A saline-alkali soil hole digging device and seeding machine

CN123023494APending Publication Date: 2026-11-03INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI +1
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202610777022.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-06-01
Publication Date
2026-11-03

AI Technical Summary

Technical Problem

Before and after sowing in saline-alkali land, the common method of digging water collection pits is time-consuming and labor-intensive, affecting sowing efficiency.

Method used

Design a hole-drilling device for saline-alkali land, including a power mechanism, a right-angle reducer, a transmission mechanism, and blades. The transmission mechanism transmits power to the right-angle reducer, which drives the blades to rotate, thereby achieving synchronized operation of sowing and hole drilling.

Benefits of technology

It improved the efficiency of sowing in saline-alkali land, realized the synchronous operation of sowing and hole digging, and reduced the time and labor required for manually digging water collection pits.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN123023494A_ABST
    Figure CN123023494A_ABST
Patent Text Reader

Abstract

The application relates to the technical field of agricultural machinery, and provides a saline-alkali soil hole digging device and a seeding machine. According to the saline-alkali soil hole digging device, the saline-alkali soil hole digging device can be applied to a seeding device, so that hole digging operation is implemented on the ground while the seeding device is running, the synchronization of seeding and hole digging is realized, and the efficiency is improved. When the saline-alkali soil hole digging device is applied to the seeding device, power can be obtained from a power mechanism in the seeding device, is transmitted to a right-angle reducer through a transmission mechanism, the input shaft end and the output shaft end of the right-angle reducer are perpendicular, and the right-angle reducer further converts the power transmission in the first direction into the output in the radial direction of a predetermined circle. According to the saline-alkali soil hole digging device, the right-angle reducer can drive the rotation of blades, and with the rotation of the first wall part and the second wall part, the plurality of blades pass above the ground in sequence, so that when the blades contact the ground, the hole digging operation is realized by the rotation of the blades.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This application relates to the field of agricultural machinery technology, and in particular to a hole-drilling device and a seeder for saline-alkali land. Background Technology

[0002] In agriculture, the management of saline-alkali land is crucial. Saline-alkali land is generally short of water, so water supply must be considered after sowing. A common practice is to dig water collection pits on the surface before and after sowing to collect rainwater, but this method is time-consuming and labor-intensive, affecting the overall sowing efficiency. Summary of the Invention

[0003] In view of this, this application provides a hole-drilling device and a seeder for saline-alkali land, with the aim of solving the above-mentioned technical problems to a certain extent.

[0004] This application provides a hole-drilling device for saline-alkali land, which is used in a sowing device. The sowing device includes a power mechanism for providing power to the sowing device. The hole-drilling device for saline-alkali land includes: A first wall portion and a second wall portion are disposed opposite to each other in a first direction; A plurality of right-angle reducers are arranged in a predetermined circle with an axis extending along a first direction as the axis. At least a portion of each right-angle reducer is located between a first wall and a second wall. Each right-angle reducer includes an input shaft end and an output shaft end, the input shaft end extending along the first direction and the output shaft end extending radially along the predetermined circle. A transmission mechanism is provided for transmission connection with the power mechanism. The transmission mechanism is also transmission connection to the input shaft end of each right-angle reducer to transmit the power output by the power mechanism to the right-angle reducer. Multiple blades are provided, each corresponding to one of the multiple right-angle reducers. The blades are disposed on the output shaft end of the corresponding right-angle reducer so as to be driven to rotate by the output shaft end. At least a portion of the blades is located outside the space between the first wall portion and the second wall portion.

[0005] Based on the above technical solutions, optionally, the blades are symmetrical about the axis of the corresponding output shaft end.

[0006] Optionally, based on any of the above technical solutions, the blade includes: The main body plate is connected to the corresponding output shaft end. The main body plate includes a first side and a second side opposite each other in a direction perpendicular to the axial direction of the output shaft end. The main body plate also includes a third side connecting the first side and the second side. The third side is located on the side of the main body plate away from the corresponding right-angle reducer. A conical portion is disposed on the third side portion, and the area of ​​the conical portion gradually decreases along the axial direction of the output shaft end as it moves away from the main body portion.

[0007] Based on any of the above technical solutions, optionally, a first fin and a second fin are disposed on the first side and the second side, respectively.

[0008] Optionally, based on any of the above technical solutions, the first fin and the second fin are located on the side of the main body portion closer to the corresponding right-angle reducer.

[0009] Based on any of the above technical solutions, optionally, both the first side and the second side are provided with a plurality of first teeth arranged sequentially along the axial direction of the output shaft end.

[0010] Based on any of the above technical solutions, optionally, the conical portion includes a fourth side and a fifth side opposite to each other in a direction perpendicular to the axial direction of the output shaft end, and a plurality of second teeth are provided on the fourth side and the fifth side respectively arranged sequentially along the fourth side and the fifth side.

[0011] Optionally, based on any of the above technical solutions, the blade includes: The main body plate is connected to the corresponding output shaft end, and the main body plate includes a first side and a second side opposite to each other in a direction perpendicular to the axial direction of the output shaft end; The first fin and the second fin are respectively disposed on the first side and the second side.

[0012] Optionally, based on any of the above technical solutions, the first fin and the second fin are located on the side of the main body portion closer to the corresponding right-angle reducer.

[0013] A second aspect of this application provides a seeder, the seeding device including the saline-alkali soil hole-drilling device as described above.

[0014] Thus, according to the saline-alkali land hole-drilling device provided in this application, the device can be applied to a sowing device, thereby performing hole-drilling operations on the ground while the sowing device is moving, achieving synchronization of sowing and hole-drilling, thereby improving efficiency. In an embodiment, when the saline-alkali land hole-drilling device is applied to a sowing device, it can obtain power from the power mechanism in the sowing device, which is then transmitted to a right-angle reducer via a transmission mechanism. Since the input shaft end and the output shaft end of the right-angle reducer are perpendicular, the right-angle reducer further converts the power transmission from the first direction into the radial output of a predetermined circle.

[0015] Therefore, according to the saline-alkali land drilling device provided in this application, the right-angle reducer can drive the blades to rotate. As the first wall and the second wall rotate, multiple blades pass over the ground in sequence, thereby realizing the drilling operation by rotating themselves when in contact with the ground.

[0016] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the transmission method of the saline-alkali land drilling device provided according to an embodiment of this application is shown.

[0019] Figure 2 A schematic diagram of a two-dimensional hole-drilling device for saline-alkali land provided according to an embodiment of this application is shown.

[0020] Figure 3 This is a schematic diagram of another two-dimensional view of the saline-alkali land drilling device provided according to an embodiment of this application.

[0021] Figure 4 This is a schematic diagram of another two-dimensional view of the saline-alkali land drilling device provided according to an embodiment of this application.

[0022] Figure 5 A schematic diagram of a three-dimensional view of a hole-drilling device for saline-alkali land provided according to an embodiment of this application is shown.

[0023] Figure 6 This is a schematic diagram of another three-dimensional view of the saline-alkali land drilling device provided according to an embodiment of this application.

[0024] 110 - First wall section; 120 - Second wall section; 200 - Right-angle reducer; 210 - Input shaft end; 220 - Output shaft end; 300 - Blade; 310 - Main body plate; 311 - First edge; 3111 - First tooth; 312 - Second edge; 320 - Conical plate; 321 - Fourth edge; 322 - Fifth edge; 323 - Second tooth; 331 - First fin; 332 - Second fin; 410 - First sprocket; 420 - Second sprocket; 430 - Third sprocket; 440 - Fourth sprocket; 450 - Fifth sprocket; 460 - Sixth sprocket; 470 - Seventh sprocket; 480 - Eighth sprocket; 490 - Ninth sprocket; 491 - Tenth sprocket; 500 - Intermediate reducer; 510 - First gear; 520 - Second gear; 610 - First shaft; 620 - Second shaft; 700 - Drive shaft. Detailed Implementation

[0025] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," 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 this application and 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 this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0028] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0029] The first aspect of this application provides a device for drilling holes in saline-alkali land, which will be described below in conjunction with... Figures 1 to 6 Describe in detail the structure and working principle of the hole-drilling device for saline-alkali land.

[0030] According to the embodiments of this application, the saline-alkali land hole-drilling device is used for a sowing device. The sowing device includes a power mechanism for providing power to the sowing device. The saline-alkali land hole-drilling device includes a first wall portion 110, a second wall portion 120, multiple right-angle reducers 200, a transmission mechanism, and multiple blades 300.

[0031] In one embodiment, the first wall portion 110 and the second wall portion 120 are disposed opposite to each other in a first direction.

[0032] In an embodiment, the aforementioned plurality of right-angle reducers 200 are arranged in a predetermined circle with an axis extending along a first direction as the axis. The right-angle reducers 200 are located between and connected to the first wall portion 110 and the second wall portion 120. The right-angle reducers 200 include an input shaft end 210 and an output shaft end 220. The input shaft end passes through a hole in the second wall portion, and the output shaft end 220 extends radially along the predetermined circle.

[0033] In this embodiment, the transmission mechanism is used to drive the power mechanism, and the transmission mechanism is driven to the input shaft end 210 of each right-angle reducer 200 to transmit the power output by the power mechanism to the right-angle reducer 200.

[0034] In the embodiment, the plurality of blades 300 are arranged in a one-to-one correspondence with the plurality of right-angle reducers 200. The blades 300 are disposed on the output shaft end 220 of the corresponding right-angle reducer 200 so as to be driven to rotate by the output shaft end 220. At least a portion of the blades 300 is located outside the space between the first wall portion 110 and the second wall portion 120.

[0035] Thus, according to the saline-alkali land hole-drilling device provided in the embodiments of this application, the saline-alkali land hole-drilling device can be applied to a sowing device, thereby performing hole-drilling operations on the ground while the sowing device is moving, realizing the synchronization of sowing and hole-drilling, thereby improving efficiency. In the embodiments, when the saline-alkali land hole-drilling device is applied to the sowing device, it can obtain power from the power mechanism in the sowing device, and transmit it to the right-angle reducer 200 through the transmission mechanism. Since the input shaft end 210 and the output shaft end 220 of the right-angle reducer 200 are perpendicular, the right-angle reducer 200 further converts the power transmission in the first direction into the radial output of a predetermined circle.

[0036] Therefore, according to the saline-alkali land drilling device provided in the embodiments of this application, the right-angle reducer 200 can drive the blades 300 to rotate. As the first wall portion 110 and the second wall portion 120 rotate, multiple blades 300 pass over the ground in sequence, thereby realizing the drilling operation by rotating themselves when in contact with the ground.

[0037] In an embodiment, such as Figure 1 As shown, Figure 1 The second wall portion 120 is omitted, and only the arrangement of the first wall portion 110 is shown. In the embodiment, the first wall portion 110 and the second wall portion 120 are also powered by the power mechanism of the seeding device to rotate. The first wall portion 110 is the driving member, and the second wall portion 120 is the driven member.

[0038] In this embodiment, both the first wall portion 110 and the second wall portion 120 can be circular plates. For example, the first direction mentioned above can be the axial direction of the two circular plates. In this embodiment, the saline-alkali land drilling device also includes a first rotating shaft 610, which passes through the first wall portion 110 and the second wall portion 120. The first wall portion 110 and the second wall portion 120 are rotatably connected to the first rotating shaft 610. For example, bearings are installed inside the through holes of the first wall portion 110 and the second wall portion 120 to ensure that the first wall portion 110 and the second wall portion 120 can rotate relative to the first rotating shaft 610.

[0039] In this embodiment, a power connection between the power mechanism and the first wall portion 110 can be established through a portion of the transmission mechanism. For example, power can be transmitted via a sprocket-chain-sprocket configuration. As an example, the transmission mechanism may include a seventh sprocket 470 fixedly connected to the first wall portion 110. The seventh sprocket 470 can be connected to the sixth sprocket 460 via a chain, and the seventh sprocket 470 can also be rotatably mounted to the first shaft 610.

[0040] See still Figure 1 , Figure 1The image shows two hole-drilling devices for saline-alkali land installed in a sowing apparatus. In one type of hole-drilling device, the first wall portion 110 obtains power from the drive shaft 700 of the power mechanism via a chain drive, i.e. Figure 1 The image shows a hole-drilling device for saline-alkali land on the right side. In another type of saline-alkali land hole-drilling device, the first wall portion 110 receives power from the drive shaft 700 of the power mechanism via two chain drives. Both types of saline-alkali land hole-drilling devices can be applied to seeding devices, and their number can be selectively set according to the width of the seeding device, without limitation. Figure 1 Each of the above is shown in one example. For instance, each type of pit-drilling device for saline-alkali land can be installed in two, three, or even more units.

[0041] In this embodiment, the saline-alkali land hole-drilling device, which obtains power through two chain drives, is longer in the direction of travel of the sowing device. This substantially changes the position of the holes drilled by the saline-alkali land hole-drilling device relative to the sowing device, thereby providing a more flexible hole-drilling method.

[0042] See still Figure 1 ,exist Figure 1 In the saline-alkali land drilling device that undergoes two chain drives, the sixth sprocket 460 and the fifth sprocket 450 are fixedly connected and can both be rotatably mounted on the second rotating shaft 620. The fifth sprocket 450 is then chain-connected to the fourth sprocket 440, which is fixedly mounted on the transmission shaft 700 and rotates synchronously with the transmission shaft 700.

[0043] In addition, Figure 3 In the process of cavitation and transposition via chain drive, although not marked, the structure is the same except that the second rotating shaft 620 and the corresponding secondary chain drive structure are not set. The difference is that the sixth sprocket 460 is directly fixed to the drive shaft 700 and rotates synchronously with the drive shaft 700.

[0044] In this embodiment, the drive shaft 700 can also obtain power from the power mechanism of the seeding device through a single chain drive, for example, by obtaining power from the power mechanism through an intermediate reducer 500, and outputting it to the drive shaft 700 through the first sprocket 410 and the second sprocket 420. The second sprocket 420 is fixedly connected to the drive shaft 700 so that they rotate synchronously, and the first sprocket 410 and the second sprocket 420 are connected by a chain drive.

[0045] In an embodiment, the side wall of the right-angle gearbox near the first wall portion 110 in the first direction can be fixedly connected to the first wall portion 110, and the side wall of the right-angle gearbox near the second wall portion 120 in the first direction can be provided with its input shaft end 210, which can be connected to some structure in the transmission mechanism, as will be described in the following description.

[0046] In this embodiment, the transmission mechanism may include a first gear 510 and a second gear 520, wherein the first gear 510 and the second gear 520 mesh with each other. The second gear 520 is fixedly connected to the input shaft end 210 of the right-angle reduction gearbox and rotates synchronously with the input shaft end 210. The first gear 510 is rotatably mounted on the first rotating shaft 610. As an example, the transmission mechanism may also include a tenth sprocket 491, which may be fixedly connected to the first gear 510 and rotate synchronously. The tenth sprocket 491 is also optionally mounted on the input shaft end 210. In this embodiment, the tenth sprocket 491 and the ninth sprocket 490 transmit power via chain drive.

[0047] In addition, the ninth sprocket 490 can be fixedly connected to the eighth sprocket 480 so that they rotate synchronously. The eighth sprocket 480 is connected to the third sprocket 430 fixed on the drive shaft 700 via chain drive.

[0048] Thus, according to the saline-alkali land drilling device provided in this application embodiment, the first wall portion 110 of the saline-alkali land drilling device can rotate, thereby driving multiple right-angle reducers 200 fixedly connected to the first wall portion 110 to rotate around the first rotating shaft 610. At the same time, the power transmitted by the sixth sprocket 460, the seventh sprocket 470, the first gear 510 and the second gear 520 causes the output end of each right-angle reducer 200 to rotate, causing the blade 300 to rotate, performing the above-mentioned sequential drilling operation.

[0049] According to the saline-alkali land drilling device provided in the embodiments of this application, the blade 300 is symmetrical about the axis of the corresponding output shaft end 220. The specific structure of the blade 300 will be further described below with reference to the accompanying drawings.

[0050] According to the saline-alkali land drilling device provided in the embodiments of this application, the blade 300 may include a main body blade portion 310 and a conical blade portion 320.

[0051] In one embodiment, the main body plate 310 can be connected to the corresponding output shaft end 220. The main body plate 310 may include a first side 311 and a second side 312 opposite each other in a direction perpendicular to the axial direction of the output shaft end 220. In another embodiment, the main body plate 310 may also include a third side connecting the first side 311 and the second side 312, the third side being located on the side of the main body plate 310 away from the corresponding right-angle reducer 200.

[0052] According to the saline-alkali land drilling device provided in the embodiments of this application, the main body 310 can be, for example, rectangular, the first side 311 and the second side 312 can be parallel sides, and the third side can be perpendicular to the first side 311 and the second side 312. ​As shown, the third side is not marked in the figure because the conical plate 320 and the main plate 310 can be integrally formed. Therefore, the boundary between the two, that is, the third side, is not prominent between the two. However, when the main plate 310 is drawn out separately, it can be considered that the third side exists.

[0053] In this embodiment, the conical section can be, for example, an isosceles trapezoid, with its two sides being the fourth side 321 and the fifth side 322, respectively. The wider bottom has the same dimensions as the third side, while the narrower bottom serves as the end of the conical section, facilitating soil excavation during the hole-drilling process.

[0054] In the embodiments, according to the hole-filling and transposition provided in the embodiments of this application, the blade 300 may further include a first fin 331 and a second fin 332. The first fin 331 and the second fin 332 may be respectively disposed on the first side portion 311 and the second side portion 312. As an example, the first fin 331 and the second fin 332 are located on the side of the main body portion 310 near the corresponding right-angle reducer 200.

[0055] According to the saline-alkali land drilling device provided in the embodiments of this application, a plurality of first teeth 3111 can be provided on the first side 311 and the second side 312, which are arranged sequentially along the axial direction of the output shaft end 220, thereby promoting the digging of the soil by the blade 300.

[0056] Furthermore, according to the saline-alkali land drilling device provided in the embodiments of this application, the fourth side 321 and the fifth side 322 of the cone-shaped portion 320 may also be provided with a plurality of second teeth 323 arranged sequentially along the fourth side 321 and the fifth side 322, thereby further promoting the digging of the blade 300 into the soil.

[0057] In the embodiment, as described above, the fourth sprocket, the fifth sprocket, the sixth sprocket, and the seventh sprocket constitute a transmission system that can reduce the rotational speed. The seventh sprocket is fixedly connected to the first wall, thereby driving the overall rotation of the saline-alkali land drilling device. The linear velocity of the rotation of the saline-alkali land drilling device should be close to the forward speed. The rotational speed of the saline-alkali land drilling device is 50~90 r / min.

[0058] Furthermore, the third, eighth, ninth, and tenth sprockets constitute a transmission system for increasing the rotational speed. The tenth sprocket is fixedly connected to the first gear and rotatably connected to the second wall, rotating relative to the second wall. The first gear meshes with the second gear, and the second gear is connected to the input shaft end of the right-angle reducer, thereby driving the output shaft of the right-angle reducer to rotate. The rotational speed of the output shaft is above 2000 r / min.

[0059] Furthermore, the hole-drilling device for saline-alkali land can rotate around the drive shaft, thereby improving the contouring effect.

[0060] Furthermore, blades are installed at the output end of the direct gearbox; the blades have teeth to reduce rotational resistance; the blades can be installed at an angle to improve the efficiency of soil removal.

[0061] According to a second aspect of the embodiments of this application, a seeder is provided, which includes the above-mentioned hole-drilling device for saline-alkali land and also has the above-mentioned beneficial effects, which will not be repeated here.

[0062] The above are merely preferred embodiments of this application and do not limit the scope of protection of this application. Any equivalent structural transformations made based on the innovative concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the scope of protection of this application.

Claims

1. A device for drilling holes in saline-alkali land, characterized in that, The saline-alkali land hole-drilling device is used for a sowing device, the sowing device including a power mechanism for providing power to the sowing device, the saline-alkali land hole-drilling device including: A first wall portion and a second wall portion are disposed opposite to each other in a first direction; A plurality of right-angle reducers are arranged in a predetermined circle with an axis extending along a first direction as the axis. The right-angle reducers are located between a first wall and a second wall and are fixedly connected to both. Each right-angle reducer includes an input shaft end and an output shaft end. The input shaft end passes through a hole in the second wall, and the output shaft end extends radially along the predetermined circle. A transmission mechanism is provided for transmission connection with the power mechanism. The transmission mechanism is also transmission connection to the input shaft end of each right-angle reducer to transmit the power output by the power mechanism to the right-angle reducer. Multiple blades are provided, each corresponding to one of the multiple right-angle reducers. The blades are disposed on the output shaft end of the corresponding right-angle reducer so as to be driven to rotate by the output shaft end. At least a portion of the blades is located outside the space between the first wall portion and the second wall portion.

2. The device for drilling holes in saline-alkali land according to claim 1, characterized in that, The saline-alkali land drilling device also includes a fourth sprocket, a fifth sprocket, a sixth sprocket, and a seventh sprocket. The fourth sprocket, the fifth sprocket, the sixth sprocket, and the seventh sprocket constitute a transmission system that can reduce the rotational speed. The seventh sprocket is fixedly connected to the first wall, thereby driving the overall rotation of the saline-alkali land drilling device. The linear velocity of the rotation of the saline-alkali land drilling device should be close to the forward speed. The rotational speed of the saline-alkali land drilling device is 50~90 r / min.

3. The device for drilling holes in saline-alkali land according to claim 1, characterized in that, The saline-alkali land drilling device also includes a third sprocket, an eighth sprocket, a ninth sprocket, and a tenth sprocket. The third sprocket, the eighth sprocket, the ninth sprocket, and the tenth sprocket constitute a transmission system for increasing the rotational speed. The tenth sprocket is fixedly connected to the first gear and rotatably connected to the second wall, rotating relative to the second wall. The first gear meshes with the second gear, and the second gear is connected to the input shaft end of the right-angle reducer, thereby driving the output shaft of the right-angle reducer to rotate. The rotational speed of the output shaft is above 2000 r / min.

4. The device for drilling holes in saline-alkali land according to claim 3, characterized in that, The hole-drilling device for saline-alkali land can rotate around the drive shaft to improve the contouring effect.

5. The device for drilling holes in saline-alkali land according to claim 3, characterized in that, The output end of the direct gearbox is equipped with blades; the blades have teeth to reduce rotational resistance. Its blades can be installed at an angle to improve the efficiency of soil removal.

6. A seeder, characterized in that, The seeder includes a hole-drilling device for saline-alkali land as described in any one of claims 1 to 5.