High-density single-row precision hole sowing medicinal material seedling raising combined machine

Abstract

According to the high-density single-row precision hole sowing medicinal material seedling raising combined machine provided by the invention, the single-row precision hole sowing mechanism is arranged below the middle part of the rack and is connected with the seed box, and the land wheel assembly is matched and is in transmission connection with the hole sowing mechanism through the second transmission mechanism, so that the operation mode of completing multi-row precision sowing at one time in a single row is realized; the problems of mulching film displacement and seed hole dislocation caused by staggered arrangement of the front row and the rear row are thoroughly solved, and the phenomenon of seedling burning is fundamentally eradicated. Meanwhile, through sequential cooperation of the front land leveling mechanism, the pressing roller, the film spreading and paving mechanism and the soil covering mechanism, integrated operation of land leveling, compacting and ditching, film spreading and paving and film side soil covering is achieved, and a good soil environment is created for seed germination. In addition, soil around the seeds is further compacted through the arrangement of the seed pressing mechanism, close contact between the seeds and the soil is promoted, seedling emergence is neat, and the operation quality and the production efficiency of medicinal material seedling raising are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery technology, and in particular to a high-density single-row precision hole-sowing machine for combined operation of medicinal herb seedling cultivation. Background Technology

[0002] Medicinal herb cultivation is fundamental to the sustainable development of the traditional Chinese medicine industry. In particular, the artificial seedling cultivation and large-scale planting of precious medicinal herbs are crucial for ensuring quality and market supply. With the widespread application of plastic film mulching technology, combined medicinal herb seedling cultivation machines, capable of integrating multiple processes such as leveling, mulching, and sowing, have seen rapid adoption in major medicinal herb producing areas in recent years. As land use intensifies and efficiency is prioritized, agricultural producers are demanding higher yields per unit area, prompting medicinal herb seedling cultivation to move towards higher density and precision, aiming to obtain more qualified seedlings within limited arable land.

[0003] Existing medicinal herb seedling combined operation machines typically employ a multi-row seeder structure with staggered front and rear arrangements to achieve multi-row planting. Specifically, limited by the radial dimensions of the seeder itself and the installation space for the duckbill assembly, when high-density planting of more than 8-10 rows is required within a standard width, a single-row arrangement cannot meet the space requirements. Therefore, it is necessary to divide the seeder into two rows, for example, 6 rows in the front row and 5 rows in the back row, avoiding spatial interference through staggered arrangement. However, this structure reveals serious technical defects during field operations: the duckbill of the rear row seeder generates continuous friction on the mulch film during the insertion and removal of the duckbill, causing the mulch film to undergo a slight but irreversible backward displacement relative to the ground. After the rear row has completed sowing, the seed holes opened on the mulch film by the front row seeder have shifted positionally from the seed holes on the soil below, with a shift amount reaching 10-20 mm. The direct consequence is that after the seeds sown in the front row emerge from the soil, the seedlings cannot properly emerge from the misaligned seed holes and are completely covered by the mulch film. This leads to seedling death due to high-temperature scorching or hindered photosynthesis, resulting in a severe "seedling burn" phenomenon that greatly affects the seedling survival rate and planting efficiency. In addition, traditional machinery often uses a single-sided wheel drive system. In high-density planting, which significantly increases sowing resistance, insufficient driving force and slippage are prone to occur, leading to sowing quality defects such as empty holes and missed sowing.

[0004] Therefore, there is an urgent need in this field to develop a combined operation machine for medicinal herb seedling cultivation that can completely eliminate the problem of seed hole misalignment caused by mulch film displacement while ensuring high-density planting, and can provide stable and reliable sowing power, so as to meet the production needs of high-quality and high-efficiency medicinal herb seedling cultivation. Summary of the Invention

[0005] The purpose of this invention is to provide a high-density single-row precision hole-sowing machine for medicinal herb seedling cultivation, so as to solve the problems existing in the prior art.

[0006] To achieve the above objectives, the present invention provides the following solution: This invention provides a high-density single-row precision hole-sowing medicinal herb seedling cultivation combined operation machine, suspended behind the drive mechanism, comprising: The frame is set along the working direction; The transmission system includes a gearbox connected to the power output shaft of the drive machinery, and a first transmission mechanism driven by the gearbox; The seed material box is located at the upper middle part of the frame; A single-row precision seeding mechanism is installed in the lower middle part of the frame and is connected to the bottom outlet of the seed box. It includes at least one seeder arranged along the width of the frame. The seeder is used to complete the precision seeding of a single row of multiple rows of seeds on the ground in one go. The seed compaction mechanism is installed on the frame and located behind the single-row precision seeding mechanism. Its wheel surface contacts the ground surface where the seeds are sown to compact the soil around the seeds. A ground wheel assembly is rotatably disposed at the rear of the frame and is connected to the single-row precision seeding mechanism via a second transmission mechanism.

[0007] Preferably, it further includes: A front-mounted leveling mechanism, installed at the front of the frame, is used to level the ground.

[0008] Preferably, it further includes: The compaction roller is rotatably connected to the front of the frame, located behind the front leveling mechanism, and driven to rotate by the first transmission mechanism. It is used to compact the leveled ground. Grooving parts are provided on both sides of the compaction roller to press out two parallel V-shaped grooves on the compacted ground.

[0009] Preferably, the grooving component is a conical ring, which is fixedly installed at the end of the pressing roller, rotates together with the pressing roller, and forms a V-shaped groove on the ground during the rotation.

[0010] Preferably, it further includes: The film spreading and flattening mechanism is installed on the frame and located behind the pressing roller. It is used to spread the mulch film flat on the compacted ground and make the two sides of the mulch film fall into the two V-shaped grooves respectively.

[0011] Preferably, the film spreading and leveling mechanism includes a film hanging assembly, and a film spreading assembly is provided below the film hanging assembly for spreading and smoothing the mulch film.

[0012] Preferably, it further includes: The soil covering mechanism, which uses a soil covering disc, is installed on the frame and located behind the film spreading and leveling mechanism. It is used to cover the sides of the film that has fallen into the V-shaped trench with soil.

[0013] Preferably, the seeder includes a single-row seeder and a double-row seeder, with multiple rows of seeders and at least one single-row seeder arranged side by side along the width of the frame to achieve high-density single-row planting; The single-row seeding device includes: A single-row seeder body, which is fixed by a seeder frame, has grounding plates and duckbill components evenly distributed around its circumference. Seed dropping mechanism, which is located on the side of the single-row seeder body and is connected to the discharge port of the seed box; The dual-row seeding device includes: The double-row seeder body is fixed by a seeder frame and has grounding plates and duckbill components evenly distributed around its circumference. The left seed dropping mechanism is located on the left side of the double-row seeder body and is connected to the discharge port of the seed box. The right-side seed dropping mechanism is located on the right side of the double-row seeder body and is connected to the discharge port of the seed box.

[0014] Preferably, the single-row precision seeding mechanism further includes: The seeding shaft is rotatably connected to the frame and extends along the width of the frame. The single-row seeder and the double-row seeder are both fixedly sleeved on the seeding shaft. The seeding shaft is connected to the ground wheel assembly through a second transmission mechanism.

[0015] Preferably, the ground wheel assembly includes: The ground wheel axle is connected to the frame via a connecting component and is rotatably located behind the seed pressing mechanism via a bearing. The ground wheel axle is connected to the second transmission mechanism via a transmission connection. The two ground wheels are respectively fixed on the left and right sides of the ground wheel axle, and are used to contact the ground and roll with the friction of the ground during operation.

[0016] The present invention achieves the following beneficial technical effects compared to the prior art: This invention provides a high-density single-row precision seeding machine for medicinal herb cultivation, characterized by its reasonable structural design, high sowing precision, and excellent seedling emergence. By placing the single-row precision seeding mechanism in the lower center of the frame and supporting the seeding box, and connecting it to the seeding mechanism via a second transmission mechanism using a ground wheel assembly, it achieves a single-row, multi-row precision sowing operation mode. This completely eliminates the problems of film displacement and seed hole misalignment caused by staggered front and rear row arrangements, fundamentally preventing the occurrence of "seedling burn." Simultaneously, through the sequential coordination of the front-mounted leveling mechanism, the pressing roller, the film spreading and leveling mechanism, and the soil covering mechanism, it achieves integrated operations of leveling the ground, compacting and furrowing, spreading and leveling the film, and covering the film sides with soil, creating a favorable soil environment for seed germination. In particular, the conical ring furrowing components on both sides of the pressing roller can simultaneously form V-shaped furrows while compacting the ground, ensuring that the sides of the film are stably buried in the soil, effectively improving the quality of film laying and wind resistance. In addition, the seed pressing mechanism further compacts the soil around the seeds, promotes close contact between the seeds and the soil, which is conducive to uniform germination and significantly improves the quality and efficiency of medicinal seedling cultivation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a top view of the high-density single-row precision hole-sowing medicinal herb seedling combined operation machine provided by the present invention; Figure 2 Side view of the high-density single-row precision hole-sowing medicinal herb seedling combined operation machine provided by the present invention; Figure 3 Side view of the single-row hole seeder of the high-density single-row precision hole-seeding medicinal herb seedling combined operation machine provided by the present invention; Figure 4 Left side view of the double-row seeder of the high-density single-row precision seeding machine for medicinal herb seedling cultivation provided by the present invention; Figure 5 The right side view of the double-row seeder of the high-density single-row precision hole-seeding medicinal herb seedling combined operation machine provided by the present invention; Figure 6 A schematic diagram of the ground wheel assembly structure of the high-density single-row precision hole-sowing medicinal herb seedling combined operation machine provided by the present invention. Detailed Implementation

[0019] The serial numbers assigned to components in this document, such as "first," "second," etc., are merely used to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0020] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] The purpose of this invention is to provide a high-density single-row precision hole-sowing medicinal herb seedling cultivation combined operation machine, which can effectively solve the problems of mulch film displacement, seed hole misalignment and "seedling burning" caused by the staggered arrangement of front and rear rows of hole sowers in the existing technology. At the same time, it overcomes the defects of insufficient driving force of traditional single-sided ground wheel under high-density planting conditions, which easily leads to missed sowing in empty holes.

[0023] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Example 1: Please refer to Figure 1 and Figure 2 , Figure 1 This is a top view of the high-density single-row precision hole-sowing medicinal herb seedling combined operation machine provided in an embodiment of the present invention. Figure 2The figure shows its side view. As shown, this embodiment provides a high-density single-row precision seeding machine for medicinal herb seedling cultivation. The machine is suspended behind a tractor or other driving machinery, and is towed and powered by the driving machinery. The combined operation machine mainly includes a frame 1, which serves as the mounting base for the entire equipment, along the operating direction (i.e.,...). Figure 2 The rack extends longitudinally from left to right, and each functional mechanism is installed on the rack 1 in sequence according to the operation order.

[0025] The front of the frame 1 is equipped with a pre-leveling mechanism 2, which is used to level the land surface at the beginning of the operation, remove surface soil clods and debris, and create a level working foundation for subsequent mulching and sowing. The pre-leveling mechanism 2 can take various forms such as a flat floor, rotary tiller blades, or harrow blades, and the specific structure can be selected according to soil conditions and agronomic requirements.

[0026] A transmission system is mounted on the frame 1, comprising a gearbox 3 and a first transmission mechanism 4 driven by the gearbox 3. The input end of the gearbox 3 is connected to the tractor's power output shaft via a universal joint drive shaft, used to adjust and reverse the speed of the tractor's output power before transmitting it to the first transmission mechanism 4. The first transmission mechanism 4 can be a sprocket and chain drive mechanism or a pulley and belt drive mechanism, used to transmit power to subsequent working components that need to be driven.

[0027] Please refer to Figure 1 and Figure 2 A pressing roller 5 is rotatably connected to the front of the frame 1, located behind the front leveling mechanism 2. The roller shaft of the pressing roller 5 is connected to the output end of the first transmission mechanism 4, and is thus driven to rotate by the gearbox 3 and the first transmission mechanism 4. The pressing roller 5 is used to compact the ground leveled by the front leveling mechanism 2, forming a flat and dense sowing base layer. In this embodiment, ditching components are fixedly installed on both sides of the pressing roller 5. The ditching components are preferably conical ring structures. The conical rings rotate together with the pressing roller 5, and during the rolling process, they rely on their conical structure to squeeze and form two V-shaped grooves extending along the working direction on the ground. The positions of these two V-shaped grooves correspond to the two sides of the mulch film to be laid later, and are used to accommodate the sides of the mulch film and bury them in the soil.

[0028] Please continue to refer to this. Figure 1 and Figure 2A film spreading and leveling mechanism 6 is installed on the frame 1, behind the pressing roller 5. The film spreading and leveling mechanism 6 includes a film mounting assembly 61 and a film spreading assembly 62. The film mounting assembly 61 is used to mount the mulch film roll, which is rotatably mounted on the mounting assembly 61 and can be released during operation. The film spreading assembly 62 is located below the mounting assembly 61 and typically includes a spreading rod or spreading roller. It is used to unfold, smooth, and guide the mulch film M released from the mulch film roll onto the ground compacted by the pressing roller 5. During operation, the film spreading and leveling mechanism 6 ensures that both sides of the mulch film M accurately fall into two V-shaped grooves.

[0029] A soil covering mechanism 7 is installed on the frame 1, behind the film spreading and leveling mechanism 6. In this embodiment, the soil covering mechanism 7 uses a soil covering disc, with one disc positioned behind each V-shaped trench. The soil covering disc is rotatably connected to the frame 1, and its surface forms a certain angle with the ground. As the equipment moves forward, it can scrape and push the soil on both sides of the V-shaped trench into the trench, thereby covering and burying the sides of the mulch film M that has fallen into the trench, thus completing the soil covering operation on the sides of the film.

[0030] A seed box 8 is fixedly installed at the top center of the frame 1. The seed box 8 is used to store medicinal seeds to be sown. Multiple discharge ports are provided at the bottom of the box to supply seeds to the seeder.

[0031] Please refer to Figures 1 to 5 A single-row precision seeding mechanism 9 is installed at the lower center of the frame 1, at the bottom outlet of the seed box 8. The single-row precision seeding mechanism 9 includes a seeding shaft and multiple seeders arranged side-by-side along the width (i.e., transversely) of the seeding shaft. The seeding shaft is rotatably connected to the frame 1 and extends horizontally along the width of the frame, with both ends mounted on the side plates of the frame 1 via bearing seats. In this embodiment, to achieve high-density planting, multiple seeders are arranged side-by-side along the seeding shaft to complete the precision seeding of multiple rows of seeds in a single pass on the ground covered by the mulch film M.

[0032] Please refer to this carefully. Figures 3 to 5 To achieve high-density planting within a limited width, the seeders in this embodiment include two types: single-row seeders 91 and double-row seeders 92. Multiple double-row seeders 92 and at least one single-row seeder 91 are arranged side-by-side along the axial direction of the seeding axis, forming a single-row seeder array to achieve, for example, a high-density single-row planting layout of 11 rows. Taking a width of 1500mm and 11 rows as an example, 10 rows can be achieved by 5 double-row seeders 92 (each double-row seeder 92 sowing 2 rows), and the remaining row is achieved by one single-row seeder 91.

[0033] like Figure 3As shown, the single-row seeder 91 includes a single-row seeder body 911. The single-row seeder body 911 is fixedly mounted on the seeding shaft via a seeder frame and rotates together with the seeding shaft. Multiple contact plates 912 and duckbill assemblies 913 are evenly distributed along the circumference of the outer periphery of the single-row seeder body 911. The contact plates 912 are used to contact the ground and generate friction during rotation, driving the seeder body to rotate; the duckbill assemblies 913 are used to open when entering the soil, sowing seeds into the soil. A seed dropping mechanism 914 is located on the side (e.g., left or right side) of the single-row seeder body 911. Its inlet is connected to the corresponding outlet of the seed box 8 via a hose or directly, and its outlet communicates with the seed cavity inside the single-row seeder body 911 to introduce seeds into the seeder.

[0034] like Figure 4 and Figure 5 As shown, the double-row seeder 92 includes a double-row seeder body 921. The double-row seeder body 921 is also fixedly mounted on the seeding shaft via a seeder frame and rotates together with the seeding shaft. The double-row seeder body 921 has two independent seed chambers (not shown in the figure) inside. Two sets of contact plates and duckbill assemblies are evenly distributed along the circumference of its outer periphery, corresponding to the seed outlets of the two seed chambers respectively. To achieve double-row seeding, a left seed dropping mechanism 922 and a right seed dropping mechanism 923 are respectively provided on the left and right sides of the double-row seeder body 921. The left seed dropping mechanism 922 and the right seed dropping mechanism 923 are respectively connected to different outlets of the seed box 8 and are respectively connected to the two independent seed chambers inside the double-row seeder body 921 for supplying seeds to the two seed chambers respectively.

[0035] Please refer to Figure 1 and Figure 2 A seed pressing mechanism 11 is installed on the frame 1, behind the single-row precision seeding mechanism 9. The seed pressing mechanism 11 can be a seed pressing wheel, which is rotatably connected to the frame 1. The wheel surface contacts the ground surface after the seeds are sown, and is used to cover and compact the sown seeds, compact the soil around the seeds, promote close contact between the seeds and the soil, and facilitate seed water absorption and germination.

[0036] A ground wheel assembly 10 is provided at the rear of frame 1. Please refer to... Figure 1 , Figure 2 and Figure 6The ground wheel assembly 10 includes a ground wheel axle 101 and two ground wheels 102. The ground wheel axle 101 is rotatably connected to the rear of the frame 1 via connecting components (such as bearing seats and swing arms) and is located behind the seed pressing mechanism 11. The two ground wheels 102 are fixedly connected to the left and right sides of the ground wheel axle 101, respectively. During operation, the wheel surfaces of the ground wheels 102 are in close contact with the ground and passively rub and roll as the equipment moves forward. The ground wheel axle 101 is connected to the sowing shaft via a second transmission mechanism 12. The second transmission mechanism 12 is preferably a sprocket and chain transmission mechanism. When the ground wheels 102 roll forward with the equipment, their rotational power is transmitted to the sowing shaft via the ground wheel axle 101 and the second transmission mechanism 12, thereby driving all the single-row seeders 91 and double-row seeders 92 mounted side by side on the sowing shaft to rotate synchronously for precision seeding.

[0037] The working principle of this invention is as follows: The implement is suspended behind the tractor, which moves forward and provides power. The front-mounted leveling mechanism 2 first levels the ground surface. The gearbox 3 transmits the tractor's power to the compaction roller 5 through the first transmission mechanism 4. The compaction roller 5 rotates and compacts the ground, while the conical groove opening parts on both sides of it squeeze out two V-shaped grooves on the ground. The film spreading and leveling mechanism 6 unfolds the film and lays it flat on the compacted ground, so that the edges of the film fall into the V-shaped grooves. The soil covering mechanism 7 then pushes soil to cover the edges of the film. At the same time, the ground wheel assembly 10 rolls as the equipment moves forward, and its power is transmitted to the sowing shaft through the second transmission mechanism 12, driving all the seeders to rotate. Seeds enter the seeders from the seed box 8 through the seed dropping mechanism. When the duckbill assembly on the seeder rotates to the lowest point and enters the soil, the duckbill opens, precisely sowing the seeds into the soil. Subsequently, the seed pressing mechanism 11 compacts the sown seeds, completing the entire operation cycle.

[0038] In summary, this invention, by placing a single-row precision seeding mechanism in the lower middle of the frame and supporting the seed hopper, and connecting it to the seeding mechanism via a second transmission mechanism using double-sided ground wheel assemblies, achieves a single-row precision seeding operation mode that completes multiple rows of seeding in one go. This completely eliminates the problems of film displacement and seed hole misalignment caused by staggered front and rear row arrangements, fundamentally preventing the occurrence of "seedling burn." Simultaneously, through the sequential coordination of the front-mounted leveling mechanism, the pressing roller, the film spreading and leveling mechanism, and the soil covering mechanism, an integrated operation of leveling the ground, compacting and furrowing, spreading and leveling the film, and covering the film sides with soil is achieved, creating a favorable soil environment for seed germination. In particular, the conical ring furrowing components on both sides of the pressing roller can simultaneously form V-shaped furrows while compacting the ground, ensuring that the sides of the film are stably buried in the soil, effectively improving the quality of film laying and wind resistance. Furthermore, the seed pressing mechanism further compacts the soil around the seeds, promoting close contact between the seeds and the soil, which is conducive to uniform seedling emergence and significantly improves the operational quality and production efficiency of medicinal herb seedling cultivation.

[0039] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0040] It should be noted that the components mentioned in the above embodiments are all general standard parts or components known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0041] This invention has used specific examples to illustrate its principles and implementation methods. The above descriptions of the embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A high-density single-row precision hole-sowing medicinal herb seedling cultivation combined operation machine, suspended behind the drive mechanism, characterized in that, include: The frame is set along the working direction; The transmission system includes a gearbox connected to the power output shaft of the drive machinery, and a first transmission mechanism driven by the gearbox; The seed material box is located at the upper middle part of the frame; A single-row precision seeding mechanism is installed in the lower middle part of the frame and is connected to the bottom outlet of the seed box. It includes at least one seeder arranged along the width of the frame. The seeder is used to complete the precision seeding of a single row of multiple rows of seeds on the ground in one go. The seed compaction mechanism is installed on the frame and located behind the single-row precision seeding mechanism. Its wheel surface contacts the ground surface where the seeds are sown to compact the soil around the seeds. A ground wheel assembly is rotatably disposed at the rear of the frame and is connected to the single-row precision seeding mechanism via a second transmission mechanism.

2. The high-density single-row precision hole-sowing medicinal herb seedling combined operation machine according to claim 1, characterized in that, Also includes: A front-mounted leveling mechanism, installed at the front of the frame, is used to level the ground.

3. The high-density single-row precision hole-sowing medicinal herb seedling combined operation machine according to claim 2, characterized in that, Also includes: The compaction roller is rotatably connected to the front of the frame, located behind the front leveling mechanism, and driven to rotate by the first transmission mechanism. It is used to compact the leveled ground. Grooving parts are provided on both sides of the compaction roller to press out two parallel V-shaped grooves on the compacted ground.

4. The high-density single-row precision hole-sowing medicinal herb seedling combined operation machine according to claim 3, characterized in that, The grooving component is a conical ring, which is fixedly installed at the end of the pressing roller. It rotates together with the pressing roller and forms a V-shaped groove on the ground during the rotation.

5. The high-density single-row precision hole-sowing medicinal herb seedling combined operation machine according to claim 3, characterized in that, Also includes: The film spreading and flattening mechanism is installed on the frame and located behind the pressing roller. It is used to spread the mulch film flat on the compacted ground and make the two sides of the mulch film fall into the two V-shaped grooves respectively.

6. The high-density single-row precision hole-sowing medicinal herb seedling combined operation machine according to claim 5, characterized in that, The film spreading and leveling mechanism includes a film hanging component, and a film spreading component is provided below the film hanging component for spreading and smoothing the film.

7. The high-density single-row precision hole-sowing medicinal herb seedling combined operation machine according to claim 5, characterized in that, Also includes: The soil covering mechanism, which uses a soil covering disc, is installed on the frame and located behind the film spreading and leveling mechanism. It is used to cover the sides of the film that has fallen into the V-shaped trench with soil.

8. The high-density single-row precision hole-sowing medicinal herb seedling combined operation machine according to claim 1, characterized in that, The seeder includes a single-row seeder and a double-row seeder. Multiple seeders and at least one single-row seeder are arranged side by side along the width of the frame to achieve high-density single-row planting. The single-row seeding device includes: A single-row seeder body, which is fixed by a seeder frame, has grounding plates and duckbill components evenly distributed around its circumference. Seed dropping mechanism, which is located on the side of the single-row seeder body and is connected to the discharge port of the seed box; The dual-row seeding device includes: The double-row seeder body is fixed by a seeder frame and has grounding plates and duckbill components evenly distributed around its circumference. The left seed dropping mechanism is located on the left side of the double-row seeder body and is connected to the discharge port of the seed box. The right-side seed dropping mechanism is located on the right side of the double-row seeder body and is connected to the discharge port of the seed box.

9. The high-density single-row precision hole-sowing medicinal herb seedling combined operation machine according to claim 8, characterized in that, The single-row precision seeding mechanism also includes: The seeding shaft is rotatably connected to the frame and extends along the width of the frame. The single-row seeder and the double-row seeder are both fixedly sleeved on the seeding shaft. The seeding shaft is connected to the ground wheel assembly through a second transmission mechanism.

10. The high-density single-row precision hole-sowing medicinal herb seedling combined operation machine according to claim 9, characterized in that, The ground wheel assembly includes: The ground wheel axle is connected to the frame via a connecting component and is rotatably located behind the seed pressing mechanism via a bearing. The ground wheel axle is connected to the second transmission mechanism via a transmission connection. The two ground wheels are respectively fixed on the left and right sides of the ground wheel axle, and are used to contact the ground and roll with the friction of the ground during operation.

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