CN109315153A - A kind of rice threshing device suitable for scientific research breeding test - Google Patents
A kind of rice threshing device suitable for scientific research breeding test Download PDFInfo
- Publication number
- CN109315153A CN109315153A CN201811424691.2A CN201811424691A CN109315153A CN 109315153 A CN109315153 A CN 109315153A CN 201811424691 A CN201811424691 A CN 201811424691A CN 109315153 A CN109315153 A CN 109315153A
- Authority
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- China
- Prior art keywords
- rice
- threshing
- spike
- input magazine
- scientific research
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 235000007164 Oryza sativa Nutrition 0.000 title claims abstract description 85
- 235000009566 rice Nutrition 0.000 title claims abstract description 85
- 238000011160 research Methods 0.000 title claims abstract description 24
- 238000012360 testing method Methods 0.000 title claims abstract description 24
- 238000009395 breeding Methods 0.000 title claims abstract description 22
- 230000001488 breeding effect Effects 0.000 title claims abstract description 22
- 240000007594 Oryza sativa Species 0.000 title 1
- 241000209094 Oryza Species 0.000 claims abstract description 85
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- 230000001681 protective effect Effects 0.000 claims description 12
- 238000003466 welding Methods 0.000 claims description 7
- 235000013339 cereals Nutrition 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 238000003032 molecular docking Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000012423 maintenance Methods 0.000 abstract description 6
- 230000003670 easy-to-clean Effects 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 241000251169 Alopias vulpinus Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000016383 Zea mays subsp huehuetenangensis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 235000009973 maize Nutrition 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F7/00—Threshing apparatus
- A01F7/02—Threshing apparatus with rotating tools
- A01F7/04—Threshing apparatus with rotating tools with axles transverse to the feeding direction
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F12/00—Parts or details of threshing apparatus
- A01F12/60—Grain tanks
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Tires In General (AREA)
Abstract
The present invention discloses a kind of rice threshing device suitable for scientific research breeding test, belong to agricultural machinery technological field, including rack, spike of rice input magazine, threshing cylinder, seed collection case and driving assembly, spike of rice input magazine is mounted on the top of rack, threshing cylinder is mounted in spike of rice input magazine, one end of threshing cylinder and the power output end of driving assembly connect, and for driving threshing cylinder to rotate, the outer surface of threshing cylinder is provided with several threshings and hooks driving assembly；Driving assembly is mounted on the side of rack, and seed collection case is mounted on the lower section of spike of rice input magazine, and seed collection case is used to collect the seed by taking off in spike of rice input magazine.Rice threshing device of the invention, simple structure is light and handy, manufacturing cost is low, maintenance easy to disassemble, and it is easy to operate, energy-efficient, using safe, threshing performance is high, suitable for small surfaces examination, cell survey produce scientific research breeding test.
Description
Technical field
The present invention relates to agricultural mechanical fields, fill more particularly to a kind of rice threshing suitable for scientific research breeding test
It sets.
Background technique
Rice is the important cereal crops in China, cultivates the strong rice varieties of high-quality, high yield, resistance, be breeder not
The disconnected target pursued.Wherein, progress cell surveys production, the small area production of hybrid seeds is a time-consuming, laborious job, but selects in rice varieties
It is again of crucial importance during educating.The method of current rice threshing mainly there are several types of: first is that it is agricultural large size grain threshing
Machine is only applicable to threshing operations larger in agricultural production；Second is that the small-sized thresher of conventional wooden man power, although
Be applicable in small surfaces examination, production threshing survey produce operation, but large labor intensity, low efficiency, not easy cleaning, easily mix；Third is that manually
Threshing, not only time-consuming, laborious, low efficiency, but also it is not suitable for modern society.
Although type is generally existing in view of the above-mentioned problems, existing market a variety of small-scale rice threshers occurs in succession
Design structure is complicated, and machines cumbersome, corner, gap are more, be easy to cause cleaning difficult and impurity of seeds, not convenient for safeguarding asks
Topic；Simultaneously as price is higher, popularization and application are also strongly limited.Therefore, a kind of water suitable for scientific research breeding test is studied
Rice sheller unit is of crucial importance.
Summary of the invention
That the object of the present invention is to provide a kind of simple structures is light and handy, maintenance easy to disassemble, threshing performance is high, educates suitable for scientific research
The rice threshing device of kind test.
To achieve the above object, the present invention provides following schemes:
The present invention provides a kind of rice threshing device suitable for scientific research breeding test, including rack, spike of rice input magazine, de-
Grain roller, seed collection case and driving assembly, the spike of rice input magazine are mounted on the top of the rack, the threshing cylinder peace
In the spike of rice input magazine, one end of the threshing cylinder and the power output end of the driving component are connected, the drive
For driving the threshing cylinder to rotate, the outer surface of the threshing cylinder is provided with several threshings and hooks dynamic component；The driving
Component is mounted on the side of the rack, and the seed collection case is mounted on the lower section of the spike of rice input magazine, and the seed is received
Header is used to collect the seed by taking off in the spike of rice input magazine.
Optionally, it is additionally provided with protective cover, the protective cover is removably mounted at the top of the spike of rice input magazine.
Optionally, the spike of rice input magazine bottom connection installation one taper scraper bowl, the big opening end of the taper scraper bowl with
The bottom opening of the spike of rice input magazine docks.
Optionally, the seed collection case is drawer type collecting box, and the side of the drawer type collecting box is provided with handle.
Optionally, the threshing cylinder includes shaft, front end face and rear end face, and the front end face and the rear end face are distinguished
Fixation is set in the shaft, and the both ends of the shaft pass through the two sidewalls that bearing is mounted on the spike of rice input magazine respectively
On.
Optionally, by more steel pipe connections between the front end face and the rear end face, the more steel pipes are with described
Shaft is that axis is circumferentially uniformly distributed, and is provided with the identical threshing in multiple crotch directions on the every steel pipe and is hooked.
Optionally, the threshing on the every steel pipe hooks equally spaced distribution, described de- on the adjacent steel pipe
Grain hook is arranged in parallel or interleaved setting.
Optionally, the driving component includes gasoline engine and conveyer belt, and the output end of the gasoline engine passes through the transmission
Band is connect with the shaft.
Optionally, one end of the shaft is equipped with runner, and the output end of the gasoline engine passes through the conveyer belt and institute
State runner connection.
Optionally, the spike of rice input magazine, the threshing cylinder and the seed collection case are that seamless welding forms.
The present invention achieves following technical effect compared with the existing technology:
Rice threshing device of the invention, simple structure is light and handy, manufacturing cost is low, maintenance easy to disassemble, and operates letter
It is single, energy-efficient, using safe, threshing performance is high, suitable for small surfaces examination, cell survey produce scientific research breeding test.
In addition, seed collection case use drawer type collecting box, protective cover is convenient for disassembly and assembly, spike of rice input magazine, threshing cylinder and
Seed collection case is all made of seamless welding, so that easy to clean inside device, can effectively prevent retaining and mixing for seed, guarantees kind
Sub- purity.It is not only simple light and handy also, using gasoline engine as driving source, but also convenient for working in field.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without any creative labor, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the main view of rice threshing device of the present invention；
Fig. 2 is the right view of Fig. 1 rice threshing device；
Fig. 3 is the left view of Fig. 1 rice threshing device；
Fig. 4 is schematic diagram when Fig. 3 rice threshing device does not install shield；
Fig. 5 is the structural schematic diagram of threshing cylinder of the present invention；
Wherein, appended drawing reference are as follows: 1, rack；2, spike of rice input magazine；3, threshing cylinder；4, seed collection case；5, protective cover；
6, taper scraper bowl；7, handle；8, gasoline engine；9, shaft；10, runner；11, front end face；12, rear end face；13, steel pipe；14, threshing
It hooks；15, conveyer belt.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
That the object of the present invention is to provide a kind of simple structures is light and handy, maintenance easy to disassemble, threshing performance is high, educates suitable for scientific research
The rice threshing device of kind test.
Based on this, the present invention provides a kind of rice threshing device suitable for scientific research breeding test, including rack, spike of rice be defeated
Cartonning, threshing cylinder, seed collection case and driving assembly, spike of rice input magazine are mounted on the top of rack, and threshing cylinder is mounted on
In spike of rice input magazine, one end of threshing cylinder and the power output end of driving assembly are connected, and driving assembly is for driving threshing roll
Cylinder rotation, the outer surface of threshing cylinder are provided with several threshings and hook；Driving assembly is mounted on the side of rack, seed collection case peace
Mounted in the lower section of spike of rice input magazine, seed collection case is used to collect the seed by taking off in spike of rice input magazine.
Rice threshing device of the invention, simple structure is light and handy, manufacturing cost is low, maintenance easy to disassemble, and operates letter
It is single, energy-efficient, using safe, threshing performance is high, suitable for small surfaces examination, cell survey produce scientific research breeding test.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
Embodiment one:
As shown in Fig. 1~5, the present embodiment provides a kind of rice threshing devices suitable for scientific research breeding test, including machine
Frame 1, spike of rice input magazine 2, threshing cylinder 3, seed collection case 4 and driving assembly, spike of rice input magazine 2 are mounted on the top of rack 1,
Threshing cylinder 3 is mounted in spike of rice input magazine 2, and one end of threshing cylinder 3 and the power output end of driving assembly connect, driving group
For driving threshing cylinder 3 to rotate, the outer surface of threshing cylinder 3 is provided with several threshings and hooks 14 part, and preferably spike of rice input magazine 2 is
Spike of rice is put by open box structure from opening, under the action of threshing cylinder 3 of rotation, threshing hook 14 constantly to spike of rice into
Row threshing；Driving assembly is mounted on the side of rack 1, and as shown in figs. 2 to 4, the side of rack 1 is provided with a transverse slat frame, driving
Component is mounted on transverse slat frame, and transverse slat frame is supported by a diagonal brace and fixed；Seed collection case 4 is mounted on the lower section of spike of rice input magazine 2,
Seed collection case 4 is used to collect the seed by taking off in spike of rice input magazine 2.
Further, as shown in Figures 1 to 3, it is additionally provided with protective cover 5, protective cover 5 is removably mounted at spike of rice input magazine 2
Top；Protective cover 5 is preferably Semi surrounding type structure, and protective cover 5 seed can splash in effective means threshing course, and will not
Interfere input of the spike of rice in spike of rice input magazine 2.Protective cover 5 is preferably that metal material seamless welding forms, and easy to clean is also effective
Prevent retaining and mixing for seed.
Further, as shown in Figures 1 to 3, the bottom connection one taper scraper bowl 6 of installation of spike of rice input magazine 2, taper scraper bowl 6
Big opening end docked with the bottom opening of spike of rice input magazine 2, the osculum end of taper scraper bowl 6 enters close to the top of seed collection case 4
Mouthful, for taper scraper bowl 6 convenient for will be collected into seed collection case 4 in the subset formed after threshing, the setting of conical opening can be effective
It prevents seed from leaking, improves seed collection rate.Taper scraper bowl 6 is preferably rectangular pyramid or round estrade.And it is seamless for metal material
It is welded, easy to clean also effectively prevent retaining and mixing for seed.
Further, as shown in Figures 1 to 3, seed collection case 4 is drawer type collecting box, and the side of drawer type collecting box is set
It is equipped with handle 7, seed collection case 4 is set as drawer type and is conveniently replaceable and seed collection.Seed collection case 4 is preferably metal material
Seamless welding forms, easy to clean, also effectively prevent retaining and mixing for seed.
Further, as shown in figure 5, threshing cylinder 3 includes shaft 9, front end face 11 and rear end face 12, front end face 11 is with after
End face 11 be etc. big circular metal plate, and respectively fixation be set in shaft 9, as shown in figure 4, the both ends of shaft 9 lead to respectively
It crosses bearing and associated fixing member is mounted on the two sidewalls of spike of rice input magazine 2.
Further, as shown in figure 5, being connected between front end face 11 and rear end face 12 by more steel pipes 13, more steel pipes
13 are circumferentially uniformly distributed with shaft 9 for axis, and are provided with the identical threshing in multiple crotch directions on every steel pipe 13 and are hooked 14,
The crotch direction that threshing hooks 14 is preferably directed towards ear inlet side.
Further, as shown in figure 5, the threshing on every steel pipe 13 hooks 14 equally spaced distributions, and on adjacent steel pipe 13
Threshing hook 14 be arranged in parallel or interleaved setting, convenient for improve threshing hook 14 distribution density, improve Threshing.
Further, driving assembly includes gasoline engine 8 and conveyer belt 15, the output end of gasoline engine 8 by conveyer belt 15 with
Shaft 9 connects.Gasoline engine 8 is fixed on the transverse slat frame of rack 1, while being had in rack 1 for adjusting the elastic dress of conveyer belt 15
It sets, gasoline engine 8 drives threshing cylinder 3 to rotate by transmission belt 15, and the rotation speed of threshing cylinder 3 is controlled by gasoline engine 8.With vapour
Oil machine 8 is that power resources are not limited convenient for working in field by place.
Further, as shown in figure 3, one end of shaft 9 is equipped with runner 10, the output end of gasoline engine 8 passes through conveyer belt
15 connect with runner 10.
Further, spike of rice input magazine 2, threshing cylinder 3 and seed collection case 4 are that seamless welding forms, easy to clean, also
It effectively prevent retaining and mixing for seed.
Specifically used explanation is made to the present embodiment so that gasoline engine is 1.5 horsepowers as an example below.
Firstly, starting gasoline engine 8 drives threshing cylinder 3 to rotate by transmission belt 15, while using the side of artificial half feeding
20-30 root and stem of certain plants rice is put by formula from the opening above spike of rice input magazine 2, and threshing cylinder 3 falls the seed formed after rice threshing
Enter in seed collection case 4, as long as stopping being put into spike of rice, body meeting horse back self-cleaning will not remain grain, then replace seed collection case
4, next kind threshing operation can be carried out, it is convenient and efficient.The thresing machine production efficiency is up to 4000 plants/hour, i.e.,
1200 squares/hour, Losing seed rate are generally less than 0.1%, and Threshing is good, and threshing efficiency is high.
It can be seen that rice threshing device of the invention, simple structure is light and handy, manufacturing cost is low, maintenance easy to disassemble, and
And it is easy to operate, energy-efficient, using safe, threshing performance is high, suitable for small surfaces examination, cell survey produce scientific research breeding examination
It tests.In addition, seed collection case uses drawer type collecting box, protective cover is convenient for disassembly and assembly, and spike of rice input magazine, threshing cylinder and seed are received
Header is all made of seamless welding, so that easy to clean inside device, can effectively prevent retaining and mixing for seed, guarantees that seed is pure
Degree.It is not only simple light and handy also, using gasoline engine as driving source, but also convenient for working in field
It should be noted that sheller unit of the invention is not only applicable in rice threshing, it can also be wheat, jowar, maize
Equal crops de- material, the adaptive change carried out according to actual needs are within the scope of the invention.For this field
For technical staff, it is clear that invention is not limited to the details of the above exemplary embodiments, and without departing substantially from spirit of the invention
Or in the case where essential characteristic, the present invention can be realized in other specific forms.It therefore, in all respects, should all
Regard embodiment as exemplary, and be non-limiting, the scope of the present invention is above-mentioned by appended claims
Illustrate to limit, it is intended that including all changes that fall within the meaning and scope of the equivalent elements of the claims in the present invention
Interior, any reference signs in the claims should not be construed as limiting the involved claims.
Specific examples are applied in the present invention, and principle and implementation of the present invention are described, above embodiments
Illustrate to be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, according to
According to thought of the invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification
It should not be construed as limiting the invention.
Claims (10)
1. a kind of rice threshing device suitable for scientific research breeding test, it is characterised in that: including rack, spike of rice input magazine, take off
Grain roller, seed collection case and driving assembly, the spike of rice input magazine are mounted on the top of the rack, the threshing cylinder peace
In the spike of rice input magazine, one end of the threshing cylinder and the power output end of the driving component are connected, the drive
For driving the threshing cylinder to rotate, the outer surface of the threshing cylinder is provided with several threshings and hooks dynamic component；The driving
Component is mounted on the side of the rack, and the seed collection case is mounted on the lower section of the spike of rice input magazine, and the seed is received
Header is used to collect the seed by taking off in the spike of rice input magazine.
2. the rice threshing device according to claim 1 suitable for scientific research breeding test, it is characterised in that: be additionally provided with
Protective cover, the protective cover are removably mounted at the top of the spike of rice input magazine.
3. the rice threshing device according to claim 1 suitable for scientific research breeding test, it is characterised in that: the spike of rice
The bottom connection one taper scraper bowl of installation of input magazine, the bottom opening of the big opening end of the taper scraper bowl and the spike of rice input magazine
Docking.
4. the rice threshing device according to claim 1 suitable for scientific research breeding test, it is characterised in that: the seed
Collecting box is drawer type collecting box, and the side of the drawer type collecting box is provided with handle.
5. being suitable for the rice threshing device of scientific research breeding test described in any one according to claim 1~4, feature exists
In: the threshing cylinder includes shaft, front end face and rear end face, and fixation is set in institute respectively for the front end face and the rear end face
It states in shaft, the both ends of the shaft pass through bearing respectively and are mounted on the two sidewalls of the spike of rice input magazine.
6. the rice threshing device according to claim 5 suitable for scientific research breeding test, it is characterised in that: the front end
By more steel pipe connections between face and the rear end face, the more steel pipes are circumferentially uniformly distributed using the shaft as axis,
And it is provided with the identical threshing in multiple crotch directions on the every steel pipe and hooks.
7. the rice threshing device according to claim 6 suitable for scientific research breeding test, it is characterised in that: described in every
The threshing on steel pipe hooks equally spaced distribution, and the threshing hook on the adjacent steel pipe is arranged in parallel or interleaved is set
It sets.
8. the rice threshing device according to claim 5 suitable for scientific research breeding test, it is characterised in that: the driving
Component includes gasoline engine and conveyer belt, and the output end of the gasoline engine is connect by the conveyer belt with the shaft.
9. the rice threshing device according to claim 8 suitable for scientific research breeding test, it is characterised in that: the shaft
One end runner is installed, the output end of the gasoline engine is connect by the conveyer belt with the runner.
10. the rice threshing device according to claim 1 suitable for scientific research breeding test, it is characterised in that: the rice
Fringe input magazine, the threshing cylinder and the seed collection case are that seamless welding forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811424691.2A CN109315153A (en) | 2018-11-27 | 2018-11-27 | A kind of rice threshing device suitable for scientific research breeding test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811424691.2A CN109315153A (en) | 2018-11-27 | 2018-11-27 | A kind of rice threshing device suitable for scientific research breeding test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109315153A true CN109315153A (en) | 2019-02-12 |
Family
ID=65258548
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811424691.2A Pending CN109315153A (en) | 2018-11-27 | 2018-11-27 | A kind of rice threshing device suitable for scientific research breeding test |
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| Country | Link |
|---|---|
| CN (1) | CN109315153A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114391375A (en) * | 2022-02-15 | 2022-04-26 | 金华职业技术学院 | Rice threshing device suitable for scientific research breeding is experimental |
| CN114600645A (en) * | 2022-04-16 | 2022-06-10 | 益阳市农业科学研究所 | Rice threshing device suitable for scientific research breeding is experimental |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202663814U (en) * | 2012-07-14 | 2013-01-16 | 天津市宇圣农业机械制造有限公司 | Threshing cylinder for rice thresher |
| CN209134853U (en) * | 2018-11-27 | 2019-07-23 | 湖南省水稻研究所 | A kind of rice threshing device suitable for scientific research breeding test |
-
2018
- 2018-11-27 CN CN201811424691.2A patent/CN109315153A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202663814U (en) * | 2012-07-14 | 2013-01-16 | 天津市宇圣农业机械制造有限公司 | Threshing cylinder for rice thresher |
| CN209134853U (en) * | 2018-11-27 | 2019-07-23 | 湖南省水稻研究所 | A kind of rice threshing device suitable for scientific research breeding test |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114391375A (en) * | 2022-02-15 | 2022-04-26 | 金华职业技术学院 | Rice threshing device suitable for scientific research breeding is experimental |
| CN114391375B (en) * | 2022-02-15 | 2023-04-25 | 金华职业技术学院 | Rice threshing device suitable for scientific research breeding tests |
| CN114600645A (en) * | 2022-04-16 | 2022-06-10 | 益阳市农业科学研究所 | Rice threshing device suitable for scientific research breeding is experimental |
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