Method for transplanting flue-cured tobacco seedlings through a break in the film

Abstract

The application discloses a flue-cured tobacco seedling film-underbreakage transplanting method, which comprises the following steps: S1, determining a seedling time and carrying out seedling; S2, land preparation; S3, pond setting, wherein the setting is realized after ponding and ridging; S4, carrying out insect prevention treatment, wherein the treatment is realized by spraying nicotine emulsifiable concentrate or lambda-cyhalothrin emulsifiable concentrate on the tobacco pond and tobacco ridge to prevent and control underground pests; and S5, fertilizing the tobacco pond and carrying out film covering treatment after fertilization. The application relates to the technical field of flue-cured tobacco seedling transplanting, in particular to a flue-cured tobacco seedling film-underbreakage transplanting method. The film opening assembly composed of a first electric push rod, a linear track, a second electric push rod, a swing rod and an opening piece can automatically and accurately open the black film. In the seedling falling assembly, the first limiting plate, the second limiting plate, the soil turning plate, the seedling guiding plate and the guide plate work cooperatively to accurately guide the flue-cured tobacco seedlings from the seedling tray to the soil.

Description

Technical Field

[0001] This invention relates to the field of tobacco seedling transplanting technology, and more specifically, to a method for transplanting tobacco seedlings through a mulch film. Background Technology

[0002] Transplanting is a crucial step in flue-cured tobacco cultivation. Traditional transplanting methods have many problems. For seedling transplanting, the under-film seedling transplanting technique is a highly efficient and precise agricultural planting technique that combines modern agricultural technology with traditional planting experience. By precisely controlling the environmental conditions and operational steps during the transplanting process, it ensures the survival rate of transplanted seedlings, promotes their rapid growth, and ultimately achieves the goal of high yield and high efficiency.

[0003] For manual film-covered transplanting techniques, the process is inefficient and the quality of the openings is inconsistent, affecting the black film's effectiveness in retaining soil heat, moisture, and preventing weeds. Furthermore, manual transplanting of tobacco seedlings is labor-intensive and makes it difficult to ensure consistent transplanting depth and spacing, which is detrimental to later growth and field management. A technology that can mechanically open openings in the film and transplant seedlings into the soil beneath would significantly increase the speed of film-covered transplanting. Summary of the Invention

[0004] This invention provides a method for transplanting flue-cured tobacco seedlings under plastic film. The invention uses a film opening assembly consisting of a first electric push rod, a linear track, a second electric push rod, a swing rod, and an opening component to automatically and accurately open the black film. In the seedling placement assembly, a first limiting plate, a second limiting plate, a soil-pulling plate, a seedling guide plate, and a guide plate work together to accurately guide the flue-cured tobacco seedlings from the seedling tray into the soil.

[0005] The method for transplanting tobacco seedlings under plastic film includes the following steps:

[0006] S1: Determine the seedling time and carry out seedling cultivation;

[0007] S2: Adjust soil moisture;

[0008] S3: Digging ponds, digging ponds after ridging to set up tobacco ponds;

[0009] S4: Insect control treatment is carried out by spraying tobacco ponds and tobacco rows with nicotine emulsifiable concentrate or high-efficiency cyhalothrin emulsifiable concentrate to control underground pests.

[0010] S5: Fertilize the tobacco pond, and then cover the tobacco pond with a film after fertilization;

[0011] S6: Select suitable tobacco seedlings and place them on the seedling placement tray of the integrated film-breaking and transplanting machine. Use the film opening component of the integrated film-breaking and transplanting machine to break the black film. Use the seedling dropping component of the integrated film-breaking and transplanting machine to transplant the tobacco seedlings. The film opening component can break the black film, and the seedling dropping component can transplant the seedlings in the seedling tray placement trough into the soil at the broken opening in the tobacco pond.

[0012] S7: Install drip irrigation promptly after transplanting and water the plants using drip irrigation.

[0013] Furthermore, in S6, the integrated transplanting machine includes a support frame, a film opening assembly, a seedling placement assembly, and a seedling tray placement trough. The seedling placement tray is installed on the support frame, and both the film opening assembly and the seedling placement assembly are installed on the support frame. The support frame is equipped with a controller and a driver's cab, and the controller is used to control the film opening assembly and the seedling placement assembly.

[0014] Furthermore, the bracket is installed on the vehicle body. The bracket consists of a support cavity, a feeding channel, a seedling tray placement slot, a connecting frame, and a base. One end of each side of the support cavity is fixedly connected to the feeding channel via the connecting frame. The seedling tray placement slot is fixedly provided on the upper side of the feeding channel. The lower side of the inside of the feeding channel is a sloping surface. The lower end of the feeding channel is fixedly connected to the base, which is L-shaped. The other end of the support cavity is connected to the membrane opening assembly. The seedling dropping assembly is provided inside the support cavity. The seedling dropping assembly is connected to a driving component, which is used to drive the seedling dropping assembly to work.

[0015] Further, the membrane opening assembly includes a fixed plate, a first electric push rod, a linear track, a fixed block, a second electric push rod, a straight groove rod, a swing rod, an opening component, a gas spring, and a pressure plate. The fixed plate is fixed to the upper side of the other end of the support cavity. The first electric push rod is fixedly disposed on the lower side of the fixed plate. The telescopic rod of the first electric push rod is fixedly connected to the movable end of the linear track. The fixed end of the linear track is fixedly connected to the support cavity. The movable end of the linear track is fixedly connected to the fixed block. The lower end of the fixed block is rotatably connected to the upper end of the vertical rods fixed at both ends of the upper side of the opening component. The opening component is semi-conical. The upper end of one of the vertical rods is fixedly connected to the swing rod. At one end, the angle between the swing rod and the vertical rod is - degrees. The upper end of the swing rod is fixedly connected to a convex shaft, which is set in the groove of the straight groove rod. The convex shaft matches the straight groove rod. The upper side of the straight groove rod is fixedly connected to the telescopic rod of the second electric push rod. The second electric push rod is fixed to one side of the fixed block. One end of the gas spring is fixedly set on the lower side of the fixed block. The other end of the gas spring is fixedly set to the pressure plate. The pressure plate is higher than the opening piece. The lower end of the opening piece is sharp. After the pressure plate presses down on the black film, the lower end of the opening piece can be inserted into the black film. Under the drive of the telescopic rod of the second electric push rod, the swing rod swings to open the black film.

[0016] Furthermore, the seedling placement assembly includes fixed tracks, a first limiting plate, a second limiting plate, a soil-dispensing plate, a rotating shaft, a seedling guide platform, limiting plates, support columns, springs, and guide plates. The fixed tracks are fixedly installed on the middle portions of both sides of the support cavity. Each fixed track has two ends of a circular shaft fixed to one end of the first limiting plate slidably installed within it. The second limiting plate is fixedly installed at the other end of the first limiting plate. The second limiting plate is an arc-shaped plate with its tail end facing the soil-dispensing plate. The upper end of the soil-dispensing plate is fixedly connected to the rotating shaft, which rotatably connects to the support cavity. Connecting rods are rotatably connected to the middle portions of both sides of the soil-dispensing plate. The other ends of the connecting rods are rotatably connected to the lower middle portions of both sides of the first limiting plate. The rotating shaft is fixedly connected to the seedling guide plate, which is inclined. The angle between the seedling guide plate and the soil-dispensing plate is [degrees]. The lower middle portion of the soil-dispensing plate is triangular to facilitate insertion into the soil. A base is fixedly installed on the lower side of the feeding channel. The base is L-shaped. The vertical plate of the base fixes the feeding channel. A seedling guide platform is installed on the horizontal plate of the base. The seedling guide platform is L-shaped and its vertical plate can abut against the horizontal plate of the base. A symmetrical guide member is fixedly installed on the lower side of the horizontal plate of the seedling guide platform. The fixed end of the guide member is fixed on the horizontal plate of the base. A square opening is provided in the middle of the horizontal plate of the seedling guide platform, and one end of the guide plate is rotatably connected in the opening. A guide plate tail plate is fixedly installed on the other end of the guide plate. The guide plate tail plate is inclined and can abut against the lower side of the outer end of the seedling guide plate. The lower parts of the two sides of the other end of the guide plate are respectively fixedly connected to the lower side of the horizontal plate of the seedling guide platform by the spring. The upper parts of the two sides of the horizontal plate of the seedling guide platform are respectively connected to the second limiting plate by the support column. A notch is opened at the upper end of the support column, and a sliding shaft is fixedly installed in the notch.

[0017] The round shaft fixed to the end of the second limiting plate is fixedly connected to both ends of the U-shaped fixing rod. The U-shaped fixing rod and the second limiting plate are arranged in a straight line. Limiting grooves are respectively opened at the upper ends of both sides of the U-shaped fixing rod. The sliding shaft is provided in the limiting groove and the limiting groove matches the sliding shaft. The two sides of the U-shaped fixing rod are respectively rotatably connected to the two ends of the auxiliary conveying shaft. The auxiliary conveying shaft is located in the area between the round shaft and the limiting groove.

[0018] Furthermore, the circular shaft is connected to the driving component, which includes a slot, a moving block, a connecting shaft, and a first cylinder. The connecting shaft is fixedly installed at one end of the circular shaft. The slot is opened on one side of the supporting cavity corresponding to the connecting shaft. The connecting shaft passes through the slot. One end of the connecting shaft is fixedly connected to the piston rod of the first cylinder. The outer shell of the first cylinder is fixed to the outside of the supporting cavity.

[0019] Furthermore, seedling-gathering boards are fixedly installed on both sides of the lower middle part of the soil-removing board, which are used to guide the tobacco seedlings and gather their leaves.

[0020] Furthermore, the base is also equipped with a baffle assembly, which includes a seedling baffle and a third electric push rod. The seedling baffle is fixed to the upper end of the telescopic rod of the third electric push rod, and the third electric push rod is fixed to the horizontal plate of the base. A square channel is opened on the vertical plate of the seedling guide platform, and the baffle assembly is set in the square channel. The third electric push rod can drive the seedling baffle to rise and fall to block the end of the feeding channel. A vision sensor is embedded on the upper side of the seedling baffle.

[0021] Furthermore, the controller controls the first electric push rod, the second electric push rod, the third electric push rod, and the first cylinder. The vision sensor transmits data with the controller. The vision sensor is used to monitor whether there are tobacco seedlings passing by. When the vision sensor on the upper side of the seedling baffle detects that tobacco seedlings have passed by, the third electric push rod will control the seedling baffle to move up and block the lower end of the feeding channel to prevent the next tobacco seedling from passing by.

[0022] Compared with the prior art, the advantages and positive effects of the present invention are:

[0023] 1. By working backward from the transplanting period and seedling age to determine the sowing time, the seedling raising time can be accurately determined, avoiding quality damage to tobacco seedlings due to missing the optimal planting period. This lays a good foundation for subsequent growth. The requirements for deep plowing, high ridging, long fields with short ridges, and smooth irrigation and drainage create an excellent soil environment for flue-cured tobacco growth, enhancing soil aeration and permeability, improving physical and chemical properties, and facilitating root development and nutrient and water absorption. Clearly defined planting hole specifications ensure that the leaves maintain a suitable distance from the mulch film after transplanting, guaranteeing normal growth of tobacco seedlings under different groundwater levels. Reasonable irrigation, pest control, fertilization, and mulching provide suitable moisture for tobacco seedling growth, reduce pest threats, ensure effective fertilizer utilization, and maintain the water and heat retention effects of the mulch film.

[0024] 2. The film opening assembly, composed of a first electric push rod, a linear track, a second electric push rod, a swing rod, and an opening component, can automatically and accurately open the black film. Compared with manual opening, this greatly improves opening efficiency, and the regular shape of the opening is beneficial for the black film to maintain and regulate the soil environment during the later growth of tobacco seedlings. In the seedling placement assembly, the first limiting plate, the second limiting plate, the soil-pulling plate, the seedling guide plate, and the guide plate work together to accurately guide the flue-cured tobacco seedlings from the seedling tray into the soil. The arc design of the second limiting plate plays a good guiding and limiting role for the tobacco seedlings, preventing them from falling. The soil-pulling plate loosens the soil before transplanting, creating a suitable space for the seedlings to enter the soil, ensuring the accuracy of the transplanting depth and position, and improving the survival rate of the seedlings. The controller is connected to the first electric push rod, the second electric push rod, the third electric push rod, and the first cylinder, and combined with data feedback from the vision sensor, realizes the automation and intelligence of the entire transplanting process. For example, after the visual sensor detects the passing of tobacco seedlings, it can automatically control the seedling baffle to block the feeding channel and prevent subsequent seedlings from accidentally entering; the auxiliary conveyor shaft assists in the conveying of the flue-cured tobacco seedlings, making the seedlings move more smoothly during the transplanting process, and further improving the transplanting efficiency and quality.

[0025] 3. Applying specific pesticides for root irrigation after transplanting can effectively prevent and control pests and diseases, ensure the healthy growth of tobacco seedlings, and improve the yield and quality of flue-cured tobacco. Attached Figure Description

[0026] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. Obviously, the drawings described below are merely some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0027] Figure 1 This is a partial three-dimensional representation of the present invention. Figure 1 ;

[0028] Figure 2 This is a partial three-dimensional representation of the present invention. Figure 2 ;

[0029] Figure 3 This is a partial three-dimensional representation of the present invention. Figure 3 ;

[0030] Figure 4 This is a partial side view of the present invention;

[0031] Figure 5 This is a partial three-dimensional representation of the present invention. Figure 4 ;

[0032] Figure 6This is a perspective view of the present invention;

[0033] Figure 7 This is a partial three-dimensional representation of the present invention. Figure 5 ;

[0034] Figure 8 For the present invention Figure 7 A magnified view of a portion of point A in the middle.

[0035] In the diagram: 1. Bracket; 101. Support cavity; 102. Feeding channel; 103. Seedling tray placement slot; 194. Connecting frame; 105. Base; 2. Driving component; 201. Grooving; 202. Moving block; 203. Connecting shaft; 204. First cylinder; 3. Membrane opening assembly; 301. Fixing plate; 302. First electric push rod; 303. Linear track; 304. Fixing block; 305. Second electric push rod; 306. Straight groove rod; 307. Swing rod; 308. Opening component; 3081. Vertical rod; 309. Gas spring; 3091. Pressure plate; 4. Seedling dropping assembly; 401 402. Fixed track; 402. First limiting plate; 4021. Round shaft; 4022. U-shaped fixing rod; 4023. Auxiliary conveying shaft; 4024. Limiting chute; 403. Second limiting plate; 404. Soil-pulling plate; 4041. Connecting rod; 4042. Seedling-gathering plate; 405. Rotating shaft; 4051. Seedling guide plate; 406. Seedling guide platform; 4061. Guide component; 407. Limiting plate; 408. Support column; 409. Spring; 4010. Guide plate; 4011. Guide plate tail plate; 5. Baffle assembly; 501. Seedling baffle; 502. Third electric push rod; 6. Water tank; 8. Vehicle body. Detailed Implementation

[0036] The following is in conjunction with the appendix Figures 1-8 The present invention will be further described in conjunction with the embodiments.

[0037] The specific embodiments of the present invention are as follows:

[0038] The method for transplanting tobacco seedlings under plastic film includes the following steps:

[0039] S1: Determine the seedling time and carry out seedling cultivation;

[0040] Once the tobacco seedlings enter the large cross stage, timely increase light and ventilation to harden them off early; the seedling raising time should be calculated by working backward from the transplanting period and the seedling age of 35-45 days.

[0041] Furthermore, since light and heat conditions and transplanting periods vary from place to place, the timing must be determined according to local conditions. For example, in Xiangyun County, if transplanting is done on May 1st, the seedlings will be about 40 days old, and the sowing time will be around March 20th. It is essential to accurately calculate the sowing period to avoid the tobacco seedlings becoming weak or unusable due to missing the optimal planting time.

[0042] S2: Adjust soil moisture;

[0043] Land preparation involves turning over the soil to loosen it, break up the plow pan, enhance aeration and water permeability, improve its physical and chemical properties, and create space for crop roots to grow, facilitating root development and absorption of nutrients and water. Mulching involves further processing the turned-over land to break up the soil, level it, and plan the shape, width, height, and spacing of suitable ridges (soil moisture levels suitable for crop growth) according to planting requirements. This ensures smooth irrigation and drainage, even water distribution, and facilitates crop sowing, transplanting, and growth. Mulching requires deep plowing and high ridging, long fields with short ridges, and smooth irrigation and drainage to create a favorable soil environment for flue-cured tobacco growth. Because transplanting seedlings under plastic film has water-retaining and heat-insulating effects, the transplanting period can be appropriately advanced, and the mulching time should also be brought forward. If land preparation cannot be advanced due to the influence of winter crops, it can be carried out according to the normal season.

[0044] S3: Digging ponds, digging ponds after ridging to set up tobacco ponds;

[0045] "Drilling pits" is an agricultural term referring to the process of creating small holes in the field according to specific specifications and requirements after the land has been prepared and ridges have been erected. These pits are used for agricultural operations such as transplanting crop seedlings, sowing, or fertilizing. In the technique of transplanting flue-cured tobacco seedlings under plastic film, the pit depth should be 12-15 cm and the horizontal diameter should be 20-23 cm to ensure that the leaves are at least 7 cm away from the plastic film after transplanting. In tobacco fields with high groundwater levels, the pit depth can be reduced to 10-12 cm to prevent seedlings from dying at the base of the pit.

[0046] S4: Insect control treatment is carried out by spraying tobacco ponds and tobacco rows with nicotine emulsifiable concentrate or high-efficiency cyhalothrin emulsifiable concentrate to control underground pests.

[0047] The concentration of the nicotine emulsifiable concentrate is: 10% nicotine emulsifiable concentrate at 800 times dilution; the concentration of the high-efficiency cyhalothrin emulsifiable concentrate is: 25 g / L high-efficiency cyhalothrin emulsifiable concentrate at 2500 times dilution.

[0048] S5: Fertilize the tobacco pond, and then cover the tobacco pond with a film after fertilization;

[0049] One of the methods is to apply 50 kg of compound fertilizer (1 / 3 of the base fertilizer) per mu, and then cover the fertilizer and the surface of the pond with well-rotted farmyard manure or fine soil to prevent fertilizer volatilization and retain moisture.

[0050] When covering the mulch, choose a black mulch film with a light transmittance of 30%-40% and a thickness of 0.8-1μm. Before covering the mulch, prepare the soil on the ridge surface. When covering the mulch, press the soil firmly on both sides to prevent the film from tearing or lifting.

[0051] S6: Select suitable tobacco seedlings and place them on the seedling placement tray of the integrated transplanting and breaking machine. Use the film opening component 3 of the integrated transplanting and breaking machine to break the black film, and use the seedling dropping component 4 of the integrated transplanting and breaking machine to transplant the tobacco seedlings. The film opening component 3 can break the black film, and the seedling dropping component 4 can transplant the seedlings in the seedling placement tray into the soil at the broken opening in the tobacco pond.

[0052] The tobacco seedlings should be selected from seedlings that are 35-45 days old, have 4-5 leaves (4 leaves and 1 bud to 5 leaves and 1 bud), are 5-6 cm tall, are sturdy and strong, have bright green leaves, well-developed root system, are clean and free from diseases and pests, and have not been pruned.

[0053] Choose a suitable location and depth for transplanting based on the seedling's growth and soil conditions, ensuring the roots penetrate the mulch and enter the soil. Water lightly after planting to ensure close contact between the soil and roots.

[0054] S7: After transplanting, promptly lay drip irrigation and water each planting hole with 1.5 kg of water.

[0055] In S6, the integrated transplanting machine includes a support frame 1, a film opening assembly 3, a seedling placement assembly 4, and a seedling tray placement trough 103. Seedling trays are placed in the seedling tray placement trough 103. The tobacco seedling placement trays are installed on the support frame 1. The film opening assembly 3 and the seedling placement assembly 4 are both installed on the support frame 1. The support frame 1 is equipped with a controller and a driver's cab. The controller is used to control the film opening assembly 3 and the seedling placement assembly 4.

[0056] The bracket 1 is mounted on the vehicle body 8. The bracket 1 consists of a support cavity 101, a feeding channel 102, a seedling tray placement slot 103, a connecting frame 194, and a base 105. One end of each side of the support cavity 101 is fixedly connected to the feeding channel 102 through the connecting frame 194. The seedling tray placement slot 103 is fixedly installed on the upper side of the feeding channel 102. The lower side of the inside of the feeding channel 102 is a sloping surface. The lower end of the feeding channel 102 is fixedly connected to the base 105. The base 105 is L-shaped. The other end of the support cavity 101 is connected to the membrane opening assembly 3. The seedling dropping assembly 4 is installed inside the support cavity 101. The seedling dropping assembly 4 is connected to the driving component 2. The driving component 2 is used to drive the seedling dropping assembly 4 to work.

[0057] The membrane opening assembly 3 includes a fixed plate 301, a first electric push rod 302, a linear track 303, a fixed block 304, a second electric push rod 305, a straight groove rod 306, a swing rod 307, an opening member 308, a gas spring 309, and a pressure plate 3091. The fixed plate 301 is fixed to the upper side of the other end of the support cavity 101. The first electric push rod 302 is fixedly installed on the lower side of the fixed plate 301. The telescopic rod of the first electric push rod 302 is fixedly connected to the movable end of the linear track 303. The fixed end of the linear track 303 is fixedly connected to the support cavity 101. The movable end of the linear track 303 is fixedly connected to the fixed block 304. The lower end of the fixed block 304 is rotatably connected to the upper end of the vertical rod 3081 fixed at both ends of the upper side of the opening member 308. The opening member 308 is semi-conical. The upper end of one of the vertical rods 3081 is fixedly connected to the swing rod. One end of the rod 307 has an angle of 150-160 degrees between the swing rod 307 and the vertical rod 3081. The upper end of the swing rod 307 is fixedly connected to a convex shaft, which is set in the groove of the straight groove rod 306. The convex shaft matches the straight groove rod 306. The upper side of the straight groove rod 306 is fixedly connected to the telescopic rod of the second electric push rod 305. The second electric push rod 305 is fixed to one side of the fixed block 304. One end of the gas spring 309 is fixedly set on the lower side of the fixed block 304. The other end of the gas spring 309 is fixedly set to the pressure plate 3091. The pressure plate 3091 is higher than the opening member 308. The lower end of the opening member 308 is sharp. After the pressure plate 3091 presses down on the black film, the lower end of the opening member 308 can be inserted into the black film. Under the drive of the telescopic rod of the second electric push rod 305, the swing rod swings to open the black film.

[0058] In this embodiment, the fixing plate 301 is fixed to the support cavity 101. The first electric push rod 302 is activated, and its telescopic rod drives the movable end of the linear track 303 to move, thereby moving the fixing block 304. The fixing block 304 drives the opening piece 308 to move above the black film. The gas spring 309 causes the pressure plate 3091 to press down on the black film first. Then, the opening piece 308 continues to move downward under the action of the fixing block 304, and its sharp lower end inserts into the black film. Next, the second electric push rod 305 is activated, and its telescopic rod drives the straight groove rod 306 to move. The straight groove rod 306 drives the swing rod 307 to swing through the convex shaft, thereby causing the opening piece 308 to swing and open the black film.

[0059] In this embodiment, there can be multiple supports 1, thus providing multiple sets of seedling drop components 4 and film opening components 3, which can process multiple rows of tobacco seedlings. In the figure, the front of the vehicle body 8 and the driver's cab have been omitted, as they are existing technologies.

[0060] The seedling placement assembly 4 includes a fixed track 401, a first limiting plate 402, a second limiting plate 403, a soil-lifting plate 404, a rotating shaft 405, a seedling guiding platform 406, a limiting plate 407, a support column 408, a spring 409, and a guide plate 4010. The fixed track 401 is fixedly installed on the middle of both sides of the support cavity 101. Each fixed track 401 has two ends of a circular shaft 4021 fixed to one end of the first limiting plate 402 that are slidably installed within it. The other end of the first limiting plate 402 is fixedly installed with the second limiting plate 403, which is an arc shape. The soil-removing plate 404 is shaped with its tail end facing the soil-removing plate 404. The upper end of the soil-removing plate 404 is fixedly connected to the rotating shaft 405. The rotating shaft 405 is rotatably connected to the support cavity 101. The middle parts of both sides of the soil-removing plate 404 are respectively rotatably connected to the connecting rods 4041. The other ends of the connecting rods 4041 are respectively rotatably connected to the lower middle parts of both sides of the first limiting plate 402. The rotating shaft 405 is fixedly connected to the seedling guide plate 4051. The seedling guide plate 4051 is inclined and the included angle between the seedling guide plate 4051 and the soil-removing plate 404 is 160 degrees. The lower middle part of the soil-removing plate 404 is triangular. To facilitate insertion into the soil, a base 105 is fixedly installed on the lower side of the feeding channel 102. The base 105 is L-shaped, and the vertical plate of the base 105 fixes the feeding channel 102. A seedling guide platform 406 is installed on the horizontal plate of the base 105. The seedling guide platform 406 is L-shaped, and its vertical plate can abut against the horizontal plate of the base 105. The lower side of the horizontal plate of the seedling guide platform 406 has the movable end of a symmetrical guide member 4061, and the fixed end of the guide member 4061 is fixed to the horizontal plate of the base 105. A square [unclear] is provided in the middle of the horizontal plate of the seedling guide platform 406. The guide plate 4010 is rotatably connected to one end of the open end. The other end of the guide plate 4010 is fixedly provided with a guide plate tail plate 4011. The guide plate tail plate 4011 is inclined and can abut against the lower side of the outer end of the seedling guide plate 4051. The lower parts of the two sides of the other end of the guide plate 4010 are respectively fixedly connected to the lower side of the horizontal plate of the seedling guide platform 406 by the spring 409. The upper parts of the two sides of the horizontal plate of the seedling guide platform 406 are respectively connected to the second limiting plate 403 by the support column 408. The upper end of the support column 408 is provided with a notch and a sliding shaft is fixedly provided in the notch.

[0061] The round shaft 4021 fixed to the end of the second limiting plate 403 is fixedly connected to both ends of the U-shaped fixing rod 4022. The U-shaped fixing rod 4022 and the second limiting plate 403 are arranged in a straight line. Limiting grooves 4024 are respectively opened at the upper ends of both sides of the U-shaped fixing rod 4022. The sliding shaft is provided in the limiting groove 4024 and the limiting groove 4024 matches the sliding shaft. The two sides of the U-shaped fixing rod 4022 are respectively rotatably connected to the two ends of the auxiliary conveying shaft 4023. The auxiliary conveying shaft 4023 is located in the area between the round shaft 4021 and the limiting groove 4024.

[0062] In this embodiment, in the initial state, the piston rod of the first cylinder 204 is in the extended state, at which time the first limiting plate 402, the second limiting plate 403, and the soil-removing plate 404 are in the... Figure 5 In the state shown, driven by the connecting rod 4041, the soil-pulling plate 404 approaches the lower end of the second limiting plate 403, and the lower side of the outer end of the seedling guide plate 4051 abuts against the guide plate tail plate 4011. The seedling guide plate 4051, which is rotatably connected to the seedling guide platform 406, is connected to the seedling guide platform 406 by the spring 409. The guide plate 4010 swings downward and is in an inclined state. The spring 409 undergoes elastic deformation, aligning the roots of the flue-cured tobacco seedlings in the seedling tray with the direction of the seedling guide plate 4051. The tobacco seedlings are placed in the feed channel 102 and slide down the slope onto the seedling guide platform 406. The first cylinder 204 drives the connecting shaft 203 and the round shaft 4021 to move. The round shaft 4021 moves within the fixed track 401, driving the first limiting plate 402 to move. The first limiting plate 402 then drives the second limiting plate 403 to move. The bottom of the second limiting plate 403 is slightly inclined downwards, and its arc shape guides the tobacco seedlings. The limiting plate 402 prevents the tobacco seedlings from falling outside. Guided by the guide plate 4051 of the seedling guide platform 406, the tobacco seedlings move to the guide plate 4010. The tobacco seedlings on the guide plate 4010 move with the guide plate 4010. The movement of the first limiting plate 402 can drive the connecting rod 4041 to swing. The connecting rod 4041 drives the soil-removing plate 404 to swing downward. During the downward swing, the soil-removing plate 404 inserts and removes the soil, leaving space for the tobacco seedlings to fall in. The swing of the soil-removing plate 404 drives the rotating shaft 405 to rotate. The rotating shaft 405 drives the outer end of the guide plate 4010 to swing upward. The tobacco seedlings slide down as the guide plate 4010 is lifted and move along the channel between the lower side of the auxiliary conveying shaft 4023 and the soil-removing plate 404. The auxiliary conveying shaft 4023 rotates to assist the movement when the tobacco seedlings move. The tobacco seedlings will slide down along the soil-removing plate 404 and enter the soil pit removed by the soil-removing plate 404.

[0063] A limiting plate 407 is fixedly installed on the upper side of the horizontal plate of the seedling guide platform 406. The limiting plates 407 are symmetrically arranged to facilitate the limiting of the tobacco seedlings and enable them to move through the seedling guide platform 406.

[0064] In this embodiment, the seedling tray in the feeding channel 102 transports the flue-cured tobacco seedlings to the seedling guiding platform 406. The seedling guiding platform 406 can move up and down under the action of the guide member 4061, and the auxiliary conveying shaft 4023 assists in conveying the flue-cured tobacco seedlings. The first cylinder 204 in the driving member 2 is activated, and the piston rod drives the connecting shaft 203 to move. The connecting shaft 203 drives the round shaft 4021 to move, and the round shaft 4021 drives the first limiting plate 402 and the second limiting plate 403 to slide within the fixed track 401. The first limiting plate 402 drives the soil-moving plate 404 to rotate around the rotating shaft 405 via the connecting rod 4041. The soil-moving plate 404 inserts into the soil and moves the soil to one side to remove the soil, facilitating the transplanting of tobacco seedlings. The second limiting plate 403 is arc-shaped and can guide and limit the tobacco seedlings to prevent them from falling out. The tobacco seedlings slide down the guide plate 4051 and the guide plate 4010 into the soil, completing the transplanting process. In the initial state, the piston rod of the first cylinder 204 is in the extended state. At this time, the first limiting plate 402, the second limiting plate 403, and the soil-moving plate 404 are in the extended state. Figure 5In the state shown, the soil-removing plate 404 is not in contact with the upper side of the film. Driven by the connecting rod 4041, the soil-removing plate 404 approaches the lower end of the second limiting plate 403. The lower side of the outer end of the seedling guide plate 4051 abuts against the guide plate tail plate 4011. The seedling guide plate 4051, which is rotatably connected to the seedling guide platform 406, is connected to the seedling guide platform 406 by the spring 409. The guide plate 4010 swings downward and is in an inclined state. The spring 409 undergoes elastic deformation, which aligns the roots of the flue-cured tobacco seedlings in the seedling tray with the soil. The tobacco seedlings are placed in the direction indicated by the guide plate 4051. They slide down the slope of the feed channel 102 onto the guide platform 406. The first cylinder 204 drives the connecting shaft 203 and the round shaft 4021 to move. The round shaft 4021 moves within the fixed track 401, driving the first limiting plate 402 to move. The first limiting plate 402 then drives the second limiting plate 403 to move. The bottom of the second limiting plate 403 is slightly inclined downwards, and its arc shape allows for... The tobacco seedlings serve to guide and limit their movement, preventing them from falling outside. Guided by the guide plate 4051 on the seedling guide platform 406, the seedlings move onto the guide plate 4010. The seedlings on the guide plate 4010 follow the guide plate 4010. The movement of the first limiting plate 402 causes the connecting rod 4041 to swing. The connecting rod 4041 causes the soil-removing plate 404 to swing downward. During the downward swing, the soil-removing plate 404 inserts and removes the soil, leaving space for the tobacco seedlings to fall in. The swing of the soil-removing plate 404 also causes the rotating shaft 405 to rotate. The rotating shaft 405 causes the outer end of the guide plate 4010 to swing upward. As the guide plate 4010 is lifted, the tobacco seedlings slide down and move along the channel between the lower side of the auxiliary conveying shaft 4023 and the soil-removing plate 404. The auxiliary conveying shaft 4023 rotates to assist the movement of the tobacco seedlings. The tobacco seedlings will slide down along the soil-removing plate 404 and enter the pit removed by the soil-removing plate 404.

[0065] The circular shaft 4021 is connected to the driving component 2. The driving component 2 includes a slot 201, a moving block 202, a connecting shaft 203, and a first cylinder 204. The connecting shaft 203 is fixedly provided at one end of the circular shaft 4021. The slot 201 is provided on one side of the supporting cavity 101 corresponding to the connecting shaft 203. The connecting shaft 203 passes through the slot 201. One end of the connecting shaft 203 is fixedly connected to the piston rod of the first cylinder 204. The outer shell of the first cylinder 204 is fixed to the outside of the supporting cavity 101.

[0066] The lower middle part of the soil-removing plate 404 is also fixedly provided with seedling-gathering plates 4042 on both sides, which are used to guide the flue-cured tobacco seedlings and gather their leaves.

[0067] The base 105 is also provided with a baffle assembly 5, which includes a seedling baffle 501 and a third electric push rod 502. The seedling baffle 501 is fixed to the upper end of the telescopic rod of the third electric push rod 502. The third electric push rod 502 is fixed to the horizontal plate of the base 105. A square channel is opened on the vertical plate of the seedling guide platform 406. The baffle assembly 5 is set in the square channel. The third electric push rod 502 can drive the seedling baffle 501 to rise and fall to block the end of the feeding channel 102. A vision sensor is embedded on the upper side of the seedling baffle 501.

[0068] The controller controls the first electric push rod 302, the second electric push rod 305, the third electric push rod 502 and the first cylinder 204. The vision sensor transmits data with the controller. The vision sensor is used to monitor whether there are tobacco seedlings passing by. When the vision sensor on the upper side of the seedling baffle 501 detects that there are tobacco seedlings passing by, the third electric push rod 502 will control the seedling baffle 501 to move up to block the lower end of the feeding channel 102 to prevent the next tobacco seedling from passing by.

[0069] In this embodiment, a baffle assembly 5 is provided. A vision sensor is provided on the upper side of the seedling baffle 501. When the vision sensor on the upper side of the seedling baffle 501 detects that a tobacco seedling has passed by, the third electric push rod 502 will control the seedling baffle 501 to move upward to block the lower end of the feeding channel 102, preventing the next tobacco seedling from passing by. After one soil-removing action is completed and the piston rod of the first cylinder 204 has completed its extension action, driving the second limit plate 403 and the soil-removing plate 404 back to their initial positions, the baffle assembly 5 drives the seedling baffle 501 to move downward back to its original position, no longer blocking the feeding channel 102, so as to facilitate the next seedling placement operation.

[0070] The working process of this invention is as follows:

[0071] First, based on local light and heat conditions and the planned transplanting period, combined with the seedling age of 35-45 days, the seedling raising time is precisely determined and the seedling raising work is carried out. After the tobacco seedlings enter the large cross stage, timely increase light and ventilation to harden the seedlings early. For example, if transplanting is scheduled for May 1st in Xiangcheng Town, the seedling age is about 40 days, and the sowing time is approximately March 20th.

[0072] Next, soil preparation and ridging are carried out. The soil is plowed to break up the plow pan, making it loose, improving aeration and water permeability, and enhancing its physical and chemical properties. After plowing, the land is further processed to break up the soil and level it. Following the requirements of deep plowing and high ridging, long fields with short ridgings, and smooth irrigation and drainage, suitable ridging shapes, widths, heights, and spacing are planned. Because transplanting seedlings under plastic film benefits from the film's water and heat retention properties, the transplanting period can be appropriately advanced, and soil preparation should also be done earlier. If early soil preparation is not possible due to the influence of winter crops, it should be carried out according to the normal season.

[0073] After leveling and soil moisture control, ridging and planting holes should be made. The depth of the planting holes should be 12-15 cm (10-12 cm for tobacco fields with high water levels), and the horizontal diameter should be 20-23 cm to ensure that the leaves are at least 7 cm above the mulch after transplanting. After planting, spray the planting holes and ridges with a 600-800 times dilution of 10% nicotine emulsifiable concentrate or a 2500 times dilution of 25 g / L high-efficiency cyhalothrin emulsifiable concentrate to control underground pests.

[0074] Then, fertilize the tobacco ponds by applying 50 kg of compound fertilizer per acre (1 / 3 of the base fertilizer). Next, cover the fertilizer and the surface of the pond with well-rotted farmyard manure or fine soil to prevent fertilizer volatilization and retain moisture. Afterward, cover the ponds with black plastic film with a light transmittance of 30%-40% and a thickness of 0.8-1μm. Before covering, prepare the soil on the ridges. When covering, press the sides of the film firmly with soil to prevent the film from tearing or lifting.

[0075] Select tobacco seedlings that are 35-45 days old, have 4-5 leaves (4 leaves and 1 bud to 5 leaves and 1 bud), are 5-6 cm tall, sturdy and strong, with bright green leaves, well-developed root system, and are clean, free from diseases and pests, and whose leaves have not been pruned. Place them on the seedling placement tray of the integrated transplanting machine and carry out the transplanting of flue-cured tobacco seedlings under the film.

[0076] First, prepare the equipment. Securely install bracket 1 onto vehicle body 8, and carefully check the connections of each component to ensure they are secure and not loose. Test the electric push rod and first cylinder 204, ensuring they operate normally, and test the data transmission between the controller and the vision sensor to put the entire system into working condition.

[0077] Next, the vehicle body 8 is moved within the smoke pit to begin the membrane opening operation. The first electric push rod 302 is activated, and its telescopic rod then moves the movable end of the linear track 303, which in turn pushes the fixed block 304 to move the opening piece 308 upwards towards the black membrane. During this process, the gas spring 309 takes effect first, causing the pressure plate 3091 to press down on the black membrane. Subsequently, the opening piece 308 continues to move downwards under the continuous action of the fixed block 304, and its sharp lower end smoothly inserts into the black membrane. Next, the second electric push rod 305 is activated. Its telescopic rod drives the straight groove rod 306 to move. The straight groove rod 306 drives the swing rod 307 to swing through the convex shaft, which ultimately causes the opening part 308 to swing, performing precise opening treatment on the black film. After the film opening is completed, the seedling tray containing the flue-cured tobacco seedlings is placed in the seedling tray placement slot 103 of the feeding channel 102. The flue-cured tobacco seedlings are manually placed into the feeding channel 102. The flue-cured tobacco seedlings will naturally slide down the slope of the feeding channel 102 onto the seedling guide platform 406. At this time, the first cylinder 204 in the drive component 2 is activated. Its piston rod drives the connecting shaft 203 to move. The connecting shaft 203 then drives the round shaft 4021 to move. While the round shaft 4021 moves within the fixed track 401, it also drives the first limiting plate 402 to move. The first limiting plate 402 then drives the second limiting plate 403 to move. The bottom of the second limiting plate 403 is slightly tilted downwards. Its unique arc-shaped structure provides good guidance and restraint for the tobacco seedlings, effectively preventing them from falling. During the movement of the first limiting plate 402, the connecting rod 4041 swings, causing the soil-lifting plate 404 to swing downwards. As it swings downwards, the soil-lifting plate 404 inserts into the soil and clears it, creating suitable space for the tobacco seedlings to fall. Simultaneously, the swinging of the soil-lifting plate 404 causes the rotating shaft 405 to rotate, which in turn causes the outer end of the seedling guide plate 4051 to swing upwards. Under the guidance of the seedling guide plate 4051 on the seedling guide platform 406, the tobacco seedlings on the guide plate 4010 move along with it. As the seedling guide plate 4051 is lifted, the tobacco seedlings slide down and move along the channel between the lower side of the auxiliary conveyor shaft 4023 and the soil-removing plate 404. The auxiliary conveyor shaft 4023 rotates as the tobacco seedlings move to assist them in moving smoothly. Finally, the tobacco seedlings slide down along the soil-removing plate 404 and enter the pit opened by the soil-removing plate 404, completing the seedling placement process.

[0078] Throughout the transplanting process, when the visual sensor on the upper side of the seedling baffle 501 detects a tobacco seedling passing by, the third electric push rod 502 reacts quickly, controlling the seedling baffle 501 to move upward to block the lower end of the feeding channel 102, preventing the next tobacco seedling from accidentally entering. After completing one soil-removing action and the piston rod of the first cylinder 204 drives the second limit plate 403 and the soil-removing plate 404 back to their initial positions, the baffle assembly 5 drives the seedling baffle 501 to move downward back to its original position, so as to carry out the next seedling placement operation.

[0079] The above descriptions are merely two embodiments of an absorption tube fixing bracket of the present invention and do not limit the patent scope of the present invention. Any equivalent structural or process transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A method for transplanting tobacco seedlings under plastic film through a smear, comprising the following steps: characterized by: S1: Determine the seedling time and carry out seedling cultivation; S2: Adjust soil moisture; S3: Digging ponds, digging ponds after ridging to set up tobacco ponds; S4: Insect control treatment is carried out by spraying tobacco ponds and tobacco rows with nicotine emulsifiable concentrate or high-efficiency cyhalothrin emulsifiable concentrate to control underground pests. S5: Fertilize the tobacco pond, and then cover the tobacco pond with a film after fertilization; S6: Select suitable tobacco seedlings and place them on the seedling placement tray of the integrated transplanting machine. Use the film opening component (3) of the integrated transplanting machine to make a hole in the black film, and use the seedling dropping component (4) of the integrated transplanting machine to transplant the tobacco seedlings. The film opening component (3) can make a hole in the black film, and the seedling dropping component (4) can transplant the seedlings in the seedling tray placement trough (103) to the soil at the hole in the tobacco pond. S7: Install drip irrigation promptly after transplanting and water the plants using drip irrigation; In the S6, the integrated transplanting machine includes a support (1), a film opening assembly (3), a seedling placement assembly (4), and a seedling tray placement trough (103). The seedling placement tray is installed on the support (1). The film opening assembly (3) and the seedling placement assembly (4) are both installed on the support (1). The support (1) is equipped with a controller and a driver's cab. The controller is used to control the film opening assembly (3) and the seedling placement assembly (4). The bracket (1) is installed on the vehicle body (8). The bracket (1) consists of a support cavity (101), a feeding channel (102), a seedling tray placement slot (103), a connecting frame (194), and a base (105). One end of the two sides of the support cavity (101) is fixedly connected to the feeding channel (102) through the connecting frame (194). The seedling tray placement slot (103) is fixedly provided on the upper side of the feeding channel (102). The lower side of the inside of the feeding channel (102) is a sloping surface. The lower end of the feeding channel (102) is fixedly connected to the base (105). The base (105) is L-shaped. The other end of the support cavity (101) is connected to the membrane opening assembly (3). The seedling dropping assembly (4) is provided inside the support cavity (101). The seedling dropping assembly (4) is connected to the driving component (2). The driving component (2) is used to drive the seedling dropping assembly (4) to work. The membrane opening assembly (3) includes a fixed plate (301), a first electric push rod (302), a linear track (303), a fixed block (304), a second electric push rod (305), a straight groove rod (306), a swing rod (307), an opening component (308), a gas spring (309), and a pressure plate (3091). The fixed plate (301) is fixed to the upper side of the other end of the support cavity (101), and the first electric push rod (302) is fixedly installed on the lower side of the fixed plate (301). An electric push rod (302) is fixedly connected to the movable end of the linear track (303). The fixed end of the linear track (303) is fixedly connected to the support cavity (101). The movable end of the linear track (303) is fixedly connected to the fixed block (304). The lower end of the fixed block (304) is rotatably connected to the upper end of the vertical rod (3081) fixed at both ends of the upper side of the opening (308). The opening (308) is semi-conical. The upper end of one of the vertical rods (3081) is fixed. One end of the swing rod (307) is connected, and the included angle between the swing rod (307) and the vertical rod (3081) is 150-160 degrees. The upper end of the swing rod (307) is fixedly connected to a convex shaft, which is set in the groove of the straight groove rod (306). The convex shaft matches the straight groove rod (306). The upper side of the straight groove rod (306) is fixedly connected to the telescopic rod of the second electric push rod (305). The second electric push rod (305) is fixed to one side of the fixed block (304). One end of the gas spring (309) is fixedly disposed on the lower side of the fixed block (304), and the other end of the gas spring (309) is fixedly disposed on the pressure plate (3091). The pressure plate (3091) is higher than the opening member (308). The lower end of the opening member (308) is sharp. After the pressure plate (3091) presses down on the black film, the lower end of the opening member (308) can be inserted into the black film. Under the drive of the telescopic rod of the second electric push rod (305), it swings to open the black film.

2. The method for transplanting flue-cured tobacco seedlings under plastic film according to claim 1, characterized in that: The seedling placement assembly (4) includes a fixed track (401), a first limiting plate (402), a second limiting plate (403), a soil-lifting plate (404), a rotating shaft (405), a seedling guiding platform (406), a limiting plate (407), a support column (408), a spring (409), and a guide plate (4010). The fixed track (401) is fixedly arranged in the middle of both sides of the support cavity (101). Each fixed track (401) has two ends of a round shaft (4021) fixed to one end of the first limiting plate (402) slidably arranged in each of the two fixed tracks (401). The second limiting plate (403) is fixedly arranged at the other end of the first limiting plate (402). The plate (403) is an arc-shaped plate with its tail end facing the soil-removing plate (404). The upper end of the soil-removing plate (404) is fixedly connected to the rotating shaft (405). The rotating shaft (405) is rotatably connected to the supporting cavity (101). The middle parts of both sides of the soil-removing plate (404) are respectively rotatably connected to connecting rods (4041). The other ends of the connecting rods (4041) are respectively rotatably connected to the lower middle parts of both sides of the first limiting plate (402). The rotating shaft (405) is fixedly connected to the seedling guide plate (4051). The seedling guide plate (4051) is inclined. The included angle between the seedling guide plate (4051) and the soil-removing plate (404) is 160 degrees. The soil-removing plate (404) The lower part is triangular, which is convenient for insertion into the soil. A base (105) is fixedly installed on the lower side of the feeding channel (102). The base (105) is L-shaped. The vertical plate of the base (105) fixes the feeding channel (102). A seedling guide platform (406) is installed on the horizontal plate of the base (105). The seedling guide platform (406) is L-shaped and the vertical plate can abut against the horizontal plate of the base (105). The lower side of the horizontal plate of the seedling guide platform (406) is fixedly provided with the movable end of a symmetrical guide member (4061). The fixed end of the guide member (4061) is fixed to the horizontal plate of the base (105). The horizontal plate of the seedling guide platform (406) A square opening is provided in the middle, and one end of a guide plate (4010) is rotatably connected inside the opening. A guide plate tail plate (4011) is fixedly provided at the other end of the guide plate (4010). The guide plate tail plate (4011) is inclined and can abut against the lower side of the outer end of the seedling guide plate (4051). The lower parts of the two sides of the other end of the guide plate (4010) are respectively fixedly connected to the lower side of the horizontal plate of the seedling guide platform (406) by the spring (409). The upper parts of the two sides of the horizontal plate of the seedling guide platform (406) are respectively connected to the second limiting plate (403) by the support column (408). The upper end of the support column (408) is provided with a notch and a sliding shaft is fixedly provided inside the notch. The round shaft (4021) fixed to the end of the second limiting plate (403) is fixedly connected to the two ends of the U-shaped fixing rod (4022). The U-shaped fixing rod (4022) and the second limiting plate (403) are arranged in a straight line. Limiting grooves (4024) are respectively opened on the upper ends of the two sides of the U-shaped fixing rod (4022). The sliding shaft is provided in the limiting groove (4024). The limiting groove (4024) matches the sliding shaft. The two sides of the U-shaped fixing rod (4022) are respectively rotatably connected to the two ends of the auxiliary transmission shaft (4023). The auxiliary transmission shaft (4023) is located in the area between the round shaft (4021) and the limiting groove (4024).

3. The method for transplanting flue-cured tobacco seedlings under plastic film according to claim 2, characterized in that: The circular shaft (4021) is connected to the drive component (2). The drive component (2) includes a slot (201), a moving block (202), a connecting shaft (203), and a first cylinder (204). The connecting shaft (203) is fixedly provided at one end of the circular shaft (4021). The slot (201) is provided on one side of the support cavity (101) corresponding to the connecting shaft (203). The connecting shaft (203) passes through the slot (201). One end of the connecting shaft (203) is fixedly connected to the piston rod of the first cylinder (204). The outer shell of the first cylinder (204) is fixed to the outside of the support cavity (101).

4. The method for transplanting flue-cured tobacco seedlings under plastic film according to claim 3, characterized in that: The lower middle part of the soil-pulling plate (404) is also fixedly provided with seedling-gathering plates (4042) on both sides, which are used to guide the flue-cured tobacco seedlings and gather their leaves.

5. The method for transplanting flue-cured tobacco seedlings under plastic film according to claim 4, characterized in that: The base (105) is also provided with a baffle assembly (5), which includes a seedling baffle (501) and a third electric push rod (502). The seedling baffle (501) is fixed to the upper end of the telescopic rod of the third electric push rod (502). The third electric push rod (502) is fixed to the horizontal plate of the base (105). A square channel is opened on the vertical plate of the seedling guide platform (406). The baffle assembly (5) is set in the square channel. The third electric push rod (502) can drive the seedling baffle (501) to rise and fall to block the end of the feeding channel (102). A vision sensor is embedded on the upper side of the seedling baffle (501).

6. The method for transplanting flue-cured tobacco seedlings under plastic film according to claim 5, characterized in that: The controller controls the first electric push rod (302), the second electric push rod (305), the third electric push rod (502), and the first cylinder (204). The vision sensor transmits data with the controller. The vision sensor is used to monitor whether there are tobacco seedlings passing by. When the vision sensor on the upper side of the seedling baffle (501) detects that there are tobacco seedlings passing by, the third electric push rod (502) will control the seedling baffle (501) to move up to block the lower end of the feeding channel (102) to prevent the next tobacco seedling from passing by.

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