sown with paradise grass seeds and sprayed with water in time.

6. A method for rapid rejuvenation of summer grass for cover-seeding lawn according to claim 3, characterized in that: In the step S3, after the chemical pest control agent is continuously used for the same grass species in the same area for a period of time, the chemical pest control agent needs to be replaced and used alternately.

7. A method for rapid rejuvenation of summer grass for cover-seeding lawn according to claim 1, characterized in that: The punching device used in the S4 step comprises a punching cart, the punching cart comprises a movable frame (1) and a punching assembly (4), the punching assembly (4) is arranged on the movable frame (1), the punching assembly (4) comprises a central connecting shaft (41), a rotating cylinder (42) and a plug-in punching tube (43), the central connecting shaft (41) is horizontally arranged on the movable frame (1), the rotating cylinder (42) is hollow, the central connecting shaft (41) is rotatably connected to the rotating cylinder (42) along the central axis direction, the plug-in punching tube (43) is arranged in a plurality of rows along the length direction on the outer ring wall of the rotating cylinder (42), the plug-in punching tube (43) is connected to the inner cavity of the rotating cylinder (42), and the rotating cylinder (42) is provided with a cleaning assembly (3) for cleaning the inside of the plug-in punching tube (43).

8. A method for rapid rejuvenation of summer grass for cover-seeding lawns according to claim 6, characterized in that: The cleaning assembly (3) comprises a connecting box body (31), a sliding abutment plate (32), a cleaning airbag (33) and an abutment cam (37); the connecting box body (31) is provided with a plurality of connecting box bodies (31) on the inner ring wall of the rotating cylinder (42) along its length direction; the plurality of connecting box bodies (31) are provided in a one-to-one correspondence with the plurality of rows of the plug-in perforated tubes (43); the cleaning airbag (33) is provided in the connecting box body (31); the cleaning airbag (33) is communicated with the corresponding plurality of the plug-in perforated tubes (43) The sliding plate (32) is slidably arranged in the connecting box body (31), the sliding plate (32) is attached to and connected with the side of the cleaning air bag (33) away from the inner ring wall of the rotating cylinder (42), the abutment cam (37) is connected to the central connecting shaft (41), the edge with a longer radius of the abutment cam (37) is inclined and extends upward, and a side of the connecting box body (31) away from the rotating cylinder (42) is provided with a yielding groove (311) corresponding to the abutment cam (37).

9. A method for rapid rejuvenation of summer grass for cover-seeding lawns according to claim 7, characterized in that: A return spring (36) is arranged in the connecting box body (31), one end of the return spring (36) is connected to the inner wall of the connecting box body (31) away from the inner ring wall of the rotating cylinder (42), and the other end is connected to the sliding plate (32). An air inlet and an air outlet are provided on the connecting box body (31), and the air outlet is connected to the plug-in perforated tube (43). A cleaning check valve (34) and a reset check valve (35) are arranged on the cleaning air bag (33), and the cleaning check valve (34) is arranged between the cleaning air bag (33) and the plug-in perforated tube (43), and the reset check valve (35) is arranged in the air inlet.

10. A method for rapid rejuvenation of summer grass for cover-seeding lawns according to claim 8, characterized in that: A plurality of connecting sleeves (44) are connected and arranged on the outer ring wall of the rotating cylinder (42), and the plug-in perforated tube (43) corresponds to the plurality of connecting sleeves (44) one by one and is threadedly connected.

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