CN114766100A - Novel vertical rotary coulter and vertical rotary cultivator - Google Patents
Novel vertical rotary coulter and vertical rotary cultivator Download PDFInfo
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- CN114766100A CN114766100A CN202210463177.XA CN202210463177A CN114766100A CN 114766100 A CN114766100 A CN 114766100A CN 202210463177 A CN202210463177 A CN 202210463177A CN 114766100 A CN114766100 A CN 114766100A
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- rotary
- rotary tillage
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- cutter body
- ploughing
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- 238000003971 tillage Methods 0.000 claims abstract description 127
- 239000002689 soil Substances 0.000 claims abstract description 57
- 230000007704 transition Effects 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 7
- 230000008901 benefit Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 230000035784 germination Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004720 fertilization Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000009331 sowing Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
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Classifications
-
- 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
- A01B33/00—Tilling implements with rotary driven tools, e.g. in combination with fertiliser distributors or seeders, with grubbing chains, with sloping axles, with driven discs
- A01B33/08—Tools; Details, e.g. adaptations of transmissions or gearings
- A01B33/10—Structural or functional features of the tools ; Theoretical aspects of the cutting action
- A01B33/106—Structural or functional features of the tools ; Theoretical aspects of the cutting action the rotating shaft being oriented vertically or steeply inclined
-
- 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
- A01B33/00—Tilling implements with rotary driven tools, e.g. in combination with fertiliser distributors or seeders, with grubbing chains, with sloping axles, with driven discs
- A01B33/06—Tilling implements with rotary driven tools, e.g. in combination with fertiliser distributors or seeders, with grubbing chains, with sloping axles, with driven discs with tools on vertical or steeply-inclined shaft
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Soil Working Implements (AREA)
Abstract
The invention discloses a novel vertical rotary coulter and a vertical rotary cultivator; the novel vertical rotary plough coulter comprises a rotary tillage rotary cutter holder rotatably mounted on a vertical rotary cultivator, at least two rotary tillage cutter bodies are mounted on the periphery of the bottom end of the rotary tillage rotary cutter holder, the rotary tillage cutter bodies are of an integrally formed structure, a horizontal rotary tillage cutter mounting part is arranged at the top end of each rotary tillage cutter body, the rotary tillage cutter mounting part is detachably mounted on the rotary tillage rotary cutter holder, shallow ploughing deep cutter bodies for carrying out rotary tillage on shallow soil extend downwards from the outer ends of the rotary tillage cutter mounting parts, transitional ploughing deep cutter bodies are obliquely extended outwards and downwards from the lower parts of the shallow ploughing deep cutter bodies, deep ploughing deep cutter bodies for carrying out rotary tillage on deep soil are extended downwards from the lower parts of the transitional ploughing deep cutter bodies, and ploughing layer sections formed by the shallow ploughing deep cutter bodies, the transitional deep ploughing deep cutter bodies and the deep ploughing deep cutter bodies are narrow at the top and wide at the bottom; the invention can form strip-type narrow row rotary tillage with narrow top and wide bottom, and has the advantages of low power consumption, small soil moving amount, strong water retention property and the like.
Description
Technical Field
The invention relates to the technical field of rotary tillage cutter bodies, in particular to a novel vertical rotary coulter and a vertical rotary cultivator comprising the same.
Background
According to the downward growth of the root system of the later-stage crops and the distribution form of the approximately umbrella-shaped root system, a main stem and a part of root system growth area which correspond to a soil layer of 0-5 cm are narrow in transverse width and generally between 5-8 cm, and the soil layer can be treated in a square mode according to the transverse section. 5-10 cm soil layers are in the stage that roots grow downwards, the section of each soil layer root is approximately circular, meanwhile, the larger the growth area corresponding to the root from the 5cm to the 10cm soil layer section is, the larger the slope increase is shown on the whole, and the soil layer can be processed in a trapezoidal mode according to the cross section. The root system of the soil layer below 10cm is vertically downward, the transition is not obvious, and the soil layer can be processed in a square mode according to the cross section. And (4) combining the above steps to form a small square-ladder-large square 0-20 cm plough layer section scheme.
The distribution of the plough layer is mainly determined by the rotary tillage characteristics of a rotary cultivator, which is a driving type soil tillage machine taking rotary cutter teeth as working parts and is also called a rotary cultivator. The rotary cultivator blade shaft is divided into a horizontal shaft type and a vertical shaft type according to the configuration mode of the rotary cultivator blade shaft, namely a horizontal rotary cultivator and a vertical rotary cultivator. The working part of the horizontal rotary cultivator rotates around a horizontal shaft which is vertical to the advancing direction of the unit to cut soil, and the rotary tillage depth is shallow, so that shallow rotary tillage is realized; the vertical rotary tillage working part cuts soil in a rotating way around an axis which is vertical to or inclined to the ground, and the rotary tillage depth is larger because the rotary tillage cutter body is deeper, so that shallow and deep rotary tillage is realized. However, the equal right angle of present vertical rotary plow cutter body founds the sword, the rotary tillage width in upper rotary tillage district and lower floor's rotary tillage district is the same, for the operation of full width rotary tillage, because the crop needs be the less square rotary tillage district of rotary tillage width on the upper strata, the both sides in upper square rotary tillage district will produce the unnecessary rotary tillage district of non-action so, this unnecessary rotary tillage district not only can increase the power consumption of machines, and because the volume of moving soil is great, the soil pore in unnecessary rotary tillage district is great, still can increase the crop growth stage moisture and scatter and disappear, lead to the water retentivity poor, and be unfavorable for the suppression compaction of top soil.
Disclosure of Invention
The invention aims to solve the technical problem of providing a novel vertical rotary coulter and a vertical rotary cultivator, which have the advantages of simple structure, reasonable design, small soil moving amount and capability of forming strip-type narrow-row rotary cultivation with narrow top and wide bottom.
In order to solve the technical problem, the technical scheme of the invention is as follows: novel vertical rotary plow sword, including rotating the rotatory blade holder of rotary tillage of installing on vertical rotary cultivator, two at least rotary tillage cutter bodies are installed to the bottom periphery of the rotatory blade holder of rotary tillage, the rotary tillage cutter body is the integrated into one piece structure, the top of rotary tillage cutter body is equipped with horizontally rotary tillage sword installation department, rotary tillage sword installation department detachable installs on the rotatory blade holder of rotary tillage, the outer end downwardly extending of rotary tillage sword installation department is equipped with the shallow layer tilling dark cutter body that is used for carrying out the rotary tillage to shallow soil, the outside below slope extension in lower part of shallow layer tilling dark cutter body is equipped with the dark cutter body of transition tilling, the lower extension of the dark cutter body of transition tilling is equipped with the deep tilling dark cutter body that is used for carrying out the rotary tillage to deep soil, the deep cutter body of transition, the deep layer tilling section that the deep layer tilling dark cutter body of deep layer tilling formed is under the narrow width.
As the preferred technical scheme, two rotary tillage cutter bodies are oppositely arranged below the rotary tillage cutter holder.
Preferably, the soil cutting edge is arranged at the soil cutting side end of the rotary tillage cutter body, and extends downwards from the top end of the shallow tillage depth cutter body to the transition tillage depth cutter body and then continues to extend downwards to the bottom end of the deep tillage depth cutter body.
Preferably, the soil cutting edge is arranged at the soil cutting side end of the rotary tillage cutter body and extends from the top end to the bottom end of the deep tillage cutter body.
Preferably, the shallow ploughing deep cutter body is bent and extended from top to bottom inwards.
As a preferable technical scheme, the deep ploughing cutter body is bent and extended inwards from the top to the bottom.
As the preferred technical scheme, the vertical rotary cultivator comprises a gear box, and a novel vertical rotary coulter is installed at the output end of the bottom of the gear box.
According to the preferable technical scheme, the vertical rotary cultivator is arranged in front of the horizontal shallow rotary cultivator, and the rotary tillage depth of the horizontal shallow rotary cultivator corresponds to the rotary tillage depth of the shallow deep cultivating cutter body.
By adopting the technical proposal, the novel vertical rotary coulter comprises a rotary tillage rotary cutter holder which is rotatably arranged on the vertical rotary cultivator, at least two rotary tillage cutter bodies are arranged at the periphery of the bottom end of the rotary tillage rotary cutter holder, the rotary tillage cutter bodies are of an integrally formed structure, the top end of the rotary tillage cutter body is provided with a horizontal rotary tillage cutter mounting part which is detachably arranged on the rotary tillage rotary cutter holder, a shallow ploughing deep cutter body for carrying out rotary tillage on shallow soil is arranged at the outer end of the rotary tillage cutter mounting part in a downward extending manner, the lower part of the shallow ploughing deep cutter body is obliquely extended outwards and downwards to form a transitional ploughing deep cutter body, the lower part of the transitional ploughing deep cutter body is extended downwards to form a deep ploughing deep cutter body for rotary tillage of deep soil, the plough layer cross section formed by the shallow plough depth cutter body, the transition deep cutter body and the deep plough depth cutter body is narrow at the top and wide at the bottom; the beneficial effects of the invention are:
1. because the rotary blade of the device is not vertical as the prior art, but stepped, a square rotary tillage area is formed at the upper layer, rotary tillage is not generated at two sides of the square rotary tillage area, and a redundant rotary tillage area in the prior art is not generated, compared with the full rotary tillage operation in the prior art, the strip narrow row 'narrow upper narrow lower wide' rotary tillage of the device can treat soil as required, the power consumption is low, the soil moving amount is small, the operation speed is high, the soil is completely crushed, meanwhile, the water loss in the later operation growth stage can be reduced by the upper layer non-rotary tillage area, the water retention property is good, the device is beneficial to compacting the surface soil, increasing the contact between seeds and the soil, and is beneficial to realizing the agricultural measures of shallow seeding and normal deep fertilization;
2. this device cooperates with subsequent horizontal shallow layer rotary cultivator, and horizontal shallow layer rotary cultivator carries out the processing of ploughing carefully to top soil, can realize that seedbed soil is "thin on the top down thick" state, does benefit to crop seed early germination and later stage crop root system growth and development.
Drawings
The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention. Wherein:
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural view of a rotary tillage blade body according to an embodiment of the present invention;
FIG. 3 is a front view of a rotary tillage blade body according to an embodiment of the present invention;
FIG. 4 is a side view of a rotary tillage blade body according to an embodiment of the present invention;
FIG. 5 is a bottom view of a rotary tillage blade body according to an embodiment of the present invention;
FIG. 6 is a cross-sectional view of a rotary tillage formed by an embodiment of the present invention;
in the figure: 1-rotary tillage rotary cutter holder; 2-a rotary tillage cutter body; 3-a rotary blade mounting part; 4-ploughing the cutter body deeply in a shallow layer; 5-transition ploughing depth of the cutter body; 6-deep ploughing the cutter body.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings. In the following detailed description, certain exemplary embodiments of the present invention are described by way of illustration only. Needless to say, a person skilled in the art realizes that the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.
As shown in figures 1 to 6, the novel vertical rotary coulter comprises a rotary tillage rotary cutter holder 1 which is rotatably arranged on a vertical rotary cultivator, at least two rotary tillage cutter bodies 2 are arranged at the periphery of the bottom end of the rotary tillage rotary cutter holder 1, the rotary tillage cutter bodies 2 are of an integrally formed structure, the top end of the rotary tillage cutter body 2 is provided with a horizontal rotary tillage cutter mounting part 3, the rotary tillage cutter mounting part 3 is detachably mounted on the rotary tillage rotary cutter holder 1, a shallow ploughing deep cutter body 4 for carrying out rotary tillage on shallow soil is arranged at the outer end of the rotary tillage cutter mounting part 3 in a downward extending way, the lower part of the shallow ploughing deep cutter body 4 is obliquely extended outwards and downwards to form a transitional ploughing deep cutter body 5, the lower part of the transitional ploughing deep cutter body 5 is extended downwards to form a deep ploughing deep cutter body 6 for carrying out rotary tillage on deep soil, the plough layer cross section formed by the shallow plough depth cutter body 4, the transitional plough depth cutter body 5 and the deep plough depth cutter body 6 is narrow at the top and wide at the bottom.
In this embodiment, two rotary blade bodies 2 are oppositely arranged below the rotary blade holder 1.
The soil cutting edge is arranged at the soil cutting side end of the rotary tillage cutter body 2, and extends downwards from the top end of the shallow ploughing depth cutter body 4 to the transition ploughing depth cutter body 5 and then continues to extend downwards to the bottom end of the deep ploughing depth cutter body 6. Of course, the soil cutting blade may be only provided at the deep tilling blade body 6, that is, the soil cutting blade is provided at the soil cutting side end of the rotary tilling blade body 2 and extends from the top end to the bottom end of the deep tilling blade body 6, and at this time, the rotary tilling effects of the shallow tilling blade body 4 and the transitional tilling blade body 5 are not affected, so that the subsequent horizontal shallow rotary tiller can be used for further fine tilling.
Shallow ploughing dark cutter body 4 is used for adapting to the cutter rotation on the one hand by the upper self-down incurving extension setting for reduce and cut the native resistance, on the other hand avoids appearing a large amount of soil turned over phenomena.
The deep ploughing cutter body 6 is bent and extended inwards from top to bottom. On the one hand, the cutter is suitable for the rotation of the cutter and used for reducing the resistance of soil cutting, and on the other hand, the phenomenon of mass soil turning is avoided. But may also extend from the top end of the tool all the way down.
Vertical rotary cultivator, including the gear box, novel vertical coulter rotary tillage cutter body 2 is revolved to the output of gear box bottom portion is installed. The installation mode of the rotary tillage cutter body 2 of the novel vertical rotary coulter is the same as that of the vertical rotary coulter in the prior art, belongs to the common knowledge of ordinary engineering technicians in the field, and is not described again here.
The vertical rotary cultivator is arranged in front of the horizontal shallow rotary cultivator, and the rotary tillage depth of the horizontal shallow rotary cultivator corresponds to the rotary tillage depth of the shallow deep cutter body 4. In the embodiment, the vertical rotary coulter is used for realizing rough tillage, the horizontal shallow rotary cultivator is used for realizing fine tillage, and the vertical rotary plow and the horizontal shallow rotary cultivator are matched to realize a tillage layer with a fine upper part and a coarse lower part.
The working principle of the invention is as follows:
when the device carries out forward rotary tillage operation along with a machine tool, in the rotating process of a vertical rotary coulter, the shallow ploughing deep cutter body 4 forms an upper narrow rotary tillage area with a narrow width on a shallow soil layer, the deep ploughing deep cutter body 6 forms a lower wide rotary tillage area with a wide width on a deep soil layer, and the transitional ploughing deep cutter body 5 forms a middle transitional rotary tillage area between the shallow soil layer and the deep soil layer; in the cross section of the soil layer, the upper narrow rotary tillage area is a small square rotary tillage area (A in figure 6), the lower wide rotary tillage area is a large square rotary tillage area (B in figure 6), and the middle transitional rotary tillage area is a trapezoidal rotary tillage area (C in figure 6), so that a 'narrow upper part and wide lower part' tillage layer is realized, and the tillage layer corresponds to the distribution form of an approximate 'umbrella-shaped' root system; the small square rotary tillage area is used for sowing seeds, and the large square rotary tillage area is used for fertilizing and is used for meeting the requirements of early germination of the seeds and later growth and development of crop roots.
Because the rotary blade of the device is not vertical as the prior art, but stepped, a square rotary tillage area is formed on the upper layer, rotary tillage is not generated on two sides of the square rotary tillage area, and a redundant rotary tillage area (D in figure 6) in the prior art is not generated.
This device cooperates with subsequent horizontal shallow layer rotary cultivator, and horizontal shallow layer rotary cultivator carries out the processing of ploughing carefully to top soil, can realize that seedbed soil is "thin on the top down thick" state, does benefit to crop seed early germination and later stage crop root system growth and development.
The prior art does not have the structure, and the prior cutter does not have the functions, so that the device fills the blank in the industry.
The foregoing shows and describes the general principles, principal features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. Novel vertical rotary coulter, including rotating the rotatory blade holder of rotary tillage of installing on vertical rotary cultivator, two at least rotary tillage cutter bodies, its characterized in that are installed to the bottom periphery of the rotatory blade holder of rotary tillage: the rotary tillage cutter body is the integrated into one piece structure, the top of rotary tillage cutter body is equipped with horizontally rotary blade installation department, rotary blade installation department detachable installs on the rotary blade seat of rotary tillage, the outer end downwardly extending of rotary blade installation department is equipped with the shallow ploughing dark cutter body that is used for carrying out the rotary tillage to shallow soil, the outside below slope extension in lower part of shallow ploughing dark cutter body is equipped with the dark cutter body of transition ploughing, the below downwardly extending of the dark cutter body of transition ploughing is equipped with the deep ploughing dark cutter body that is used for carrying out the rotary tillage to deep soil, the plough layer cross-section that shallow ploughing dark cutter body, transition deep cutter body, deep ploughing dark cutter body formed is under the narrow width.
2. The novel vertical rotary plow blade as claimed in claim 1, wherein: two rotary tillage cutter bodies are oppositely arranged below the rotary tillage rotary cutter holder.
3. The novel vertical rotary plow blade as claimed in claim 1, wherein: the soil cutting side end of the rotary tillage cutter body is provided with a soil cutting blade, and the soil cutting blade extends downwards from the top end of the shallow ploughing depth cutter body to the transition ploughing depth cutter body and then continues to extend downwards to the bottom end of the deep ploughing depth cutter body.
4. The novel vertical rotary plow blade as claimed in claim 1, wherein: the soil cutting edge is arranged at the soil cutting side end of the rotary tillage cutter body and extends from the top end to the bottom end of the deep tillage cutter body.
5. The novel vertical rotary plow blade as claimed in claim 1, wherein: the shallow ploughing deep cutter body is bent and extended from top to bottom.
6. A novel vertical rotary plow blade as defined in any one of claims 1 to 5, wherein: the deep ploughing cutter body is bent and extended inwards from top to bottom.
7. Vertical rotary cultivator, its characterized in that: comprises a gear box, and the output end at the bottom of the gear box is provided with a novel vertical rotary coulter as claimed in any one of claims 1 to 6.
8. The vertical rotary cultivator of claim 7, wherein: the vertical rotary cultivator is arranged in front of the horizontal shallow rotary cultivator, and the rotary tillage depth of the horizontal shallow rotary cultivator corresponds to that of the shallow deep cultivating cutter body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210463177.XA CN114766100A (en) | 2022-04-28 | 2022-04-28 | Novel vertical rotary coulter and vertical rotary cultivator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210463177.XA CN114766100A (en) | 2022-04-28 | 2022-04-28 | Novel vertical rotary coulter and vertical rotary cultivator |
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| CN114766100A true CN114766100A (en) | 2022-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210463177.XA Pending CN114766100A (en) | 2022-04-28 | 2022-04-28 | Novel vertical rotary coulter and vertical rotary cultivator |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3625370A1 (en) * | 1986-07-26 | 1988-02-04 | Amazonen Werke Dreyer H | Ground-working machine |
| DE4002915A1 (en) * | 1990-02-01 | 1991-08-08 | Amazonen Werke Dreyer H | Centrifugal harrow implement - comprises transverse frame carrying centrifugal tools with tines side by side |
| EP0879552A1 (en) * | 1997-05-24 | 1998-11-25 | H. Niemeyer Söhne GmbH & Co. KG | Rotary harrow |
| CN2595132Y (en) * | 2002-12-13 | 2003-12-31 | 北京美科艺数码科技发展有限公司 | New environment protection agiculture tilling micro vertically rotary cultivator |
| CN107493696A (en) * | 2017-08-31 | 2017-12-22 | 德清菁英信息科技有限公司 | One kind is anti-to get deeply stuck in rotary cultivator |
| CN207720646U (en) * | 2015-06-12 | 2018-08-14 | 特斯阿格罗科技私人有限责任公司 | Rapid assembly device for powered harrow blade |
| CN112544146A (en) * | 2020-12-02 | 2021-03-26 | 农业农村部南京农业机械化研究所 | Soil preparation mechanism for wheat drill seeder suitable for sticky soil in rice stubble fields |
| CN112544147A (en) * | 2020-12-02 | 2021-03-26 | 农业农村部南京农业机械化研究所 | Wheat drill single body suitable for sticky soil in rice stubble field and planting method |
-
2022
- 2022-04-28 CN CN202210463177.XA patent/CN114766100A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3625370A1 (en) * | 1986-07-26 | 1988-02-04 | Amazonen Werke Dreyer H | Ground-working machine |
| DE4002915A1 (en) * | 1990-02-01 | 1991-08-08 | Amazonen Werke Dreyer H | Centrifugal harrow implement - comprises transverse frame carrying centrifugal tools with tines side by side |
| EP0879552A1 (en) * | 1997-05-24 | 1998-11-25 | H. Niemeyer Söhne GmbH & Co. KG | Rotary harrow |
| CN2595132Y (en) * | 2002-12-13 | 2003-12-31 | 北京美科艺数码科技发展有限公司 | New environment protection agiculture tilling micro vertically rotary cultivator |
| CN207720646U (en) * | 2015-06-12 | 2018-08-14 | 特斯阿格罗科技私人有限责任公司 | Rapid assembly device for powered harrow blade |
| CN107493696A (en) * | 2017-08-31 | 2017-12-22 | 德清菁英信息科技有限公司 | One kind is anti-to get deeply stuck in rotary cultivator |
| CN112544146A (en) * | 2020-12-02 | 2021-03-26 | 农业农村部南京农业机械化研究所 | Soil preparation mechanism for wheat drill seeder suitable for sticky soil in rice stubble fields |
| CN112544147A (en) * | 2020-12-02 | 2021-03-26 | 农业农村部南京农业机械化研究所 | Wheat drill single body suitable for sticky soil in rice stubble field and planting method |
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Application publication date: 20220722 |
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