CN112616344A - No-tillage spread-seeding fertilizing seeder - Google Patents
No-tillage spread-seeding fertilizing seeder Download PDFInfo
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- CN112616344A CN112616344A CN202110012890.8A CN202110012890A CN112616344A CN 112616344 A CN112616344 A CN 112616344A CN 202110012890 A CN202110012890 A CN 202110012890A CN 112616344 A CN112616344 A CN 112616344A
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B49/00—Combined machines
- A01B49/04—Combinations of soil-working tools with non-soil-working tools, e.g. planting tools
- A01B49/06—Combinations of soil-working tools with non-soil-working tools, e.g. planting tools for sowing or fertilising
- A01B49/065—Combinations of soil-working tools with non-soil-working tools, e.g. planting tools for sowing or fertilising the soil-working tools being actively driven
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Abstract
The invention discloses a no-tillage spread-seeding fertilizing seeder, and relates to the technical field of seeders. The method comprises the following steps: the harrowing device comprises a plurality of harrows distributed along the width direction of the no-tillage seeding and fertilizing and seeding machine, and one end of each harrow close to the rear part of the no-tillage seeding and fertilizing and seeding machine inclines downwards in the direction from the front part to the rear part of the no-tillage seeding and fertilizing and seeding machine. One end of the harrow teeth of the harrow device, which is close to the rear part of the no-tillage spread-seeding fertilizing and seeding machine, extends into the ground for a certain length, so that the harrow teeth and the ground form a certain included angle. Along with no-tillage spread seeding fertilizing and seeding machine marchs, the rake teeth lie in subaerial part and ground can provide an extrusion force in order to crush the clod to the clod that lies in between the two to solved among the prior art no-tillage spread seeding fertilizing and seeding machine's harrow ground device and only can provide flat thrust to the clod, thereby it is not good to the clod crushing effect to level the not good problem of carding effect to ground.
Description
Technical Field
The invention relates to the technical field of seeders, in particular to a no-tillage spread-seeding fertilizing seeder.
Background
The no-tillage spread-seeding fertilizing seeder can replace the original steps of manual seeding, fertilizing, ploughing and the like by using machinery, is completed in one step, mainly solves the problems of insufficient labor force and labor cost in rural areas, and enlarges the agricultural planting area and the mechanization level. The no-tillage, spread seeding, fertilizing and seeding machine mainly comprises a frame, and a rotary tillage device, a seeding device, a harrowing device and a roller which are sequentially arranged on the frame from front to back, wherein the harrowing device comprises a plurality of harrow teeth arranged along the vertical direction. The vertical setting of harrow tooth of no-tillage spread seeding fertilizing and seeding machine among the prior art, during the use, the harrow tooth inserts ground and levelly and smoothly combs the soil surface to eliminate great clod, but no-tillage spread seeding fertilizing and seeding machine when pulling the operation by power machinery, the harrow tooth translation simultaneously, at the in-process of harrow tooth translation, can only form the power of flat push to the clod, it is not good to the crushing effect of clod. Therefore, how to solve the problem that the leveling and combing effect of the no-tillage seed and fertilizer drill on the ground is not good in the prior art is a technical problem which needs to be solved urgently by the technical personnel in the field.
Disclosure of Invention
In order to solve the technical problems, the invention provides a no-tillage spread-seeding fertilizing seeder with better leveling and carding effects.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a no-tillage spread-seeding fertilizing seeder, comprising: the harrowing device comprises a plurality of harrows distributed along the width direction of the no-tillage seed and fertilizer drill, and one end of each harrow, which is close to the rear part of the no-tillage seed and fertilizer drill, is downwards inclined in the direction from the front part to the rear part of the no-tillage seed and fertilizer drill.
Further, the device also comprises a pressing wheel mechanism, wherein the pressing wheel mechanism comprises a bracket which is connected with the rack in a sliding way, a rotating wheel which is connected with the bracket in a rotating way, and an adjusting mechanism which is used for adjusting the height of the bracket.
Further, adjustment mechanism include along vertical direction extend and set up in cylinder on the frame, the cylinder body of cylinder with the frame is connected, the piston rod of cylinder with the leg joint is in order to drive the support displacement.
Further, the air bag is used for providing power for the air cylinder, the air bag is connected with the air cylinder through a pipeline, and an electromagnetic valve is arranged on the pipeline between the air bag and the air cylinder.
The rotary cultivator comprises a cutter shaft, blades and a reduction box, wherein the two ends of the cutter shaft are rotatably connected with a rack, the blades are arranged on the cutter shaft, the reduction box is in transmission connection with the middle of the cutter shaft and is used for driving the cutter shaft to rotate, the blades comprise two first blades, the two first blades are distributed on two sides of the reduction box and are close to the reduction box, the middle of each first blade is sleeved on the cutter shaft, and the two ends of each first blade are bent by 90 degrees towards the direction close to the reduction box.
Furthermore, the blades comprise two second blades, the two second blades are distributed on two sides of the reduction gearbox and are respectively located at two ends of the cutter shaft, the middle of each second blade is sleeved on the cutter shaft, and two ends of each second blade are bent by 90 degrees towards the direction close to the reduction gearbox.
Furthermore, the blades comprise a plurality of third blades, the middle parts of the plurality of third blades are sleeved on the cutter shaft, one end of each third blade bends 90 degrees towards the direction close to the reduction gearbox, and the other end bends 90 degrees towards the direction far away from the reduction gearbox.
Further, the sowing and fertilizing device is arranged on the rack and comprises a seed box, a fertilizer box, a sowing pipe with a first end communicated with the seed box and a sowing pipe with a first end communicated with the fertilizer box, wherein a second end of the sowing pipe is communicated with the front of the rotary tillage device, a sowing angle iron is arranged at a second end of the sowing pipe and comprises an upper plate and a lower plate, the first end of the upper plate and the first end of the lower plate are connected to form a tip, the tip faces the front part of the no-tillage spread-seed and fertilizer-seed drill, the upper plate inclines upwards and the lower plate inclines downwards from the front part to the rear part of the rack, and a pipe orifice of the second end of the sowing pipe penetrates through the upper plate and extends into a position between the upper plate and the lower plate.
Furthermore, a digging-out device for digging out the straws in the soil is arranged at the rear of the seeding and fertilizing device on the rack, the digging-out device comprises a rotating shaft which is rotatably connected with the rack and a plurality of knife boards which are arranged on the rotating shaft, and each knife board is arranged along the radial extension of the rotating shaft.
Further, still include with the cylinder that the frame rotationally is connected, be provided with a plurality of on the cylinder and follow the puncture ring that the cylinder axial distributes, each puncture ring all includes a plurality of edge the cylinder circumference distributes and consecutive triangle hollow bulge.
Compared with the prior art, the invention has the following technical effects:
the invention relates to a no-tillage spread-seeding fertilizing seeder, comprising: the harrowing device comprises a plurality of harrows distributed along the width direction of the no-tillage seeding and fertilizing and seeding machine, and one end of each harrow close to the rear part of the no-tillage seeding and fertilizing and seeding machine inclines downwards in the direction from the front part to the rear part of the no-tillage seeding and fertilizing and seeding machine. When in use, a traction machine, such as a tractor, is connected with the front part of the no-tillage seeding and fertilizing and seeding machine so as to drive the no-tillage seeding and fertilizing and seeding machine to move forward. One end of the harrow teeth of the harrow device, which is close to the rear part of the no-tillage spread-seeding fertilizing and seeding machine, extends into the ground for a certain length, so that the harrow teeth and the ground form a certain included angle. Along with no-tillage spread seeding fertilizing and seeding machine marchs, the rake teeth lie in subaerial part and ground can provide an extrusion force in order to crush the clod to the clod that lies in between the two to solved among the prior art no-tillage spread seeding fertilizing and seeding machine's harrow ground device and only can provide flat thrust to the clod, thereby it is not good to the clod crushing effect to level the not good problem of carding effect to ground.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural view of a no-tillage seed and fertilizer drill in an embodiment of the invention;
fig. 2 is a schematic structural diagram of a harrowing device according to an embodiment of the present invention;
fig. 3 is an isometric view of the raking device of fig. 2;
FIG. 4 is a schematic view of a rotary cultivator attachment in accordance with an embodiment of the present invention;
FIG. 5 is a schematic structural view of a drum according to an embodiment of the present invention;
FIG. 6 is a schematic view showing the formation of a soil bank by blades of a prior art no-tillage seed and fertilizer drill;
FIG. 7 is a schematic view of a cutting edge angle of a first insert in an embodiment of the present invention;
FIG. 8 is a schematic structural diagram of a seeding pipe in an embodiment of the present invention;
FIG. 9 is a front view of FIG. 8;
fig. 10 is a schematic structural diagram of a ripping apparatus according to an embodiment of the present invention;
fig. 11 is a perspective view of the first blade of fig. 7.
Description of reference numerals: 1. a frame; 2. rake teeth; 3. a support; 4. a rotating wheel; 5. a cylinder; 6. a cutter shaft; 7. a reduction gearbox; 8. a first blade; 9. a second blade; 10. a third blade; 11. a drum; 12. a triangular hollow bulge; 13. a seed box; 14. fertilizer box; 15. seeding a pipe; 16. sowing a fertilizer pipe; 17. sowing angle iron; 18. an upper plate; 19. a lower plate; 20. a rotating shaft; 21. a knife board.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1-11, the no-tillage seed and fertilizer drill provided by the embodiment of the invention comprises a frame 1 and a harrowing device arranged on the frame 1. The harrowing device comprises a plurality of harrow teeth 2 distributed along the width direction of the no-tillage seed and fertilizer drill, in fig. 1, the width direction of the no-tillage seed and fertilizer drill is the direction vertical to the paper surface. Referring to fig. 1-2, one end of each rake tooth 2 near the rear of the no-tillage seeder-with-fertilizer is inclined downward in the direction from the front to the rear of the no-tillage seeder-with-fertilizer. When the no-tillage seeder combined with spreading and fertilizing is placed in the posture shown in fig. 1, the front part of the no-tillage seeder combined with spreading and fertilizing is on the left side in fig. 1, and the rear part of the no-tillage seeder combined with spreading and fertilizing is on the right side in fig. 1. When in use, a traction machine, such as a tractor, is connected with the front part of the no-tillage seeding and fertilizing and seeding machine so as to drive the no-tillage seeding and fertilizing and seeding machine to move forward. Referring to fig. 2, one end of the rake teeth 2 of the raking device, which is close to the rear part of the no-tillage seed and fertilizer drill, extends into the ground for a certain length, so that the rake teeth 2 form an included angle with the ground. Along with no-tillage spread seeding fertilizing and seeding machine marchs, rake teeth 2 are located subaerial part and ground can provide an extrusion force in order to crush the clod to the clod that is located between the two to the raking device of having solved no-tillage spread seeding fertilizing and seeding machine among the prior art can only provide flat thrust to the clod, thereby it is not good to the clod crushing effect to level the problem of combing the effect not good to ground.
Referring to fig. 1, in some implementations, the no-till fertilizing and seeding machine further includes a pressing wheel mechanism. The pinch roller mechanism comprises a bracket 3 connected with the frame 1 in a sliding way, a rotating wheel 4 connected with the bracket 3 in a rotating way and an adjusting mechanism used for adjusting the height of the bracket 3. Optionally, the support 3 includes square pipe, and the frame 1 is provided with a square sleeve for allowing the square pipe to pass through and slide, and the square sleeve extends along the vertical direction.
Referring to fig. 1, in some embodiments, the adjusting mechanism includes an air cylinder 5 extending in a vertical direction and disposed on the frame 1, a cylinder body of the air cylinder 5 is connected to the frame 1, and a piston rod of the air cylinder 5 is connected to the bracket 3 to drive the bracket 3 to displace. When the piston rod stretches out, the support 3 drives the idler wheel to move downwards, and when the piston rod retracts, the support 3 drives the idler wheel to move upwards, so that the effect of adjusting the seeding depth is achieved. Alternatively, the cylinder body of the cylinder 5 may be connected to the frame 1 through a mount.
In some embodiments, the no-tillage, spread-seeding, fertilizing and seeding machine further comprises an air bag for providing power for the air cylinder 5, the air bag is connected with the air cylinder 5 through a pipeline, and an electromagnetic valve is arranged on the pipeline between the air bag and the air cylinder 5. The solenoid valves are, for example, electromagnetic directional valves so that the air bags can communicate with the rod chamber and the rodless chamber of the cylinder 5, respectively. The air bag has simple structure and can conveniently provide power for the air cylinder 5.
Referring to fig. 1 and 4, in some embodiments, the no-tillage seed and fertilizer drill further comprises a rotary tillage device. The rotary tillage device comprises a cutter shaft 6, blades and a reduction box 7, wherein two ends of the cutter shaft 6 are rotatably connected with the frame 1, the blades are arranged on the cutter shaft 6, the reduction box 7 is in transmission connection with the middle of the cutter shaft 6 and is used for driving the cutter shaft 6 to rotate, and an input shaft is arranged on the reduction box 7 and is in transmission connection with an output shaft of a tractor so as to drive the cutter shaft 6 to rotate.
Referring to fig. 4, in some embodiments, the blades include two first blades 8, the two first blades 8 are distributed on two sides of the reduction box 7 and are close to the reduction box 7, the middle part of each first blade 8 is sleeved on the cutter shaft 6, and two ends of each first blade 8 are bent by 90 degrees towards the direction close to the reduction box 7. So set up, the both ends of two first blades 8 of reducing gear box 7 both sides all are to the direction bending that is close to reducing gear box 7, can avoid because stopping of reducing gear box 7, lead to being located the unable problem by the rotary tillage in ground of reducing gear box 7 below. In a specific use process, the width of soil below the reduction gearbox 7 is small, generally 7-8 centimeters, the two first blades 8 can be used for erecting the soil below the reduction gearbox 7 so as to complete rotary tillage of the ground below the reduction gearbox 7, and in order to improve the soil erecting effect, referring to fig. 7, optionally, the cutting angle a of the first blades is 45 degrees. Referring to fig. 7, the cutting angle is the angle between the curved portion of the end of the first blade 8 and the normal direction of the first blade when rotating, and the larger the cutting angle a, the larger the contact surface with the soil during the rotation of the curved portion of the first blade, and the farther the soil is thrown.
Referring to fig. 4, in some embodiments, the blades include two second blades 9, the two second blades 9 are distributed on two sides of the reduction box 7 and are respectively located at two ends of the cutter shaft 6, the middle of each second blade 9 is sleeved on the cutter shaft 6, and two ends of each second blade 9 are bent by 90 degrees towards the direction close to the reduction box 7. Referring to fig. 6, in the prior art, the middle of the blade is sleeved on the blade shaft 6, the first end is bent towards the direction close to the reduction gearbox 7, the second end is bent away from the reduction gearbox 7, soil raised by the second end is thrown onto the inner wall of the frame 1, and a soil bank is formed between the frame 1 and the blade. In the embodiment, both ends of the second blade 9 are bent towards the direction close to the reduction gearbox 7, and soil raised by the second blade 9 cannot be thrown onto the inner wall of the frame 1, so that a soil bank cannot be formed behind the traveling direction of the no-tillage and spread-seeding combined seed and fertilizer drill. Alternatively, the cutting angle of the second blade 9 is 5 ° so that the second blade is more soil throwing and can further avoid formation of a coffer dam.
In some embodiments, the blades include a plurality of third blades 10, the middle parts of the plurality of third blades 10 are sleeved on the cutter shaft 6, one end of each third blade 10 bends 90 degrees towards the direction close to the reduction gearbox 7, and the other end bends 90 degrees towards the direction far away from the reduction gearbox 7. Optionally, the cutting angle of the third blade is 25 °.
Referring to fig. 1, 8 and 9, in some embodiments, the no-tillage fertilizing and seeding machine further comprises a seeding and fertilizing device arranged on the frame 1. The seeding and fertilizing device comprises a seed box 13, a fertilizer box 14, a seeding pipe 15 with a first end communicated with the seed box 13 and a fertilizer sowing pipe 16 with a first end communicated with the fertilizer box. The seeding pipe and the fertilizer sowing pipe are distributed in a plurality of numbers and are respectively distributed along the width direction of the rack. The second end of the fertilizer sowing pipe is communicated with the front of the rotary tillage device, and the fertilizer drops on the ground from the second end of the fertilizer sowing pipe and is stirred with the soil through the rotary tillage device, so that the fertilizer is sown more uniformly. The second end of the sowing pipe is provided with a sowing angle iron. The sowing angle 17 comprises an upper plate 18 and a lower plate 19, the first end of the upper plate 18 and the first end of the lower plate 19 being connected to form a tip, and the tip being directed towards the front of the frame, and the upper plate 18 being inclined upwards and the lower plate 19 being inclined downwards in the direction from the front of the frame to the rear of the frame. A second end nozzle of the seeding tube 15 extends through the upper plate and into between the upper plate and the lower plate. So set up, the pointed end of seeding angle bar 17 can puncture in soil, and the seed falls to the hypoplastron from seeding pipe second end on, through striking with the hypoplastron, can spread in soil more evenly. Alternatively, the angle between the upper plate and the lower plate may be 45 ° and the angle between the upper plate and the ground plane may be 35 °.
Referring to fig. 1 and 10, in some embodiments, a digging device for digging out the straw in the soil is arranged on the rack behind the seeding and fertilizing device. The pulling-out device comprises a rotating shaft 20 rotatably connected with the rack and a plurality of cutting boards 21 arranged on the rotating shaft, and each cutting board 21 extends along the radial direction of the rotating shaft. When the no-tillage spread-seeding fertilizing seeder is placed according to the posture shown in figure 1, the rotating shaft 20 in the working state rotates clockwise, the cutting board 21 can take out the straws in the soil when lifted up from the soil, so that the straws in the soil can be taken out, air is prevented from being reserved in the soil, the soil can be compacted, the seeds convenient for sprouting are covered on the surface of the soil, the moisture evaporation can be prevented, and the water-saving effect is achieved.
Referring to fig. 1 and 5, in some embodiments, the no-tillage seed and fertilizer drill further includes a roller 11 rotatably connected to the frame 1, the roller 11 is provided with a plurality of penetrating rings axially distributed along the roller 11, and each penetrating ring includes a plurality of triangular hollow protrusions 12 circumferentially distributed along the roller 11 and connected in sequence. Alternatively, each triangular hollow protrusion 12 is connected to the drum 11 by welding. So set up, make the loose soil surface under the real and produce the recess, be favorable to the seeping of ponding to the soft soil in lower part after the seeding, reduced soil surface layer ponding skinning, improved the rate of emergence after the rain.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (10)
1. A no-tillage spread-seeding fertilizing seeder, characterized by comprising: the harrowing device comprises a plurality of harrows distributed along the width direction of the no-tillage seed and fertilizer drill, and one end of each harrow, which is close to the rear part of the no-tillage seed and fertilizer drill, is downwards inclined in the direction from the front part to the rear part of the no-tillage seed and fertilizer drill.
2. The no-tillage fertilizing and seeding machine as claimed in claim 1, further comprising a pressing wheel mechanism including a carriage slidably connected with the frame, a wheel rotatably connected with the carriage, and an adjusting mechanism for adjusting the height of the carriage.
3. The no-tillage seed and fertilizer drill of claim 2, wherein the adjusting mechanism comprises a cylinder extending in a vertical direction and disposed on the frame, a cylinder body of the cylinder is connected with the frame, and a piston rod of the cylinder is connected with the bracket to drive the bracket to displace.
4. The no-tillage seed and fertilizer drill of claim 3, further comprising an air bag for powering the air cylinder, wherein the air bag is connected with the air cylinder through a pipeline, and a solenoid valve is arranged on the pipeline between the air bag and the air cylinder.
5. The no-tillage seed and fertilizer drill of claim 1, further comprising a rotary tillage device, wherein the rotary tillage device comprises a cutter shaft with two ends rotatably connected with the frame, blades arranged on the cutter shaft and a reduction gearbox in transmission connection with the middle part of the cutter shaft for driving the cutter shaft to rotate, the blades comprise two first blades, the two first blades are distributed on two sides of the reduction gearbox and are close to the reduction gearbox, the middle part of each first blade is sleeved on the cutter shaft, and two ends of each first blade are bent by 90 degrees towards the direction close to the reduction gearbox.
6. The no-tillage seed and fertilizer drill of claim 5, wherein the blades comprise two second blades, the two second blades are distributed on two sides of the reduction gearbox and are respectively positioned at two ends of the cutter shaft, the middle part of each second blade is sleeved on the cutter shaft, and two ends of each second blade are bent by 90 degrees towards the direction close to the reduction gearbox.
7. The no-tillage seed and fertilizer drill of claim 5, wherein the blades comprise a plurality of third blades, the middle parts of the plurality of third blades are sleeved on the cutter shaft, one end of each third blade is bent by 90 degrees towards the direction close to the reduction gearbox, and the other end of each third blade is bent by 90 degrees towards the direction far away from the reduction gearbox.
8. The no-tillage seed and fertilizer drill of claim 5, further comprising a seed and fertilizer device disposed on the frame, wherein the seed and fertilizer device comprises a seed box, a fertilizer box, a seed tube with a first end communicated with the seed box and a seed tube with a first end communicated with the fertilizer box, the second end of the seed tube opens into the front of the rotary cultivator, the second end of the seed tube is provided with a seed angle iron, the seed angle iron comprises an upper plate and a lower plate, the first end of the upper plate and the first end of the lower plate are connected to form a tip, the tip faces the front of the no-tillage seed and fertilizer drill, the upper plate inclines upwards and the lower plate inclines downwards from the front to the rear of the frame, and the second end pipe orifice of the seed tube penetrates through the upper plate and extends between the upper plate and the lower plate.
9. The no-tillage seed and fertilizer drill of claim 8, wherein a raking device for raking out straws in soil is arranged on the frame behind the seeding and fertilizer applying device, the raking device comprises a rotating shaft rotatably connected with the frame and a plurality of knife boards arranged on the rotating shaft, and each knife board extends along the radial direction of the rotating shaft.
10. The no-tillage seed and fertilizer drill of claim 5, further comprising a roller rotatably connected with the frame, wherein the roller is provided with a plurality of penetrating rings axially distributed along the roller, and each penetrating ring comprises a plurality of triangular hollow protrusions circumferentially distributed along the roller and sequentially connected with each other.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110012890.8A CN112616344A (en) | 2021-01-06 | 2021-01-06 | No-tillage spread-seeding fertilizing seeder |
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| CN202110012890.8A CN112616344A (en) | 2021-01-06 | 2021-01-06 | No-tillage spread-seeding fertilizing seeder |
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| CN205546455U (en) * | 2016-04-11 | 2016-09-07 | 中国农业科学院草原研究所 | Suppressing mechanism and alfalfa grass seeder |
| CN107135682A (en) * | 2017-07-03 | 2017-09-08 | 江苏新岛机械有限公司 | It is a kind of to realize the colter arrangement mode that rotary tiller shaft sinks |
| CN206909098U (en) * | 2017-09-14 | 2018-01-23 | 内蒙古自治区农牧业科学院 | A kind of new dental formulas plough of no-tillage seeding machine |
| CN108718569A (en) * | 2018-08-01 | 2018-11-02 | 农业部南京农业机械化研究所 | A kind of stalk crushes collection in the ranks and covers no-tillage seeding machine |
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