CN108029293A - One kind sows uniform miniature seeding machine - Google Patents
One kind sows uniform miniature seeding machine Download PDFInfo
- Publication number
- CN108029293A CN108029293A CN201711413548.9A CN201711413548A CN108029293A CN 108029293 A CN108029293 A CN 108029293A CN 201711413548 A CN201711413548 A CN 201711413548A CN 108029293 A CN108029293 A CN 108029293A
- Authority
- CN
- China
- Prior art keywords
- sub
- feeding box
- material feeding
- sliding
- seeding machine
- 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
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Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C7/00—Sowing
- A01C7/08—Broadcast seeders; Seeders depositing seeds in rows
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C15/00—Fertiliser distributors
- A01C15/005—Undercarriages, tanks, hoppers, stirrers specially adapted for seeders or fertiliser distributors
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C7/00—Sowing
- A01C7/20—Parts of seeders for conducting and depositing seed
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Sowing (AREA)
Abstract
The invention discloses one kind to sow uniform miniature seeding machine, is related to agricultural equipment technical field.The seeder, including placement plate, the upper end of placement plate is provided with material feeding box, support column is provided with the left of the placement plate bottom, wheel is provided with the right side of the placement plate bottom, the side of the wheel is provided with the first belt pulley, first belt pulley is socketed with belt, the material feeding box is plugged with shaft, and the shaft is provided with the second belt pulley, and shaft side is equipped with cam；Material feeding box side wall is equipped with sliding slot, sliding block is equipped with the sliding slot, sliding block is equipped with sub-material hopper, automatic adjusting mechanism is installed at sub-material hopper outlet, the charging box cavity lower part is equipped with taper ring flat-plate, sub-material elastic network(s) is installed, the sub-material elastic network(s) lower end is provided with the impact block with the cam engagement on the taper ring flat-plate.The seeder, sowing are uniform, it is not easy to block, sowing is efficient, and effect is good, the strong yield that ensure that agricultural product.
Description
Technical field
The present invention relates to agricultural equipment technical field, is specially a kind of uniform miniature seeding machine of sowing.
Background technology
Seeder is the planting machinery using crop seed as sowing object.With Mr. Yu's class or the seeder of certain crop, often
Titled with crop species title, such as grain dill, corn seeding drill, cotton planter and herbage seed broadcaster.
Seeder is widely used in field of agricultural cultivation, but because China's physical features is numerous and diverse, and seeder build is larger, makes to be permitted
More place seeders can not be used, so as to create miniature seeding machine according to use demand.
And miniature seeding machine is in use, because being manual operation, sowing is not uniform enough, and easily blocks, and influences
The efficiency and effect of sowing.
The content of the invention
In view of the deficiencies of the prior art, the present invention provides one kind to sow uniform miniature seeding machine, solves small-sized broadcast
Kind machine is sowed not enough uniformly in use, and easy the problem of blocking, work efficiency are high.
In order to achieve the above object, the present invention is achieved by the following technical programs：The uniform small-sized sowing of one kind sowing
Machine, including placement plate, the upper end of the placement plate are provided with material feeding box, support column are provided with the left of the placement plate bottom,
Universal wheel is installed on the left of the support column lower end, is provided with wheel on the right side of the placement plate bottom, the one of the wheel
Side is provided with the first belt pulley, and the surface of first belt pulley is socketed with belt, and the inner cavity of the material feeding box is plugged with shaft,
One end of the shaft is provided with the second belt pulley, and the second belt pulley is connected with belt, the middle part installation of the shaft side
There is cam；
The material feeding box intracavity sidewall is equipped with sliding slot, is equipped with sliding block in the sliding slot, the sliding block is provided with sub-material hopper, institute
State and automatic adjusting mechanism is installed at sub-material hopper outlet, the charging box cavity lower part is equipped with taper ring flat-plate, the conical ring
Sub-material elastic network(s) is installed, the sub-material elastic network(s) lower end is provided with the impact block with the cam engagement on plate；
Preferably, the bottom of the charging box cavity is communicated with conveying pipeline, and the bottom of the conveying pipeline is communicated with metal angle, described
Multiple bafflers are installed in conveying pipeline.
Preferably, the universal wheel, wheel and metal angle are located in same level, and metal angle is located at universal wheel and wheel
The middle part of son.
Preferably, the upper end of the material feeding box is provided with lid, and lid is connected by hinge with material feeding box.
Preferably, multiple bafflers are staggered.
Preferably, the automatic adjusting mechanism include be located on sub-material hopper outlet side wall multiple sliding cavities, be located at institute
State the sliding shoe in sliding cavity and be located at the extruding spring extruded in the sliding cavity the sliding shoe.
Preferably, the automatic adjusting mechanism further includes the spring adjustment plate that is located at the sliding cavity and for adjusting
State the adjusting screw of spring adjustment Board position.
Preferably, the bulk cargo mechanism being equipped with the material feeding box below the sub-material hopper, bulk cargo mechanism bag
Include the mounting base being fixedly connected by gusset with the material feeding box, the central shaft being hinged in the mounting base and be fixed on institute
State the taper dispersion plate on central shaft.
Beneficial effect
The seeder, sowing are uniform, it is not easy to block, sowing is efficient, and effect is good, the strong yield that ensure that agricultural product.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is the sectional view of material feeding box of the present invention；
Fig. 3 is the sectional view of metal angle of the present invention.
In figure：1 placement plate, 2 material feeding box, 3 support columns, 4 universal wheels, 5 wheels, 6 first belt pulleys, 7 belts, 8 shafts, 9
Second belt pulley, 10 sliding slots, 11 sliding blocks, 12 sub-material hoppers, 13 automatic adjusting mechanisms, 14 taper ring flat-plates, 15 sub-material elastic network(s)s, 16
Impact block, 17 conveying pipelines, 18 metal angles, 19 bafflers, 20 lids, 21 hinges, 22 cams.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment, belongs to the scope of protection of the invention.
- 3 are please referred to Fig.1, the present invention provides a kind of technical solution：One kind sows uniform miniature seeding machine, including places
Plate 1 and the rack 25 connected with placement plate, the upper end of placement plate 1 are provided with material feeding box 2, and the upper end of material feeding box 2 is provided with lid
Son 20, and lid 20 is hinged by hinge 21 and material feeding box 2, is provided with support column 3 on the left of 1 bottom of placement plate, under support column 3
Universal wheel 4 is installed, universal wheel 4, wheel 5 and metal angle 18 are located in same level, and metal angle 18 is located on the left of end
The middle part of universal wheel 4 and wheel 5, is provided with wheel 5 on the right side of 1 bottom of placement plate, the side of wheel 5 is provided with the first belt pulley
6, the surface of the first belt pulley 6 is socketed with belt 7, and the inner cavity of material feeding box 2 is plugged with shaft 8, and one end of shaft 8 is provided with second
Belt pulley 9, and the second belt pulley 9 is connected with belt 7, shaft is provided with cam 22 in the middle part of 8 side, passes through setting for placement plate 1
Whole device stable connection is put, in use, by promoting handle 23 to rotate wheel 5 and universal wheel 4,5 outer circumference surface of wheel is set
There are decorative pattern or multiple axial gussets；When wheel 5 rotates, the first belt pulley 6 is driven to rotate, because the first belt pulley 6 and belt 7
Connection, rotates the second belt pulley 9, when the second belt pulley 9 rotates, drives shaft 8 to rotate, so that the cam 22 in shaft 8
Grazing is produced with impact block 16, so that sub-material elastic network(s) 15 produces shake, sub-material elastic network(s) is made of spring steel wire, and its
Multiple seeds are equipped with by hole 1501, the seed when sub-material elastic network(s) 15 produces shake thereon can pass through hole by seed
1501。
The top of the inner side of material feeding box 2 offers sliding slot 10, and sliding block 11, sliding block 11 and sub-material hopper are connected with sliding slot 10
12 connections, 12 exit of sub-material hopper are provided with automatic adjusting mechanism 13, and the 2 inner cavity lower part of material feeding box is equipped with conical ring
Plate 14, is provided with sub-material elastic network(s) 15 on the taper ring flat-plate 14,15 lower end of sub-material elastic network(s) is provided with and the cam
The impact block 16 of cooperation, impact block 16 is located at the top of cam 22, when wheel 5 and universal wheel 4 rotate, because the height in farmland
Injustice, then textured wheels surface texture, will produce vibration, and during vibration, because seed is located on sub-material hopper 12, seed can be into
Row shake, and then come out from the outlet of sub-material hopper, sub-material hopper 12 can be upward along sliding slot 10, right so as to take out
Sub-material hopper 12 is cleared up, repaired, and seed out is dropped on sub-material elastic network(s) 15 by taper ring flat-plate 14, passes through shaft
During 8 rotation with moving cam 22 when rotating, cam 22 is acted with impact block 16, is caused sub-material elastic network(s) 15 to produce and is vibrated,
So that seed is fallen from sub-material elastic network(s) 15.
The automatic adjusting mechanism 13 include be located in 12 exit side wall of sub-material hopper multiple sliding cavities 1301, be located at institute
State the sliding shoe 1302 in sliding cavity 1301 and be located at the sliding shoe 1302 is extruded in the sliding cavity 1301
Extrude spring 1303；The inner surface of sliding shoe is inclined plane, in this way, the inner surface of multiple sliding shoes just forms tapered channel
1306；When being subject to seed to extrude；The compression stress slid inward of extruding spring can be overcome so that tapered channel becomes larger,
When seed pressure diminishes, sliding shoe can skid off under the action of spring is extruded so that tapered channel diminishes, so
Structure, additionally it is possible to seeder walk sow when, utilize its produce vibration；It is not only able to solve asking for seed blocking
Topic, additionally it is possible to so that the whereabouts of seed in batches, it is uniform to be conducive to sowing.
Further, the automatic adjusting mechanism 13 further include be located at the spring adjustment plate 1304 of the sliding cavity 1301 with
And for adjusting the adjusting screw 1305 of 1304 position of spring adjustment plate；Adjusting screw is screwed onto 12 outlet side of sub-material hopper
On wall, the position of spring adjustment plate is adjusted by precession or back-out, and then realize the adjustment to extruding spring spring force.
Further；In order to sow uniformly and prevent from blocking；It is equipped with the material feeding box 2 and is located at the sub-material hopper 12
The bulk cargo mechanism 24 of lower section, the bulk cargo mechanism 24 include the mounting base being fixedly connected by gusset 2401 with the material feeding box 2
2402nd, the central shaft 2403 being hinged in the mounting base 2402 and the taper dispersion plate being fixed on the central shaft 2403
2404；Gusset is multiple；The seed come out from sub-material hopper 12 falls on taper dispersion plate 2404, because taper dispersion plate 2404
It is taper, and tip is set upward, so seed glides along its conical surface, simultaneously as stress is not uniform enough so that taper point
Fall apart and 2404 rotated in mounting base, in addition, being laid with multiple spring leafs 2405, spring leaf in 2404 end of taper dispersion plate
With taper dispersion plate 2404 into 12-150 ° of obtuse angle, preferably 150 °；That is, relative to taper dispersion plate 2404, spring leaf
End is upturned, such structure so that the seed to get off from taper dispersion plate 2404, under the action of spring leaf,
Further spread out.
The bottom of 2 inner cavity of material feeding box is communicated with conveying pipeline 17, and the bottom of conveying pipeline 17 is communicated with metal angle 18, conveying pipeline 17
Baffler 19 is inside installed, baffler 19 is uniformly arranged on the inner cavity of conveying pipeline 17, and is staggered between baffler 19, screening
Seed afterwards enters in conveying pipeline 17, by staggeredly obstructing for baffler 19, slows down seeds fall speed and make it that it is scattered, from
And play uniformly sowing effect.Further, 19 one end of baffler is connected by spring and conveying pipeline 17.
Meanwhile the uniform miniature seeding machine of the sowing, by the improvement of the method for operation, placement plate 1, charging has been respectively adopted
Case 2, support column 3, universal wheel 4, wheel 5, the first belt pulley 6, belt 7, shaft 8, the second belt pulley 9, baffler 19, lid 20
With the structure design of hinge 21, and under the cooperation of wheel 5 and universal wheel 4, it is set to make metal angle 18 to soil by its rotation
Ground produces pushing, so as to ensure that seed can enter in soil, will not be exposed.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Non-exclusive inclusion, so that process, method, article or equipment including a series of elements not only will including those
Element, but also including other elements that are not explicitly listed, or further include as this process, method, article or equipment
Intrinsic key element.
Claims (7)
1. one kind sows uniform miniature seeding machine, including placement plate（1）, it is characterised in that：The placement plate（1）Upper end peace
Equipped with material feeding box（2）, the placement plate（1）Support column is provided with the left of bottom（3）, the support column（3）The left side of lower end
Universal wheel is installed（4）, the placement plate（1）Wheel is provided with the right side of bottom（5）, the wheel（5）Side be provided with
First belt pulley（6）, first belt pulley（6）Surface be socketed with belt（7）, the material feeding box（2）Inner cavity be plugged with
Shaft（8）, the shaft（8）One end the second belt pulley is installed（9）, and the second belt pulley（9）With belt（7）Connection, institute
State shaft（8）Cam is installed in the middle part of side（22）；
The material feeding box（2）Intracavity sidewall is equipped with sliding slot（10）, the sliding slot（10）It is interior to be equipped with sliding block（11）, the sliding block
（11）Sub-material hopper is installed（12）, the sub-material hopper（12）Exit is provided with automatic adjusting mechanism（13）, the charging
Case（2）Inner cavity lower part is equipped with taper ring flat-plate（14）, the taper ring flat-plate（14）On sub-material elastic network(s) is installed（15）, the sub-material
Elastic network(s)（15）Lower end is provided with the impact block with the cam engagement（16）；
The material feeding box（2）The bottom of inner cavity is communicated with conveying pipeline（17）, the conveying pipeline（17）Bottom be communicated with metal angle
（18）, the conveying pipeline（17）Multiple bafflers are inside installed（19）.
A kind of 2. uniform miniature seeding machine of sowing according to claim 1, it is characterised in that：The universal wheel（4）, wheel
Son（5）And metal angle（18）In same level, and metal angle（18）Positioned at universal wheel（4）And wheel（5）Middle part.
A kind of 3. uniform miniature seeding machine of sowing according to claim 1, it is characterised in that：The material feeding box（2）'s
Upper end is provided with lid（20）, and lid（20）Pass through hinge（21）With material feeding box（2）Connection.
A kind of 4. uniform miniature seeding machine of sowing according to claim 1, it is characterised in that：Multiple bafflers
（19）It is staggered.
A kind of 5. uniform miniature seeding machine of sowing according to claim 1, it is characterised in that：The automatic adjusting mechanism
（13）Including being located at sub-material hopper（12）Multiple sliding cavities in exit side wall（1301）, be located at the sliding cavity（1301）In
Sliding shoe（1302）And it is located at the sliding cavity（1301）In to the sliding shoe（1302）The extruding spring extruded
（1303）.
A kind of 6. uniform miniature seeding machine of sowing according to claim 5, it is characterised in that：The automatic adjusting mechanism
（13）Further include and be located at the sliding cavity（1301）Spring adjustment plate（1304）And for adjusting the spring adjustment plate
（1304）The adjusting screw of position（1305）.
A kind of 7. uniform miniature seeding machine of sowing according to claim 1, it is characterised in that：The material feeding box（2）It is interior
Equipped with positioned at the sub-material hopper（12）The bulk cargo mechanism of lower section（24）, the bulk cargo mechanism（24）Including passing through gusset（2401）
With the material feeding box（2）The mounting base being fixedly connected（2402）, be hinged on the mounting base（2402）On central shaft（2403）
And it is fixed on the central shaft（2403）On taper dispersion plate（2404）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711413548.9A CN108029293A (en) | 2017-12-24 | 2017-12-24 | One kind sows uniform miniature seeding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711413548.9A CN108029293A (en) | 2017-12-24 | 2017-12-24 | One kind sows uniform miniature seeding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108029293A true CN108029293A (en) | 2018-05-15 |
Family
ID=62100707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711413548.9A Pending CN108029293A (en) | 2017-12-24 | 2017-12-24 | One kind sows uniform miniature seeding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108029293A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109168472A (en) * | 2018-09-28 | 2019-01-11 | 南安市谷隆工业设计有限公司 | A kind of uniform implanted device constant based on inverse ratio variation total amount |
| CN111418327A (en) * | 2020-04-16 | 2020-07-17 | 马鞍山市良田农业科技有限公司 | Ear-heading and flower-raising auxiliary device and method for rice planting |
| CN112516853A (en) * | 2019-10-25 | 2021-03-19 | 江西农业大学 | Modifier mixing apparatus is used in improvement of tea-oil camellia forest acid soil |
| CN113287393A (en) * | 2021-04-28 | 2021-08-24 | 湖南生物机电职业技术学院 | Intelligent constant-quantity precision seeding device for rice seedling tray seedling raising |
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| GB187664A (en) * | 1922-04-25 | 1922-11-02 | Thomas Charles Ellis | Improvements in seed sowing machines |
| SU1140700A2 (en) * | 1983-02-15 | 1985-02-23 | Запорожский Научно-Исследовательский Конструкторско-Технологический Институт По Машинам Для Подготовки И Внесения В Почву Минеральных Удобрений | Mixer of mineral fertilizers |
| SU1147263A1 (en) * | 1983-01-24 | 1985-03-30 | Опытно-Конструкторское Бюро При Сибирском Ордена Трудового Красного Знамени Научно-Исследовательском Институте Сельского Хозяйства | Arrangement for sowing selection plots |
| DE3917448A1 (en) * | 1989-05-30 | 1990-12-06 | Amazonen Werke Dreyer H | Centrifugally spraying fertiliser from conical container wall aperture - with off-centre stirrer oscillating to break up agglomerations |
| CN201223809Y (en) * | 2008-05-23 | 2009-04-22 | 孙广朋 | Adjustable non-block strong crusher |
| CN201315738Y (en) * | 2008-11-24 | 2009-09-30 | 河北省农业机械化研究所有限公司 | Wheat rototilling and broadcasting combined drill |
| CN202087350U (en) * | 2011-06-09 | 2011-12-28 | 纪文刚 | Modified impact hammer crusher |
| CN104541630A (en) * | 2015-01-07 | 2015-04-29 | 河北省农业机械化研究所有限公司 | Layered deep fertilization and equal-depth fertilizer spreading machine |
| CN204560208U (en) * | 2015-05-08 | 2015-08-19 | 贺州学院 | A kind of agricultural fertilizer device |
| CN204616296U (en) * | 2015-01-07 | 2015-09-09 | 河北省农业机械化研究所有限公司 | A kind of rotary tillage etc. spreads fertilizer distributor deeply |
| CN204816749U (en) * | 2015-08-10 | 2015-12-02 | 黄河科技学院 | Material crusher's feeding volume and material clearance manually operation device |
| CN205550202U (en) * | 2016-04-22 | 2016-09-07 | 山东点豆机械有限公司 | A discharging device that is used for joining in marriage fertile machine from inhaling formula mixture |
| CN205596558U (en) * | 2016-05-11 | 2016-09-28 | 安徽喜洋洋农业科技有限公司 | Novel rice drill device |
| CN106134581A (en) * | 2015-04-03 | 2016-11-23 | 江苏闪锐现代农业设备制造有限公司 | Multifunctional scattering machine |
| CN206585933U (en) * | 2017-01-20 | 2017-10-27 | 陈江吉 | A kind of seeder of adjustable ditching depth |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB187664A (en) * | 1922-04-25 | 1922-11-02 | Thomas Charles Ellis | Improvements in seed sowing machines |
| SU1147263A1 (en) * | 1983-01-24 | 1985-03-30 | Опытно-Конструкторское Бюро При Сибирском Ордена Трудового Красного Знамени Научно-Исследовательском Институте Сельского Хозяйства | Arrangement for sowing selection plots |
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| DE3917448A1 (en) * | 1989-05-30 | 1990-12-06 | Amazonen Werke Dreyer H | Centrifugally spraying fertiliser from conical container wall aperture - with off-centre stirrer oscillating to break up agglomerations |
| CN201223809Y (en) * | 2008-05-23 | 2009-04-22 | 孙广朋 | Adjustable non-block strong crusher |
| CN201315738Y (en) * | 2008-11-24 | 2009-09-30 | 河北省农业机械化研究所有限公司 | Wheat rototilling and broadcasting combined drill |
| CN202087350U (en) * | 2011-06-09 | 2011-12-28 | 纪文刚 | Modified impact hammer crusher |
| CN104541630A (en) * | 2015-01-07 | 2015-04-29 | 河北省农业机械化研究所有限公司 | Layered deep fertilization and equal-depth fertilizer spreading machine |
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| CN106134581A (en) * | 2015-04-03 | 2016-11-23 | 江苏闪锐现代农业设备制造有限公司 | Multifunctional scattering machine |
| CN204560208U (en) * | 2015-05-08 | 2015-08-19 | 贺州学院 | A kind of agricultural fertilizer device |
| CN204816749U (en) * | 2015-08-10 | 2015-12-02 | 黄河科技学院 | Material crusher's feeding volume and material clearance manually operation device |
| CN205550202U (en) * | 2016-04-22 | 2016-09-07 | 山东点豆机械有限公司 | A discharging device that is used for joining in marriage fertile machine from inhaling formula mixture |
| CN205596558U (en) * | 2016-05-11 | 2016-09-28 | 安徽喜洋洋农业科技有限公司 | Novel rice drill device |
| CN206585933U (en) * | 2017-01-20 | 2017-10-27 | 陈江吉 | A kind of seeder of adjustable ditching depth |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109168472A (en) * | 2018-09-28 | 2019-01-11 | 南安市谷隆工业设计有限公司 | A kind of uniform implanted device constant based on inverse ratio variation total amount |
| CN109168472B (en) * | 2018-09-28 | 2021-06-04 | 南京溧水高新产业股权投资有限公司 | Uniform sowing equipment with constant total quantity based on inverse ratio change |
| CN112516853A (en) * | 2019-10-25 | 2021-03-19 | 江西农业大学 | Modifier mixing apparatus is used in improvement of tea-oil camellia forest acid soil |
| CN111418327A (en) * | 2020-04-16 | 2020-07-17 | 马鞍山市良田农业科技有限公司 | Ear-heading and flower-raising auxiliary device and method for rice planting |
| CN113287393A (en) * | 2021-04-28 | 2021-08-24 | 湖南生物机电职业技术学院 | Intelligent constant-quantity precision seeding device for rice seedling tray seedling raising |
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