High-speed film mulching and punching seeder

Abstract

The invention relates to a high-speed film mulching and punching seeder, and relates to the technical field of agricultural machinery, the high-speed film mulching and punching seeder comprises a rack assembly, a leveling mechanism, a seeding device, a film mulching mechanism, a film breaking device and a control system, the rack assembly is used for being connected with a traction machine, the leveling mechanism is used for leveling land, and the seeding device sows seeds on the leveled land; the film mulching mechanism is used for conducting film mulching on the land after sowing, the film breaking device is used for breaking a mulching film, and the control system monitors the seed falling position of the sowing device and controls the film breaking device to conduct film breaking on the monitored seed falling position. According to the film mulching and punching seeder, the air suction type seed sowing device is used for conducting seed sowing operation, the seed falling monitoring sensor is installed on the seed guiding device, the film breaking device conducts punching and film breaking according to monitoring signals, and precise high-speed film mulching and seeding operation is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of agricultural machinery, and in particular, to a high-speed film mulching and hole punching seeder. Background Art

[0002] The film mulching planting technology has the advantages of water storage and heat preservation, cost reduction and efficiency increase, pest and weed prevention, water saving and yield increase, etc., and has been widely applied. The existing film mulching and seeding agronomic processes are divided into under-film seeding and on-film seeding according to the seeding and film mulching sequence. On-film seeding means first laying the film and then punching holes and sowing on the plastic film. Currently, the commonly used hill-drop planter has a large structure, and there are problems such as film hole adhesion, irregular shape, and soil blockage of the duckbill resulting in missed seeding and missing seedlings; Under-film seeding means sowing before laying the film, and using manual or mechanical means to break the film and punch holes before emergence, and there is also the problem that the film holes are misaligned with the seeds and accurate hole punching cannot be achieved.

[0003] Currently, on-film seeding mainly uses a film mulching seeder with a duckbill roller seed metering device, which can meet the operation requirements of film mulching and seeding. However, with the continuous improvement of agricultural production requirements, the film mulching seeder with a duckbill roller seed metering device has certain limitations in terms of operation speed and adaptability. There is an urgent need to develop a faster and more intelligent film mulching and seeding device to meet the needs of modern agriculture. Under-film seeding mainly uses a film mulching and hole punching seeder, which uses a mechanical or pneumatic seed metering device for seeding operations, lays the film after seeding, and uses a mechanical film breaking device to punch holes above the seeds to complete the entire film mulching and seeding operation process. The existing film mulching and hole punching machines are still in the initial stage, mainly using a roller type film breaking device, and the punched film holes are arranged in a uniformly spaced linear pattern. When the seed metering device malfunctions and causes uneven seeding plant spacing, the phenomenon of misalignment between the film holes and the seeds is serious, which greatly affects the effect of film mulching and seeding operations. Summary of the Invention

[0004] In order to improve the operation speed of film mulching and seeding and solve the problem of film hole misalignment, the present invention provides a high-speed film mulching and hole punching seeder, which performs seeding operations through a pneumatic suction seed metering device, installs a seed dropping monitoring sensor on its seed guiding pipe, and the film breaking device punches holes and breaks the film according to the monitoring signal, so as to achieve accurate and high-speed film mulching and seeding operations.

[0005] A high-speed film mulching and hole punching seeder provided by the present application adopts the following technical solutions:

[0006] A high-speed film mulching and hole punching seeder, the device includes:

[0007] A frame assembly for connecting with a traction machine, including baffle structures arranged oppositely on both sides and a connecting structure connected between the baffle structures on both sides;

[0008] A leveling mechanism for leveling the land, connected between the baffle structures on both sides;

[0009] A seeding device is arranged behind the leveling mechanism and connected between the two side baffle structures for sowing seeds;

[0010] A film covering mechanism is arranged behind the seeding device and connected between the two side baffle structures for covering the film on the land after sowing;

[0011] A film breaking device is arranged behind the film covering mechanism and connected between the two side baffle structures for breaking the film; and

[0012] A control system monitors the seed dropping position of the seeding device and controls the film breaking device to break the film at the monitored seed dropping position.

[0013] As a preferred technical solution of the present application, the baffle structure includes a vertical plate frame at the front section and a horizontal plate frame at the rear section; the connection structure includes a front cross beam connected between the two vertical plate frames and a rear cross beam connected between the two horizontal plate frames. There are two upper and lower front cross beams, which are connected to the towing machine through at least a three-point suspension structure.

[0014] As a preferred technical solution of the present application, the leveling mechanism is set as a pressing roller, and both ends of the pressing roller are rotatably connected to the two side baffle structures.

[0015] As a preferred technical solution of the present application, one or more groups of seeding devices are arranged along the direction perpendicular to the traveling direction of the seeding machine. The seeding device includes a seed box, a pneumatic suction type seed metering device arranged below the seed box, and a seed guiding pipe arranged below the seed outlet of the pneumatic suction type seed metering device. The control system includes a seed dropping monitoring sensor, and the seed dropping monitoring sensor is connected to the seed guiding pipe.

[0016] As a preferred technical solution of the present application, a furrow opener is arranged at the front end of the seeding device, and a pressing wheel and a soil covering wheel are arranged at the rear end. The pressing wheel is arranged directly behind the position of the seed outlet of the seed guiding pipe, and there are two soil covering wheels, which are arranged oppositely on both sides behind the pressing wheel.

[0017] As a preferred technical solution of the present application, a ground wheel shaft is connected between the two side baffle structures at the rear side of the seeding device. Ground wheels are arranged at both ends of the ground wheel shaft, a transmission gear is arranged on the ground wheel shaft, a transmission chain is connected to the transmission gear, and the pneumatic suction type seed metering device is connected to the transmission chain through a gear.

[0018] As a preferred technical solution of the present application, the film covering mechanism includes a film hanging rod and soil covering discs. The film hanging rod is detachably connected between the two side baffle structures, and there are two soil covering discs, which are respectively connected to the outer sides of the ends of the two side baffle structures.

[0019] As a preferred technical solution of the present application, the film-breaking device includes a protective housing, film-pressing wheels arranged at the front and rear ends of the protective housing, two connecting vertical rods oppositely arranged on the front and rear of the lower surface of the protective housing, a film-breaking tool handle connected between the lower ends of the two connecting vertical rods, and a film-breaking knife fixedly connected to the lower surface of one end of the film-breaking tool handle; one end of the film-breaking tool handle is fixedly connected to one of the connecting vertical rods, and the other end is movably connected to the other connecting vertical rod. The film-breaking knife is arranged at the movable end of the film-breaking tool handle, and the control system controls the lifting of the movable end of the film-breaking tool handle.

[0020] As a preferred technical solution of the present application, the control system further includes an electromagnetic clutch and a controller; the electromagnetic clutch includes two parts facing each other up and down, and the two parts can adsorb or separate from each other. The two parts of the electromagnetic clutch are respectively connected to the upper part of the movable end of the film-breaking tool handle and the lower end of the connecting vertical rod opposite to the movable end of the film-breaking tool handle; the controller is electrically connected to the electromagnetic clutch and the seed-drop monitoring sensor respectively. The seed-drop monitoring sensor monitors the seed-drop situation and sends an induction signal to the controller. The controller receives and processes the induction signal. If seed-drop is detected, a control signal is sent to the electromagnetic clutch, and the electromagnetic clutch is opened to make the movable end of the film-breaking tool handle drop, and the film-breaking knife breaks the film at the seed-drop position.

[0021] As a preferred technical solution of the present application, the film-breaking device is arranged directly behind the seeding device, and the number is not less than that of the seeding device.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. The seeding method of the present application is seeding under the film, and an air-suction type seed metering device is adopted, which can effectively improve the speed of film-breaking seeding, solve the problem that the film soil adheres to the duckbill during seeding with a traditional duckbill roller seed metering device, improve the seeding quality, and thus increase the yield. The air-suction type seed metering device belongs to a precision seed metering device with high seeding quality, and no manual thinning is required, effectively reducing the labor cost.

[0024] 2. The machine of the present application is equipped with a press roller, which can compact the land. Compared with soft soil, it is more conducive to ditch opening and film laying, improves the quality of the seed furrow, can reduce the collision and bounce of seeds when falling into the ridge ditch, and improves the seeding uniformity; during the film laying process, the compact and flat soil can make the plastic film laid more flat, reducing the possibility of the plastic film being blown disorderly due to uneven soil covering, and thus indirectly increasing the crop yield.

[0025] 3. The seeding device of the present application is equipped with a seed-drop monitoring sensor, which can monitor the seed-drop information in real time and provide accurate seed-drop information for the PLC controller.

[0026] 4. The film-breaking device of this application is controlled by a PLC controller according to seeding information, enabling precise film-breaking operations. Compared with the existing film-laying and hole-punching seeding machines that use a pure mechanical film-breaking device and can only punch holes evenly, there is a phenomenon that the seeds in the seed furrow are uneven due to vibration or other factors during the seeding process, ultimately resulting in the misalignment of the film holes and the seeds, affecting seed emergence, and requiring manual film-breaking again. The precise film-breaking technology of the present invention effectively solves this problem and reduces costs.

[0027] 5. The film-breaking device of this application is respectively provided with pressing wheels at the front and rear, which can compact the plastic film in the film-breaking area, facilitating the film-breaking knife to break the film, and effectively improving the film-breaking quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is an axonometric view of the film-laying and hole-punching seeding machine according to the embodiment of this application;

[0029] Figure 2 is a top view of the film-laying and hole-punching seeding machine according to the embodiment of this application;

[0030] Figure 3 is a schematic structural view of the seeding device in the embodiment of this application;

[0031] Figure 4 is a schematic structural view of the film-breaking device in the embodiment of this application;

[0032] In the figures, 1. Seeding device; 101. Seed box; 102. Seed chamber of the metering device; 103. Air chamber of the metering device; 104. Seed discharging port; 105. Seed guiding pipe; 106. Seed dropping monitoring sensor; 107. Fixed bolt hole; 2. Film-breaking device; 201. Front pressing wheel; 202. Fixed bolt hole of the film-breaking knife handle; 203. Film-breaking knife handle; 204. Electromagnetic clutch; 205. Film-breaking knife; 206. Connecting vertical rod; 207. Controller; 208. Rear pressing wheel; 209. Protection housing; 3. Soil covering disc; 4. Film hanging rod; 5. Ground wheel; 6. Furrow opener; 7. Pressing roller; 8. Frame assembly; 81. Vertical plate frame; 82. Horizontal plate frame; 83. Front section cross beam; 84. Rear section cross beam; 9. Transmission chain; 10. Ground wheel shaft; 11. Pressing wheel; 12. Soil covering wheel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] The following is a further detailed description of this application in conjunction with the attached Figure 1 - attached Figure 4 , to further elaborate on this application.

[0034] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

[0035] Embodiment: The present application proposes a high-speed film laying and hole punching seeding machine. Refer to Figures 1-4 , the device includes a frame assembly 8, a land leveling mechanism, a seeding device 1, a film covering mechanism, a film breaking device 2 and a control system. The frame assembly 8 serves as the overall support of the equipment and is used to connect to a towing machine. The land leveling mechanism, seeding device 1, film covering mechanism, and film breaking device 2 are sequentially arranged on the frame assembly 8 in the order from front to back. The land leveling mechanism is arranged at the front end of the seeding machine and is used to level the land. The seeding device 1 forms ridges, sows seeds, and backfills on the leveled land. The film covering mechanism is used to cover the film on the land after sowing to retain moisture and keep warm for the land. The film breaking device is used to break the film at the position where the seeds are dropped on the film to facilitate the germination of the seeds. The control system controls the automatic part of the seeding machine.

[0036] Refer to Figure 1 and 2 , the frame assembly 8 includes baffle structures arranged oppositely on both sides and a connecting structure connected between the baffle structures on both sides.

[0037] Exemplarily, the baffle structure is integrally L-shaped and is a metal plate structure formed by cutting. It includes a vertical plate frame 81 in the front section and a horizontal plate frame 82 in the rear section. The upper end of the vertical plate frame 81 is higher than the horizontal plate frame 82. The connecting structure includes a front cross beam 83 and a rear cross beam 84. There are two front cross beams 83, which are fixedly connected up and down between the two vertical plate frames 81. There is one rear cross beam 84, which is fixedly connected between the ends of the two horizontal plate frames 82. In this embodiment, the frame assembly 8 is connected to the towing machine through a three-point suspension structure distributed in a triangle. Among them, a suspension structure is arranged in the middle of the upper front cross beam 83, and a suspension structure is arranged at each position near the two ends of the lower suspension structure.

[0038] Exemplarily, the land leveling mechanism is connected to the lower front end of the vertical plate frame 81. In this embodiment, the land leveling mechanism is set as a pressing roller 7. Both ends of the pressing roller 7 are rotatably connected to the two vertical plate frames 81 through bearing seats. The pressing roller 7 is used to press and level the land so that the film can be smoothly laid on the ground surface, which is beneficial to film breaking.

[0039] Refer to Figure 2 and 3 , a seeding device 1 is arranged behind the land leveling mechanism. One or more groups of seeding devices 1 are arranged along the direction perpendicular to the traveling direction of the seeding machine. In this embodiment, two groups of seeding devices 1 are arranged. The seeding device includes a seed box 101, a pneumatic suction type seed metering device, and a seed guiding pipe 105. The seed box 101 is installed above the pneumatic suction type seed metering device. The seed guiding pipe 105 is connected below the pneumatic suction type seed metering device. The pneumatic suction type seed metering device is connected to the front cross beam 83 in the front through a connecting frame. Fixed bolt holes 107 for connecting to the connecting frame are arranged on the outer shell of the pneumatic suction type seed metering device. In this embodiment, a fertilizing device can also be added in front of the pneumatic suction type seed metering device.

[0040] In some embodiments, the air-suction type seed metering device includes a seed metering chamber 102 of the seed metering device, an air chamber 103 of the seed metering device, and a seed discharging opening 104; the seed metering chamber 102 of the seed metering device is communicated with the seed box 101, and the seed box 101 supplies materials to the seed metering chamber 102 of the seed metering device. The air chamber 103 of the seed metering device is connected to one side of the seed metering chamber 102 of the seed metering device to control the distribution of seeds in the seed metering chamber 102 of the seed metering device. The seed discharging opening 104 is arranged at the lower part of the seed metering chamber 102 of the seed metering device to discharge seeds outward. The seed guiding pipe 105 is connected below the seed discharging opening 104 to receive and guide the seeds to fall into the furrow.

[0041] A furrow opener 6 is installed directly in front of the seeding device 1. The furrow opener 6 is arranged behind the press roller 7 to open a furrow on the leveled land to facilitate fertilization and seeding. There are a press wheel 11 and a soil covering wheel 12 at the rear end of the seeding device 1. Among them, the press wheel 11 is arranged directly behind the outlet position of the seed guiding pipe 105 to press the scattered seeds into the soil. There are two soil covering wheels 12, which are relatively arranged at the rear positions on both sides of the press wheel 11 to cover the seeds with soil. The seeding device 1 is bolted to the support frames of the press wheel 11 and the soil covering wheel 12 through the fixing bolt holes 107 at the rear side of the air-suction type seed metering device.

[0042] A ground wheel shaft 10 is connected to the rear side of the seeding device 1. Both ends of the ground wheel shaft 10 are respectively connected to the cross plate frames 82 on both sides. A ground wheel 5 is arranged at each position near both ends of the ground wheel shaft 10, and the ground wheel 5 serves as a traveling wheel. A transmission gear is arranged on the ground wheel shaft 10, and a gear is also arranged on the central shaft of the air-suction type seed metering device. The gears are connected by a transmission chain 9, and the ground wheel shaft 10 provides power for the rotation of the air-suction type seed metering device.

[0043] Exemplarily, the film mulching mechanism includes a film hanging rod 4 and soil covering discs 3. Among them, both ends of the film hanging rod 4 are detachably connected to the two cross plate frames 82 by bolts. The film hanging rod 4 is used to place the film roll. During the walking of the seeding machine, the film roll rotates on the film hanging rod 4 to gradually lay the film on the ground. There are two soil covering discs 3, which are respectively connected to the outer sides of the ends of the two cross plate frames 82. After the film hanging rod 4 lays the film, the soil covering discs 3 push the soil on both sides of the film to backfill and press on the two side edges of the film to prevent the film from being blown up by the wind.

[0044] Referring to Figure 2 and 4 , the film breaking device 2 is arranged directly behind the seeding device 1, and the number is not less than that of the seeding device 1. In this embodiment, the seeding device 1 corresponds to the film breaking device 2 one by one, and the film breaking device 2 is installed on the rear cross beam 84.

[0045] Exemplarily, the film-breaking device 2 includes a protective housing 209, a film-pressing wheel, a connecting vertical rod 206, a film-breaking tool handle 203, and a film-breaking knife 205. The protective housing 209 has a rectangular structure and is fixedly connected to the rear cross beam 84 at the front end; the film-pressing wheel includes a front film-pressing wheel 201 and a rear film-pressing wheel 208. The front film-pressing wheel 201 and the rear film-pressing wheel 208 are respectively arranged at the front and rear ends of the lower surface of the protective housing 209, which can compact the plastic film to facilitate film breaking and also serve as the traveling support of the film-breaking device 2; a connecting vertical rod 206 is arranged one in front and one behind along the traveling direction of the film-breaking device 2, and the two connecting vertical rods 206 are arranged between the two film-pressing wheels. The two connecting vertical rods 206 are perpendicular to the lower surface of the protective housing 209; the film-breaking tool handle 203 is arranged in the front-rear direction, and the front end is fixedly connected to the bottom of the connecting vertical rod 206 at the front end of the protective housing 209. Both the end of the film-breaking tool handle 203 and the bottom of the connecting vertical rod 206 are provided with film-breaking tool handle fixing bolt holes. The rear end of the film-breaking tool handle 203 bends downward and is movably connected to the connecting vertical rod 206 at the rear end of the protective housing 209; the film-breaking knife 205 is fixedly arranged at the movable end of the film-breaking tool handle 203, that is, on the lower surface of the rear end of the film-breaking tool handle 203. The control system controls the lifting of the movable end of the film-breaking tool handle.

[0046] The control system includes a seed-drop monitoring sensor 106, an electromagnetic clutch 204, and a controller 207; the seed-drop monitoring sensor 106 is connected to the seed guide tube 105 to monitor the seed-drop information at the outlet of the seed guide tube 105; the electromagnetic clutch 204 includes two parts facing each other up and down, and the two parts can be adsorbed or separated by electromagnetic force. The two parts of the electromagnetic clutch 204 are respectively connected to the upper surface of the movable end of the film-breaking tool handle 203 and the lower end of the connecting vertical rod 206 opposite to the movable end of the film-breaking tool handle 203; the controller 207 uses a PLC controller and is fixedly connected to the rear connecting vertical rod 206. The controller 207 is electrically connected to the electromagnetic clutch 204 and the seed-drop monitoring sensor 106 respectively. The seed-drop monitoring sensor 106 monitors the seed-drop situation at the outlet of the seed guide tube 105 and sends an induction signal to the controller 207. The controller 207 receives and processes the induction signal. If seed dropping is found, a control signal is sent to the electromagnetic clutch 204. The electromagnetic clutch 204 is opened to release and lower the movable end of the film-breaking tool handle 203, and the film-breaking knife 205 touches the plastic film to break the film at the seed-dropping position.

[0047] The implementation principle of the embodiment of this application is as follows: The high-speed film-laying, hole-punching and seeding machine is towed by a tractor to perform film-laying and seeding operations in the mode of sowing under the film (that is, sowing first and then laying and breaking the film).

[0048] When the seeding machine is working, the press roller 7 compacts and levels the land to be sown, and then the furrow opener 6 opens a furrow.

[0049] When the ground wheel 5 of the seeder rotates, the seeding device 1 starts to work. Seeds fall into the furrow along the seed guiding tube 105, and the soil covering wheel 12 covers the soil on both sides of the furrow above the seeds. The soft soil is compacted by the pressing wheel 11. During the process of the seeds passing through the seed guiding tube 105, the seed dropping monitoring sensor 106 for monitoring the seed dropping information will monitor the seed dropping information in real time and transmit the seed dropping information to the PLC controller at the rear.

[0050] The plastic film is suspended behind the seeding device 1. After seeding, the plastic film is laid. The soil on both sides of the plastic film is pressed on the plastic film by the soil covering discs 3.

[0051] The pressing wheels before and after the film breaking device 2 compact the plastic film. The PLC controller makes calculations based on the seed dropping information transmitted by the seed dropping monitoring sensor 106 and controls the electromagnetic clutch 204 to work. When there is seed dropping information, the PLC controller calculates the opening and closing time of the electromagnetic clutch 204 according to the seed dropping height and the forward speed of the seeder. The electromagnetic clutch 204 is normally closed. When film breaking is required, the electromagnetic clutch 204 is opened, and the film breaking knife 205 drops under the action of the thrust of the film breaking knife handle 203 and gravity, sliding the plastic film to complete the film breaking. After the film breaking is completed, the electromagnetic clutch 204 is closed. Under the action of magnetic force, the film breaking knife 205 returns to its initial state, thus completing the entire film laying and seeding operation link.

[0052] The embodiments of this specific implementation manner are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. The same components are represented by the same reference numerals. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A high-speed film-laying and perforating seeder, characterized in that: The device includes: A frame assembly (8) is used to connect with the traction machine, comprising baffle structures arranged opposite to each other on two sides and a connecting structure connected between the baffle structures on the two sides; The leveling mechanism is used to level the land and is connected between the baffle structures on both sides; A sowing device (1), arranged behind the leveling mechanism and connected between the baffle structures on both sides, for sowing seeds; A film covering mechanism is arranged behind the sowing device (1) and connected between the baffle structures on both sides, and is used for covering the land with film after sowing; A film breaking device (2) is arranged behind the film covering mechanism and connected between the baffle structures on both sides, and is used for breaking the ground film; and The control system monitors the seed placement position of the sowing device (1) and controls the film breaking device (2) to break the film at the monitored seed placement position.

2. A high-speed film-laying and perforating seeder according to claim 1, characterized in that: The baffle structure comprises a front vertical plate frame (81) and a rear horizontal plate frame (82); the connection structure comprises a front crossbeam (83) connected between the two vertical plate frames (81) and a rear crossbeam (84) connected between the two horizontal plate frames (82); the front crossbeam (83) is provided with two upper and lower ones, and is connected to the traction machine through at least a three-point suspension structure.

3. A high-speed film-laying and perforating seeder according to claim 1, characterized in that: The leveling mechanism is provided as a pressing roller (7), and the two ends of the pressing roller (7) are rotatably connected to the baffle structures on both sides.

4. A high-speed film-laying and perforating seeder according to claim 1, characterized in that: The sowing device (1) is provided with one or more groups along a direction perpendicular to the travel direction of the seeder, and the sowing device (1) comprises a seed box (101), an air-suction seed metering device arranged at the bottom of the seed box (101), and a seed guide tube (105) arranged below the seed outlet of the air-suction seed metering device, and the control system comprises a seed drop monitoring sensor (106), and the seed drop monitoring sensor (106) is connected to the seed guide tube (105).

5. A high-speed film-laying and perforating seeder according to claim 4, characterized in that: The sowing device (1) is provided with a furrow opener (6) at the front end and a pressing wheel (11) and a covering wheel (12) at the rear end. The pressing wheel (11) is arranged directly behind the outlet of the seed guide tube (105), and two covering wheels (12) are arranged relatively behind the two sides of the pressing wheel (11).

6. A high-speed film-laying and perforating seeder according to claim 4, characterized in that: A ground wheel shaft (10) is connected between the baffle structures on both sides of the rear side of the sowing device (1), ground wheels (5) are arranged at both ends of the ground wheel shaft (10), a transmission gear is arranged on the ground wheel shaft (10), a transmission chain (9) is connected to the transmission gear, and the air suction seed metering device is connected to the transmission chain (9) through the gear.

7. The high-speed film-laying and perforating seeder according to claim 1, characterized in that: The film covering mechanism comprises a film hanging rod (4) and a soil covering disc (3); the film hanging rod (4) is detachably connected between the baffle structures on both sides; two soil covering discs (3) are provided and are respectively connected to the outer sides of the ends of the baffle structures on both sides.

8. The high-speed film-laying and perforating seeder according to claim 4, characterized in that: The film breaking device (2) comprises a protective shell (209), film pressing wheels arranged at the front and rear ends of the protective shell (209), two connecting vertical rods (206) connected to the front and rear opposite ends of the lower surface of the protective shell (209), a film breaking handle (203) connected between the lower ends of the two connecting vertical rods (206), and a film breaking knife (205) fixedly connected to the lower surface of one end of the film breaking handle (203); one end of the film breaking handle (203) is fixedly connected to one of the connecting vertical rods (206), and the other end is movably connected to the other connecting vertical rod (206); the film breaking knife (205) is arranged at the movable end of the film breaking handle (203), and the control system controls the lifting and lowering of the movable end of the film breaking handle (203).

9. A high-speed film-laying and perforating seeder according to claim 8, characterized in that: The control system further comprises an electromagnetic clutch (204) and a controller (207); the electromagnetic clutch (204) comprises two upper and lower parts which are opposite to each other and can be attracted or separated from each other, and the two parts of the electromagnetic clutch (204) are respectively connected to the upper part of the movable end of the film-breaking knife handle (203) and the lower end of the connecting vertical rod (206) which is opposite to the movable end of the film-breaking knife handle (203); the controller (207) is respectively electrically connected to the electromagnetic clutch (204) and the seed-falling monitoring sensor (106); the seed-falling monitoring sensor (106) monitors the seed-falling situation and sends a sensing signal to the controller (207); the controller (207) receives and processes the sensing signal, and sends a control signal to the electromagnetic clutch (204) if the seed-falling is found, and the electromagnetic clutch (204) is opened to make the movable end of the film-breaking knife handle (203) fall, and the film-breaking knife (205) breaks the film at the seed-falling position.

10. The high-speed film-laying and perforating seeder according to claim 1, characterized in that: The film breaking devices (2) are arranged directly behind the sowing devices (1), and the number of the film breaking devices (2) is not less than the number of the sowing devices (1).

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