Strip furrow depth control seeding mechanism and combined cultivator-seeder

Abstract

The utility model relates to sowing technical field especially relates to a strip pressure ditch control deep seeding mechanism and compound cultivator. Including the land is formed to the downward concave strip pressure band after rotary cultivation pressure band ware, the seed is sowed into the strip pressure band and seeds are sowed the land is pressed after the earth coverer to the seed, and the earth coverer is pressed after the earth coverer and is pressed to the land, and the land is pressed, the seeding mechanism and cultivator body connection, the pressure band ware, seed metering device, earth coverer and earth coverer and are connected in proper order along the rotary cultivation land sowing operation direction. The compound cultivator can effectively reduce the macropore in the soil, improve the soil conservation ability, realize the effect of field seedling bed.

Description

Technical Field

[0001] This utility model relates to the field of sowing technology, and in particular to a strip-shaped furrow-pressing depth-controlled sowing mechanism and a compound tillage machine. Background Technology

[0002] With the increasing level of agricultural mechanization, traditional sowing methods can no longer meet the needs of modern agricultural production. Mechanized sowing can improve sowing efficiency, reduce labor costs, and ensure uniformity and consistency of sowing. However, traditional seeders, which mainly focus on furrowing, present many technical challenges.

[0003] (1) Traditional row seeders use furrowing for sowing, resulting in low flatness of the furrows, insufficient soil compaction, and rapid loss of water and heat, which fails to achieve the desired soil moisture retention effect.

[0004] (2) During the sowing process, traditional row seeders may encounter problems such as seed sticking and uneven spraying, resulting in uneven seed distribution within the rows. This will affect crop growth, causing greater differences between individual plants and making it difficult to build a reasonable population structure.

[0005] (3) Difficulty in controlling sowing depth. Insufficient control of sowing depth may result in inconsistent depths. Sowing too deep or too shallow will affect the germination rate of seeds and seedling growth, thereby reducing the emergence rate and seedling survival rate.

[0006] Traditional row seeders provide relatively fixed row spacing after sowing, which is easier for field management such as weeding and cultivation compared to broadcasting. However, under high-yield cultivation conditions, poor ventilation and light penetration in the later stages of crop growth make it difficult to control the crop population and increases the risk of lodging. Therefore, a solution is urgently needed. Utility Model Content

[0007] The technical problem to be solved by this utility model is to provide a strip-shaped furrow-pressing and depth-controlled sowing mechanism and a compound tillage and sowing machine. The sowing mechanism of the compound tillage and sowing machine can effectively reduce large pores in the soil, greatly improve the soil's moisture retention capacity, and achieve the effect of field seedbed.

[0008] To achieve the aforementioned objective, the technical solution of this utility model is implemented as follows: a strip-shaped furrow controlled-depth sowing mechanism and a compound tillage and seeding machine, comprising: a strip presser for forming a downwardly concave strip-shaped pressing zone on the rotary tilled land, a seed metering device for sowing seeds into the strip-shaped pressing zone, a soil covering device for covering the sown seeds with soil, and a compactor for compacting the soil after covering the seeds; the strip presser, seed metering device, soil covering device, and compactor are connected sequentially along the sowing operation direction of the rotary tilled land.

[0009] Preferably, the sowing mechanism is further provided with a second rotary tillage roller; the second rotary tillage roller is provided with cleaving gears at equal intervals along the axial direction; the cleaving gears are used to cut wounds on the soil surface after sowing and compaction for water to seep into the strip-shaped pressure zone.

[0010] Preferably, the pressing device includes a pressing roller rotatably connected to the sowing mechanism; the pressing roller is provided with pressing wheels at equal intervals along the axial direction; when the tillage machine body moves, the pressing roller rotates and presses down on the land tilled by the rotary tillage mechanism, forming a land surface pressed by the pressing roller and a strip-shaped pressing belt formed by the pressing wheels.

[0011] Preferably, there are two seed metering devices, and the seed metering port of each seed metering device is respectively connected to the Y-shaped seed outlet channel on the sowing mechanism; and at least one seed metering device is detachably connected to the sowing mechanism.

[0012] Preferably, the axial section of the pressure roller is trapezoidal; the length ratio of the upper base to the lower base of the trapezoid is 7:13, and the height is 10-100 mm.

[0013] Preferably, the pressing device is further provided with a ditching scraper in front of the pressing roller, which is used to level the surface soil of the land after rotary tillage. The ditching scraper is provided with scraper teeth, which are aligned with the pressing roller in the direction of travel of the tiller body, and are used to open pre-planting furrows on the leveled soil surface for the pressing roller to press and form a strip pressing belt.

[0014] Preferably, the soil covering device includes a first rotary tillage roller, a soil covering scraper, and a pressing roller. The first rotary tillage roller is provided with crushing gears at equal intervals along the axial direction for rotary tilling and breaking up the topsoil between adjacent strip pressing belts. The soil covering scraper is located behind the first rotary tillage roller for scraping the broken soil from both sides of the top of the strip pressing belt into the strip pressing belt. The pressing roller is located behind the soil covering scraper for pressing and leveling the land again after it has been leveled by the soil covering scraper.

[0015] Preferably, the crushing gear of the first rotary tiller roller is arranged in groups of two or more, and every two groups of crushing gears are symmetrically arranged in the circumferential direction of the first rotary tiller roller; the crushing gear is composed of two connecting parts and at least two gear pieces, one end of each of the two connecting parts is perpendicularly connected to the first rotary tiller roller, and the other end is connected to each other through a connecting rod, and the gear pieces are threaded on the connecting rod.

[0016] Preferably, the seed metering device includes a first type box and a second type box; the discharge ports of the first type box and the second type box are both located between the pressure roller and the first rotary tillage roller, and are used to sprinkle seeds at the bottom of the strip pressure belt.

[0017] Preferably, it also includes a tiller body; a rotary tillage mechanism for turning and loosening the soil to be cultivated; the rotary tillage mechanism is connected to the tiller body, the seeding mechanism and the rotary tillage mechanism are separate, and the seeding mechanism is connected to the tail of the rotary tillage mechanism.

[0018] The beneficial effects of this utility model are reflected in:

[0019] (1) The sowing mechanism provided by this utility model achieves a technological innovation from "furrowing" to "strip compaction" during the sowing process, which can ideally compact the planting furrows used for sowing from multiple angles. This compaction method can effectively reduce large pores in the soil, greatly improve the soil's moisture retention capacity, and achieve the effect of a field seedbed. The deeper the strip compaction formed by the sowing mechanism, the greater the degree of soil compaction, and the more significant the reduction in water temperature loss time. For every 10 cm increase in the depth of the strip compaction, the water temperature loss time may be reduced by about 5%-10%. A wider strip compaction increases the soil compaction area, and the water temperature loss is relatively slower. For example, a 50 cm wide strip compaction can reduce the water temperature loss time in clay soil by about 10% more than a 30 cm wide strip compaction. Thus, the compound tillage and sowing machine provided by this utility model solves the problem of the unsatisfactory furrowing and moisture retention capacity of existing sowing machines.

[0020] (2) The sowing mechanism provided by this utility model increases the number of contact areas between the wheel and the soil and reduces the size of the contact area, which can greatly increase the pressure and improve the quality of the strip pressing. It solves the problems of wide furrows and unevenness of traditional row seeders, which leads to inconsistent seeding depth and high difficulty in field management later.

[0021] (3) The sowing mechanism provided by this utility model adopts the "strip pressing" furrow sowing method, which meets the agronomic requirements of multi-row sowing and can be applied to the sowing of various crops. At the same time, it greatly improves the land utilization rate and is conducive to the intensive use of land resources.

[0022] (4) The sowing mechanism provided by this utility model can press the planting furrows used for sowing at multiple angles, and can be applied to a variety of lands, solving the problem of the land limitation of traditional strip seeders.

[0023] (5) The sowing mechanism provided by this utility model provides a rapid rotating soil-crushing technology, which improves sowing efficiency. At the same time, it adds a design that sows and covers the soil at the same time, so that no additional soil is needed later, which eliminates the soil covering step, simplifies the sowing process and improves sowing efficiency.

[0024] (6) The sowing mechanism provided by this utility model can more accurately control the distribution and depth of seeds, making the seeds more evenly distributed in the soil. This avoids root competition caused by seed accumulation or uneven distribution. Ordinary row seeders may be slightly inferior in terms of sowing uniformity, especially under low seeding conditions, which may lead to uneven root development. The pressure roller of the sowing mechanism of this utility model has a good compaction effect, and the compacted soil has a high degree of uniformity. The seeds land with uniformity and depth, which can make the seedlings emerge neatly and evenly, and facilitate the later field management. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This is a bottom view of the structure of this utility model;

[0027] Figure 3 This is a side view of the structure of this utility model;

[0028] Figure 4 This is a schematic diagram of the structure of the pressure roller of this utility model;

[0029] Figure 5 This is a schematic diagram of the structure of the first rotary tillage roller of this utility model;

[0030] Figure 6 This is a schematic diagram of the structure of the front rotary tiller shaft of this utility model;

[0031] Figure 7 This is a schematic diagram of the strip compression structure of this utility model;

[0032] Figure 8 This is a schematic diagram of the soil structure after sowing and covering with soil using the strip pressing method of this utility model.

[0033] Figure labels and descriptions;

[0034] A. Seeds; B1. First loosening layer; B2. Second loosening layer; B3. Third soil layer; 10. Furrowing wheel; 11. Power input shaft; 12. First gearbox; 121. First rotating shaft; 13. Second rotating shaft; 14. Third rotating shaft; 15. Fourth rotating shaft; 17. Fifth rotating shaft; 18. Sixth rotating shaft; 19. Power transmission rod; 21. Front rotary tiller shaft; 22. Rear rotary tiller shaft; 23. Furrowing scraper; 231. Scraper teeth; 24. Pressure roller; 241. Pressure belt roller; 242. Furrowing gap; 25. First rotary tiller roller; 251. Crushing gear; 2512. Connector; 2513. Gear plate; 26. Soil covering scraper; 261. Scraping teeth; 27. Press roller; 28. Second rotary tiller roller; 281. Crushing gear; 31. Connecting frame; 41. Fertilizer box; 42. First type of box; 43. Second type of box; 51. Strip pressing belt; 52. Trapezoidal ridge; 61. Second gearbox; 62. Third gearbox; 71. Hydraulic rod; 72. Spring rod. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0036] Example

[0037] like Figures 1-8 As shown, this utility model provides a strip-shaped furrow-pressing and depth-controlled sowing mechanism and a compound tillage and sowing machine.

[0038] A strip-shaped furrow-pressing seeding mechanism for controlled seeding includes:

[0039] The rotary tillage process includes a tape presser that forms a downward-concave strip 51 on the soil, a seed metering device that sows seeds A into the strip 51, a soil covering device that covers the sown seeds A with soil, and a compactor that compacts the soil after covering. The tape presser, seed metering device, soil covering device, and compactor are connected sequentially along the sowing direction of the rotary tillage.

[0040] With this setup, the sowing mechanism can press out multiple strips 51 at once and directly sow seeds A within them. Because the strips 51 are formed by compaction, the soil at these strips is well compacted, and the levelness of the compacted soil is highly consistent. This results in uniform seed A distribution and depth, leading to neat and even germination, which facilitates later field management.

[0041] The pressing device includes a pressing roller 24 that is rotatably connected to the sowing mechanism; the pressing roller 24 is provided with pressing wheels 241 at equal intervals along the axial direction; when the tiller body moves, the pressing roller 24 rotates and presses down on the land after being tilled by the rotary tillage mechanism, forming a land surface pressed by the pressing roller 24 and a strip-shaped pressing belt 51 formed by the pressing wheels 241.

[0042] The axial section of the pressure roller 241 is trapezoidal, with the ratio of the length of the upper base to the lower base of the trapezoid being 7:13, and the height being 10-100 mm. As a result, the cross section of the strip pressure belt 51 is inverted T-shaped, which can form an inverted T-shaped planting trench.

[0043] A ditching scraper 23 is located in front of the pressure roller 24 of the belt presser. As the drive unit moves the frame along the land to be cultivated, the ditching scraper 23 levels the surface of the rotary-tilled soil. The ditching scraper 23 has scraper teeth 231, which are aligned with the belt press roller 241 in the direction of the tiller's movement. These teeth are used to create pre-planting furrows on the leveled soil surface for the belt press roller 241 to compact and form the belt 51. Simultaneously, the limited gap between the scraper teeth 231 and the belt press roller 241 allows soil adhering to the belt press roller 241 to be removed by the scraper teeth 231 during the pressing and rotating process of the pressure roller 241, ensuring continuous and stable operation of the belt press roller 241.

[0044] By setting up the ditching and scraping plate 23, not only is the flatness of the land to be cultivated effectively guaranteed, but the working connection between the seeding mechanism and the rotary tillage mechanism is also made closer.

[0045] The soil covering device includes a first rotary tillage roller 25, a soil covering scraper 26, and a compaction roller 27.

[0046] The first rotary tillage roller 25 is provided with crushing gears 251 at equal intervals along the axial direction for rotary tilling and breaking up the topsoil between adjacent strip-shaped pressing belts 51. The crushing gears 251 of the first rotary tillage roller 25 are arranged in groups of two or more, and every two groups of crushing gears 251 are symmetrically arranged in the circumferential direction of the first rotary tillage roller 25. The gear plates 2513 of the crushing gears 251 are rotatably connected to the first rotary tillage roller 25 via rotating shafts.

[0047] In practical applications, the crushing gear 251 consists of two connecting parts 2512 and at least two gear pieces 2513. One end of each of the two connecting parts 2512 is perpendicularly connected to the first rotary tillage roller 25, and the other end is connected to each other through a connecting rod. The gear pieces 2513 are threaded onto the connecting rod. During the rotation of the first rotary tillage roller 25, the multiple gear pieces 2513 can rotate freely due to the inertia brought about by the rotation of the first rotary tillage roller 25 and its own gravity. When in contact with the soil, the friction causes the speed of each gear piece 2513 to be different, so that the crushing gear 251 can crush the soil more finely through the gear pieces 2513 during the rotation, which is convenient for subsequent covering with soil.

[0048] The soil covering scraper 26 is located behind the first rotary tillage roller 25, and the soil covering scraper 26 is provided with scraping teeth 261, which are aligned with the crushing gear 251. It is used to scrape the soil after it has been crushed on both sides of the top of the strip pressing belt 51 into the strip pressing belt 51. The compaction roller 27 is located behind the soil covering scraper 26 and is used to compact and level the land again after it has been leveled by the soil covering scraper 26.

[0049] In practical applications, a groove gap 242 is provided between two adjacent pressure rollers 241 on the pressure roller 24. Since the crushing gear 251 and the scraping tooth 261 are aligned with the groove gap 242, the cross section of the groove gap 242 is a trapezoidal groove. Thus, when the pressure roller 241 compacts the pre-planting furrow, trapezoidal ridges 52 with vertical cross sections are formed on both sides of the strip pressure belt 51.

[0050] This allows the crushing gear 251 to crush the soil at the top of the trapezoidal ridges 52 on both sides of the strip pressing belt 51 under the drive of the first rotary tillage roller 25 as the drive equipment moves the frame forward along the land to be cultivated. The scraping teeth 261 then push the crushed soil from both sides of the top of the strip pressing belt 51 into the strip pressing belt 51, thereby covering the seeds A in the strip pressing belt 51 with soil.

[0051] As the drive equipment moves the frame forward along the land to be cultivated, the press roller 27 presses the surface layer of the soil in the strip press belt 51 and the soil on both sides of the strip press belt 51.

[0052] This results in two types of soil with different densities forming above seed A in the banded compression zone 51: such as Figure 8 As shown, along the vertical direction of the strip-shaped pressure belt 51, there is a second loose soil layer B2 above seed A, and a first loose soil layer B1 above the second loose soil layer B2. The looseness of the second loose soil layer B2 is greater than that of the first loose soil layer B1. The trapezoidal ridges 52 on both sides of seed A are the third soil layer B3, and the looseness of the first loose soil layer B1 is greater than that of the third soil layer B3.

[0053] With this setup, seed A can grow freely in the second loose soil layer B2, surrounded by loose soil that does not affect its growth. At the same time, the third soil layer B3 and the first loose soil layer B1 can effectively reduce the rate of water evaporation in the strip pressure zone 51. The soil on both sides and at the bottom of the strip pressure zone 51 is dense, i.e., the third soil layer B3 is dense, which has a good entropy retention effect, thereby effectively improving the germination rate of seed A in the strip pressure zone 51.

[0054] There are two seed metering devices, and the seed metering port of each seed metering device is respectively connected to the Y-shaped seed outlet channel on the sowing mechanism; and at least one of the seed metering devices is detachably connected to the sowing mechanism.

[0055] In practical applications, the seed metering device is generally composed of a first type of box 42 and a second type of box 43.

[0056] The first type of box 42 and the second type of box 43 are mounted on the frame and fixed by bolts. The discharge ports of the first type of box 42 and the second type of box 43 are both located between the pressure roller 24 and the first rotary tillage roller 25, and are used to sow seeds A at the bottom of the strip pressure belt 51.

[0057] The sowing mechanism is also equipped with a second rotary tillage roller 28, which is used to loosen the soil surface after sowing and compaction. The second rotary tillage roller 28 is provided with breaker gears 281 at equal intervals along the axial direction; the breaker gears 281 are used to cut or scratch wounds on the soil surface after sowing and compaction for water infiltration; the teeth of the breaker gears 281 are set in a rhomboid shape, so the wounds created on the soil surface after compaction are generally in the form of pits, grooves or ditches.

[0058] As the drive unit propels the frame forward along the land to be cultivated, the breaking gear 281 breaks down the surface of the soil on both sides of the strip pressing belt 51 and the surface of the first loose soil layer B1, preventing it from hardening. This allows water to seep into the strip pressing belt 51 along the broken surface during rain or irrigation, promoting the growth of seed A. Simultaneously, to make water infiltration more targeted, the breaking gear 281 can be aligned with the pressing belt wheel 241 along the direction of travel of the tiller body.

[0059] A strip-type pressure-controlled depth-controlled compound tillage and seeding machine includes the aforementioned seeding mechanism, tillage and seeding machine body, and rotary tillage mechanism. The rotary tillage mechanism is used to turn over and loosen the soil to be cultivated. The rotary tillage mechanism is connected to the tillage and seeding machine body, while the seeding mechanism and rotary tillage mechanism are separate units, with the seeding mechanism connected to the tail of the rotary tillage mechanism.

[0060] The seeding mechanism and the rotary tillage mechanism are connected in an active manner.

[0061] In practical applications, a hydraulic rod 71 and a spring rod 72 are provided between the sowing mechanism and the rotary tillage mechanism for connection. The hydraulic rod 71 is arranged horizontally, and the spring rod 72 is arranged obliquely vertically. Both ends of the hydraulic rod 71 and the spring rod 72 are hinged to the sowing mechanism and the rotary tillage mechanism, respectively. By adjusting the length of the hydraulic rod 71, the gap between the rotary tillage mechanism and the tiller body can be adjusted. At the same time, the spring force of the spring rod 72 can drive the sowing mechanism and the rotary tillage mechanism to automatically reset, better adapting to the working conditions of the tiller on uneven land.

[0062] It also includes furrowing wheels 10, which are set on both sides of the frame. When the drive equipment drives the frame of the compound tiller to move forward along the land to be sown through the connecting frame 31, the furrowing wheels 10 on both sides of the frame can dig deep furrows on the land to be sown, thereby cutting and dividing the land into seedbeds.

[0063] In practical applications, ditches are used for irrigation or drainage of seedbeds.

[0064] The rotary tillage mechanism is also equipped with a fertilizer applicator. The rotary tillage mechanism includes a front rotary tillage blade shaft 21 and a rear rotary tillage blade shaft 22; the front rotary tillage blade shaft 21 is used to deeply till the soil of the land to be tilled; the rear rotary tillage blade shaft 22 is used to shallowly till the soil after the front rotary tillage blade shaft 21 has deeply tilled it.

[0065] The fertilizer applicator includes a fertilizer box 41; the outlet of the fertilizer box 41 is located between the front rotary tiller shaft 21 and the rear rotary tiller shaft 22, and is used to spread fertilizer into the soil after the front rotary tiller shaft 21 has deeply rotated.

[0066] In practical applications, the front rotary tiller shaft 21 is mounted on the frame. As the drive equipment moves the frame forward along the land to be tilled, the front rotary tiller shaft 21 deeply rotates the soil of the land to be tilled to a depth of about 50-100 cm.

[0067] As the drive unit moves the frame forward along the land to be cultivated, the rear rotary tiller shaft 22 performs a shallower rotation on the soil that has been deeply rotated by the front rotary tiller shaft 21. The depth of the shallow rotation is about 30-50 cm.

[0068] In addition, in practical applications, when the land to be cultivated does not require rotary tillage and the surface soil is loose and flat enough, since the sowing mechanism and the rotary tillage mechanism are connected, the front rotary tillage blade shaft 21, the rear rotary tillage blade shaft 22 and the furrowing scraper 23 can all be removed from the frame and directly pressed on the land to be cultivated by the pressure roller 24 of the pressure belt device to form a strip pressure belt 51.

[0069] The compound tillage and seeding machine also includes a power mechanism, which is generally the commonly used power mechanism in tillage and seeding machines currently on the market, or the power mechanism designed in this application can be used, as detailed below:

[0070] The power mechanism mainly consists of a power input shaft 11, a first gearbox 12, a second gearbox 61, a third gearbox 62, and a power transmission rod 19.

[0071] The power input shaft 11 is connected to the drive equipment and drives the first gearbox 12, the second gearbox 61, the third gearbox 62 and the power transmission rod 19 to rotate in sequence as the drive equipment moves along the land to be cultivated.

[0072] The first gearbox 12 is used to drive the rotation of the first rotating shafts 121 at both ends of the front rotary tiller shaft 21, thereby providing the front rotary tiller shaft 21 with the power to deeply rotate the land to be sown.

[0073] The second gearbox 61 is used to drive the rotation of the second shafts 13 at both ends of the rear rotary tiller shaft 22, thereby providing the rear rotary tiller shaft 22 with the power to shallowly rotate the soil to be sown.

[0074] The pressure roller 24 has a third rotating shaft 14 at both ends, the first rotary tiller 25 has a fourth rotating shaft 15 at both ends, and the press roller 27 has a fifth rotating shaft 17 at both ends.

[0075] The third gearbox 62 is connected to the third rotating shaft 14, the fourth rotating shaft 15 and the fifth rotating shaft 17 in a transmission connection, so that as the drive equipment moves along the land to be cultivated with the frame, it sequentially drives the pressure roller 24, the first rotary tillage roller 25 and the press roller 27 to rotate.

[0076] The second rotary tiller 28 has a sixth rotating shaft 18 at both ends. As the driving device moves along the land to be tilled, the second rotary tiller 28 comes into contact with the ground and rotates automatically under the influence of friction and the driving device during the friction with the ground.

[0077] The power transmission rod 19 mainly consists of three angle gearboxes, two drive shafts, and two continuously variable transmissions (CVTs). One CVT is used to adjust the discharge speed of the fertilizer box 41, and the other CVT is used to adjust the discharge speed of the first type of box 42 and the second type of box 43. The three angle gearboxes are respectively connected to the two CVTs and the sixth rotating shaft 18, while the two drive shafts are used to connect the three angle gearboxes in series.

[0078] In practical applications, as the drive equipment moves along the land to be cultivated with the frame, the rotation of the second rotary tiller 28 is essentially driven by the power source, while the power transmission rod 19 is essentially a recovery of the power source. The recovered power source can then drive the continuously variable transmission at the fertilizer box 41, the first box 42, and the second box 43, thereby realizing energy recovery and power reuse, making the entire equipment more environmentally friendly.

[0079] Drive equipment is generally a machine head or other equipment that can move independently on farmland.

[0080] By setting up such a dual-type tiller, the land to be sown can be quickly and efficiently plowed, breaking up soil clods and applying fertilizer. After sowing, the soil is covered, completing the entire sowing process without the need for subsequent soil covering, saving costs and improving sowing efficiency.

[0081] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A strip-shaped furrow-pressing and depth-controlled sowing mechanism, characterized in that, include: The rotary tillage land forms a downward concave strip (51) pressing device, a seed metering device sows seeds (A) into the strip pressing device (51), a soil covering device covers the sown seeds (A) with soil, and a compactor compacts the land after soil covering; the pressing device, seed metering device, soil covering device and compactor are connected in sequence along the sowing operation direction of the rotary tillage land.

2. The strip-shaped furrow-pressing and depth-controlled sowing mechanism according to claim 1, characterized in that, The sowing mechanism is also provided with a second rotary tillage roller (28); the second rotary tillage roller (28) is provided with cleaving gears (281) at equal intervals along the axial direction; the cleaving gears (281) are used to cut out wounds on the soil surface after sowing and compaction for water to seep into the strip pressure belt (51).

3. The strip-shaped furrow-pressing and depth-controlled sowing mechanism according to claim 2, characterized in that, The pressing device includes a pressing roller (24) rotatably connected to the sowing mechanism; the pressing roller (24) is provided with pressing wheels (241) at equal intervals along the axial direction; when the sowing mechanism moves, the pressing roller (24) rotates and presses down on the land after it has been tilled by the rotary tillage mechanism, forming a land surface pressed by the pressing roller (24) and a strip-shaped pressing belt (51) formed by the pressing wheels (241).

4. The strip-shaped furrow-pressing and depth-controlled sowing mechanism according to claim 1, characterized in that, There are two seed metering devices, and the seed metering port of each seed metering device is respectively connected to the Y-shaped seed outlet channel on the sowing mechanism. At least one of the seed metering devices is detachably connected to the sowing mechanism.

5. The strip-shaped furrow-pressing and depth-controlled sowing mechanism according to claim 3, characterized in that, The axial section of the pressure roller (241) is trapezoidal; the height of the trapezoid is 10-100 mm.

6. The strip-shaped furrow-pressing and depth-controlled sowing mechanism according to claim 3, characterized in that, The pressing device is located in front of the pressing roller (24) and is also provided with a ditching scraper (23) for leveling the surface soil of the land after rotary tillage. The ditching scraper (23) is provided with scraper teeth (231). The scraper teeth (231) are aligned with the pressing roller (241) along the direction of the sowing mechanism and are used to open a pre-planting ditch on the leveled soil surface for the pressing roller (241) to press and form a strip pressing belt (51).

7. The strip-shaped furrow-pressing and depth-controlled sowing mechanism according to claim 3, 5, or 6, characterized in that, The soil covering device includes a first rotary tillage roller (25), a soil covering scraper (26), and a pressing roller (27). The first rotary tillage roller (25) is provided with crushing gears (251) at equal intervals along the axial direction, which are used to rotary tillage and break up the topsoil between adjacent strip pressing belts (51). The soil covering scraper (26) is located behind the first rotary tillage roller (25) and is used to scrape the broken soil on both sides of the top of the strip pressing belt (51) into the strip pressing belt (51). The pressing roller (27) is located behind the soil covering scraper (26) and is used to press and level the land again after it has been leveled by the soil covering scraper (26).

8. The strip-shaped furrow-pressing and depth-controlled sowing mechanism according to claim 7, characterized in that, The first rotary tillage roller (25) has two or more crushing gears (251) as a group, and each two groups of crushing gears (251) are symmetrically arranged in the circumferential direction of the first rotary tillage roller (25); the crushing gears (251) are rotatably connected to the first rotary tillage roller (25).

9. The strip-shaped furrow-pressing and depth-controlled sowing mechanism according to claim 8, characterized in that, The seed metering device includes a first type box (42) and a second type box (43); the outlets of the first type box (42) and the second type box (43) are both located between the pressure roller (24) and the first rotary tillage roller (25), and are used to sprinkle seeds (A) at the bottom of the strip pressure belt (51).

10. A compound tillage and seeding machine, comprising the strip-shaped furrow pressing and depth-controlled seeding mechanism as described in any one of claims 1-9, characterized in that, It also includes the tiller body; a rotary tillage mechanism for turning and loosening the soil to be cultivated; the rotary tillage mechanism is connected to the tiller body, the seeding mechanism and the rotary tillage mechanism are separate, and the seeding mechanism is connected to the tail of the rotary tillage mechanism.

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