CN108848800A - A kind of isolated feed mechanism for seed and its application method - Google Patents
A kind of isolated feed mechanism for seed and its application method Download PDFInfo
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- CN108848800A CN108848800A CN201810825921.XA CN201810825921A CN108848800A CN 108848800 A CN108848800 A CN 108848800A CN 201810825921 A CN201810825921 A CN 201810825921A CN 108848800 A CN108848800 A CN 108848800A
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- seed
- hole
- transmission band
- isolated
- plants case
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- 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
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- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Sowing (AREA)
Abstract
Aiming at the problem that plants case in the prior art is connected to sowing mechanism and influences seeding accuracy, the present invention provides a kind of isolated feed mechanism for seed and its application method, including for storing seed vibration plants case, the activity leakage kind component that is arranged in immediately below vibration plants case and be arranged in immediately below activity leakage kind component for be discharged seed point to room；Wherein, the bottom for vibrating plants case is provided with multiple leak holes for planting；It is characterized in that：Activity leakage kind component includes driving portion, the active live-roller of driving portion driving, passive live-roller, active live-roller and the isolated transmission band of passive live-roller transmission and the planting slab being arranged between active live-roller and passive live-roller.The configuration of the present invention is simple will sow component using isolated transmission band and be isolated with vibration plants case, and improve seeding accuracy.
Description
Technical field
The invention belongs in agricultural machinery seed orientation arrangement apparatus more particularly to it is a kind of using conveyer belt isolation every
From formula feed mechanism for seed and its application method.
Background technique
China is used as large agricultural country, and development agriculturally has the national economic development in basic important work
With, and in precision agriculture field, how to improve seed per unit area yield has highly important work to the stable and high yields of future crop plants
With and meaning.
The crop of orientation sowing mainly has rice, corn, wheat, soybean etc., and the country orients the reason of sowing about seed
By originating in 1956, and earliest using the plantation with corn, by artificial orientation sow experiments have shown that orientation sowing for
The promotion of corn yield has obvious action.
And before seed oriented alignment, need the feed mechanism for seed arranged to seed.Existing feed mechanism for seed is typically all
Mechanical and aspirated-air type.All there is the problem of structure is complicated, system complex in existing aspirated-air type.
For a sowing work unit in mechanical seed sowing device, existing plants case and sowing mechanism are usually all
Connection or some period be connection.Such as Type Seed Metering Device, when seeding wheel rotation, seed declines in plants case
Enter the between cog of seeding wheel, in this process, plants case is connected to sowing mechanism.After plants case and sowing mechanism connection, it is easy for leading
The seed in plants case is caused to impact seeding accuracy.
Summary of the invention
Aiming at the problem that plants case in the prior art is connected to sowing mechanism and influences seeding accuracy, the present invention provide it is a kind of every
From formula feed mechanism for seed and its application method, structure is simple, can effectively solve the problems, such as that the seed in plants case influences seeding accuracy.
A kind of isolated feed mechanism for seed, including for storing seed vibration plants case, setting vibration plants case just under
Activity leakage kind of the component of side and be arranged in immediately below activity leakage kind component for be discharged seed point to room；Wherein, it vibrates
The bottom of plants case is provided with multiple leak holes for planting；It is characterized in that：Activity leakage kind component includes driving portion, driving portion drive
Dynamic active live-roller, passive live-roller, active live-roller and the isolated transmission band of passive live-roller transmission and setting are in master
Planting slab between dynamic live-roller and passive live-roller；Wherein, close to the conveyer belt of vibration plants case side in isolated transmission band
The bottom surface of plants case is parallel and 1 ~ 3mm of spacing with vibration for upside；On the downside of conveyer belt far from vibration plants case side in isolated transmission band
With point be arranged in parallel to the feed inlet of room and 1 ~ 3mm of spacing；Wherein, close to the planting slab of vibration plants case side in planting slab
It is less than 2mm the distance between on the upside of upper surface and conveyer belt；Planting slab following table far from vibration plants case side in planting slab
It is less than 2mm the distance between on the downside of face and conveyer belt；Wherein, planting slab, which is equipped with, deposits kind of a hole with the perforation of leak hole axis；
It is provided on isolated transmission band for depositing by falling the seed dropping hole of seed in vibration plants case and with the rotation of isolated transmission band
Seed in kind of hole is fallen into point by the seed dropping hole to room.
Seed dropping hole on the isolated transmission band is corresponding with leak hole and is arranged on the upside of the conveyer belt of isolated transmission band.
The quantity of seed dropping hole on the isolated transmission band is corresponding with leak hole and symmetrical with isolated transmission tape motion direction
It is divided into the identical two parts of quantity, a portion seed dropping hole is arranged on the upside of the transmission work department of isolated transmission band, another portion
Seed dropping hole is divided to be arranged on the downside of the transmission work department of isolated transmission band.
Further, leak hole is in the quantity pair with isolated transmission with number of columns and sowing work unit on traffic direction
It answers；When the line number amount on vertical isolation conveyer belt traffic direction is sowing, 2 times of seed amount are sowed in setting to leak hole in every cave.
Described point to room include box body, the intracorporal multiple partitions of box and for the discharging tube of seeding；Wherein, box body packet
Include horizontal top and bucket shell body；Corresponding with leak hole point is provided in the horizontal top to hole；Partition setting is passed to be isolated
Send the two rows point with traffic direction arrangement between hole；The bucket type bottom that bucket shell body is arranged close to ground is arranged in discharging tube；
The quantity of the discharging tube is corresponding with to furrow quantity；Wherein, leak hole with isolated transmission on traffic direction quantity with
The quantity of discharging tube is corresponding.
Kind of the hole of depositing is circular platform type and is greater than the close point of diameter to room side close to the diameter for vibrating plants case side.
A kind of application method of isolated feed mechanism for seed, it is characterised in that：Include the following steps：
S1. it is suitable to be selected according to seed amount, kind subtype and the quantity of sowing work unit of presetting sowing in every cave
Planting slab；
S2. opening vibration plants case makes seed be in vibrational state；
S3. when seed dropping hole and the leak hole on isolated transmission band to it is corresponding when seed fallen by row from vibration plants case deposit kind of hole up to
Seed dropping hole is completely corresponding with leak hole, deposits and is filled with seed to be sowed in kind of hole；Kind of a hole will be deposited by depositing the isolated transmission band below kind of hole
Lower end closed prevents seed from falling；
S4. isolated transmission band operates forward, when on isolated transmission band deposit kind of Kong Yufen in the horizontal top into room point to
Hole to it is corresponding when deposit seed in kind of hole and fallen into point into room by dividing to hole；
S5. the seed point into room is fallen by spacers block, can only enter corresponding discharging tube, is finally discharged from discharging tube, it is complete
At seeding；
S6. start the sowing in next period.
The beneficial effects of the invention are as follows：The present invention will vibrate plants case by isolated transmission band, planting slab, divide to room one
One isolation, when on isolated transmission band seed dropping hole with vibrate the leak hole of plants case to it is corresponding when seed fallen by leak hole, seed dropping hole
Kind of a hole is deposited in kind slab, is isolated conveyer belt closing below kind of hole at this point, depositing, seed can not be fallen.With isolated transmission
The operating of band, when deposit the lower section in kind of hole and seed dropping hole to it is corresponding when deposit seed in kind of hole with seed dropping hole, point to hole fall into point to
In room, conveyer belt closing is isolated above kind of hole at this point, depositing, the seed vibrated in plants case can not interfere seeding.Knot of the present invention
Structure is simple, will sow component using isolated transmission band and be isolated with vibration plants case, and improve seeding accuracy.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention.
Fig. 2 is the right view of Fig. 1.
Fig. 3 is enlarged drawing at E in Fig. 1.
Fig. 4 is the arrangement mode of seed dropping hole on isolated transmission band.
Fig. 5 is another arrangement mode of seed dropping hole on isolated transmission band.
Fig. 6 is the front view of partition.
Specific embodiment
The present invention is further detailed with reference to the accompanying drawing.
Such as Fig. 1 ~ 3 and Fig. 6, a kind of isolated feed mechanism for seed, including for storing seed vibration plants case 1, set
It sets the activity leakage kind component 2 immediately below vibration plants case 1 and is arranged in immediately below activity leakage kind component 2 and be used to that seed to be discharged
Point to room 3；Wherein, the bottom for vibrating plants case 1 is provided with multiple leak hole 1A for planting；It is characterized in that：Activity leakage kind
Component 2 includes active live-roller 202, the passive live-roller 203,202 and of active live-roller of driving portion 201, the driving of driving portion 201
The isolated transmission band 204 and be arranged between active live-roller 202 and passive live-roller 203 that passive live-roller 203 is driven
Planting slab 205；
Wherein, in isolated transmission band 204 close to vibration 1 side of plants case conveyer belt on the upside of with vibrate the bottom surface of plants case 1 it is parallel and
1 ~ 3mm of spacing；It is parallel with the feed inlet to room 3 is divided on the downside of conveyer belt far from vibration 1 side of plants case in isolated transmission band 204 to set
It sets and 1 ~ 3mm of spacing；
Wherein, between in planting slab 205 on the upside of 205 upper surface of planting slab of vibration 1 side of plants case and conveyer belt
Distance is less than 2mm；Between on the downside of 205 lower surface of planting slab and conveyer belt far from vibration 1 side of plants case in planting slab 205
Distance be less than 2mm；
Wherein, planting slab 205, which is equipped with, deposits kind of a hole 205A with the perforation of leak hole 1A axis；It is arranged on isolated transmission band 204
Have for depositing kind of a hole 205A by falling the seed dropping hole 204A of seed in vibration plants case 1 and with the rotation of isolated transmission band 204
In seed fallen into point by seed dropping hole 204A to room 3.
It should be clear that：It the vibration plants case 1, leakage kind component 2 and point can be set on the rack to room 3,
Especially planting slab 205 also can be set on the rack, and connection type can choose the structures such as bolt.Remember although not doing herein
It states, but those skilled in the art can know according to the prior art.
It should be clear that：The bottom surface of plants case 1 is parallel and 1 ~ 3mm of spacing with vibration for isolated transmission band 204；Isolated transmission band
204 with point be arranged in parallel to the feed inlet of room 3 and 1 ~ 3mm of spacing.This distance can be adjusted according to the seed specifically sowed
Whole, distance is respectively less than the partial size of seed in principle.It can be realized at this by adjusting the thickness of planting slab 205.That is,
When in use, a variety of planting slabs 205 can be made, kind of the hole 205A that deposits thereon is carried out flexibly according to sowing seed particle size adjustment
Selection deposits kind of the minimum diameter of hole 205A and is slightly larger than seed particle size, deposit kind on planting slab 205 generally during bunch planting
The volume of hole 205A can load a seed, be not enough to load two seeds.In general, fixed vegetable seeds is with same
Property, corresponding planting slab 205 can respectively be made according to different seed particle sizes.
It should be clear that：205 upper surface of planting slab and transmission in planting slab 205 close to vibration 1 side of plants case
The distance between band upside is less than 2mm；205 lower surface of planting slab and biography far from vibration 1 side of plants case in planting slab 205
The distance between band downside is sent to be less than 2mm.This set can guarantee isolated transmission band 204 during exercise, will vibrate 1 He of plants case
Divide and be isolated entirely to room 3, prevent seed between isolated transmission band 204 and planting slab 205, guarantees reliability of the present invention.
Such as Fig. 4, the seed dropping hole 204A on isolated transmission band 204 is corresponding with leak hole 1A and isolated transmission band 204 is arranged in
On the upside of conveyer belt.
It should be clear that：Seed dropping hole 204A and leak hole 1A quantity, axis on isolated transmission band 204 is corresponding.At this point,
Whole seed dropping hole 204A are opened up together, can play buffer action when isolated transmission band 204 operates.
Such as Fig. 5, the quantity of the seed dropping hole 204A on the isolated transmission band 204 is corresponding with leak hole 1A and with isolated transmission
204 direction of motion of band is symmetrically divided into the identical two parts of quantity, and a portion seed dropping hole 204A is arranged in isolated transmission band 204
Transmission work department on the upside of, another part seed dropping hole 204A is arranged on the downside of the transmission work department of isolated transmission band 204.
Further, leak hole 1A is with the number of number of columns and sowing work unit on 204 traffic direction of isolated transmission band
Amount corresponds to；When the line number amount on 204 traffic direction of vertical isolation conveyer belt is sowing, seed is sowed in setting to leak hole 1A in every cave
2 times of quantity.
It should be clear that：Sowing work unit refers to that in seeding process, is completely completed the unit sowed.This
It is corresponding with discharging tube 303 that work unit's quantity is sowed in invention.Row of the leak hole 1A on 204 traffic direction of vertical isolation conveyer belt
When quantity is sowing 2 times of setting sowing seed amount in every cave, the reason of setting is by the quantity and leakage of seed dropping hole 204A
Hole 1A is corresponding and is symmetrically divided into the identical two parts of quantity with 204 direction of motion of isolated transmission band, so, seed dropping hole 204A only has
Half is working.
Technical solution as described in Figure 5, during sowing, half is working, and the other half is waited for, benefit
It is sowed with structure in this, sowing efficiency can be improved.
Further, divide to room 3 including multiple partitions 302 in box body 301, box body 301 and for the seeding of seeding
Pipe 303；Wherein, box body 301 includes horizontal top 3011 and bucket shell body 3012；It is provided in the horizontal top 3011 and leak hole
Corresponding point of 1A is to hole 301A；Partition 302 be arranged in the two rows point of 204 traffic direction of isolated transmission band arrangement to hole 301A it
Between；The bucket type bottom that bucket shell body 3012 is arranged close to ground is arranged in discharging tube 303；The quantity of the discharging tube 303 with wait broadcast
Kind furrow quantity is corresponding；Wherein, leak hole 1A is with the quantity of quantity and discharging tube 303 on 204 traffic direction of isolated transmission band
It is corresponding.
It should be clear that：Partition 302 can guarantee from the seed point fallen to hole 301A entrance point by rows to
In room 3, the seed number in bunch planting in every cave is consistent with the seed dropping hole 204A quantity of work, it is ensured that the accurate rate of bunch planting.
Kind of the hole 205A that deposits is circular platform type and is greater than close point to the straight of 3 side of room close to the diameter for vibrating 1 side of plants case
Diameter.
It should be clear that：Kind of the hole 205A that deposits of circular platform type facilitates seed to enter to deposit in kind of hole 205A, can be with when falling
Guarantee with seed dropping hole 204A to it is corresponding when can just fall, prevent whereabouts too early, can not dial in cave, cause spacing in the rows unqualified.
A kind of application method of isolated feed mechanism for seed, it is characterised in that：Include the following steps：
S1. it is suitable to be selected according to seed amount, kind subtype and the quantity of sowing work unit of presetting sowing in every cave
Planting slab 205；
S2. opening vibration plants case 1 makes seed be in vibrational state；
S3. when seed dropping hole 204A and the leak hole 1A on isolated transmission band 204 to it is corresponding when seed fallen by row from vibration plants case 1
Deposit kind of hole 205A until seed dropping hole 204A and leak hole 1A it is completely corresponding, deposit in kind of hole 205A and be filled with seed to be sowed；Deposit kind of a hole
Isolated transmission band 204 below 205A will deposit kind of a hole 205A lower end closed, prevent seed from falling；
S4. isolated transmission band 204 operates forward, when depositing kind of hole 205A and the level point into room 3 on isolated transmission band 204
On top plate 3011 point to hole 301A to it is corresponding when deposit seed in kind of hole 205A and fallen into point into room 3 by dividing to hole 301A；
S5. it falls into the seed point into room 3 to be stopped by partition 302, can only enter corresponding discharging tube 303, finally from discharging tube
303 discharges, complete seeding；
S6. start the sowing in next period.
It should be clear that：The description of directionality involved in this paper, is subject to Fig. 1.
It should be clear that：Technical solutions according to the invention are suitble to the bulky grains seeds such as corn and soybean.
The foregoing is merely the preferred embodiment of invention, oneself, is not intended to limit the invention, all in spirit of the invention
With any modifications, equivalent replacements, and improvements made within principle etc., should all be included in the protection scope of the present invention.
Claims (7)
1. a kind of isolated feed mechanism for seed, including the vibration plants case for storing seed（1）, setting vibration plants case（1）Underface
Activity leakage kind of a component（2）And setting leaks kind of a component in activity（2）Underface for be discharged seed point to room（3）；Its
In, vibrate plants case（1）Bottom be provided with multiple leak holes for planting（1A）；It is characterized in that：Activity leakage kind component（2）Packet
Include driving portion（201）, driving portion（201）The active live-roller of driving（202）, passive live-roller（203）, active live-roller
（202）With passive live-roller（203）The isolated transmission band of transmission（204）And it is arranged in active live-roller（202）It is passed with passive
Dynamic roller（203）Between planting slab（205）；
Wherein, isolated transmission band（204）In close to vibration plants case（1）The conveyer belt upside of side and vibration plants case（1）Bottom surface
Parallel and 1 ~ 3mm of spacing；Isolated transmission band（204）In far from vibration plants case（1）On the downside of the conveyer belt of side and divide to room（3）'s
Feed inlet is arranged in parallel and 1 ~ 3mm of spacing；
Wherein, planting slab（205）In close to vibration plants case（1）The planting slab of side（205）On the upside of upper surface and conveyer belt
The distance between be less than 2mm；Planting slab（205）In far from vibration plants case（1）The planting slab of side（205）Lower surface and biography
The distance between band downside is sent to be less than 2mm；
Wherein, planting slab（205）It is equipped with and leak hole（1A）Kind of a hole is deposited in the perforation of axis（205A）；Isolated transmission band
（204）On be provided with for by vibration plants case（1）In fall the seed dropping hole of seed（204A）And with isolated transmission band（204）
Rotation, deposit kind of a hole（205A）In seed pass through the seed dropping hole（204A）It falls into point to room（3）.
2. a kind of isolated feed mechanism for seed according to claim 1, it is characterised in that：Isolated transmission band（204）On planting
Hole（204A）With leak hole（1A）Corresponding and setting is in isolated transmission band（204）Conveyer belt on the upside of.
3. a kind of isolated feed mechanism for seed according to claim 1, it is characterised in that：Isolated transmission band（204）On planting
Hole（204A）Quantity and leak hole（1A）It corresponds to and with isolated transmission band（204）It is two identical that the direction of motion is symmetrically divided into quantity
Point, a portion seed dropping hole（204A）It is arranged in isolated transmission band（204）Transmission work department on the upside of, another part seed dropping hole
（204A）It is arranged in isolated transmission band（204）Transmission work department on the downside of.
4. a kind of isolated feed mechanism for seed according to claim 3, it is characterised in that：Leak hole（1A）With isolated transmission band
（204）Number of columns on traffic direction is corresponding with the sowing quantity of work unit；Leak hole（1A）In vertical isolation conveyer belt（204）
2 times of seed amount are sowed in setting to line number amount on traffic direction in every cave when being sowing.
5. a kind of isolated feed mechanism for seed according to claim 1, it is characterised in that：Divide to room（3）Including box body（301）,
Box body（301）Interior multiple partitions（302）And the discharging tube for seeding（303）；
Wherein, box body（301）Including horizontal top（3011）With bucket shell body（3012）；The horizontal top（3011）On be provided with
With leak hole（1A）Corresponding point to hole（301A）；
Partition（302）It is arranged with isolated transmission band（204）The two rows of traffic direction arrangement are divided to hole（301A）Between；
Discharging tube（303）Setting is in bucket shell body（3012）Close to the bucket type bottom of ground setting；The discharging tube（303）Quantity
It is corresponding with to furrow quantity；
Wherein, leak hole（1A）With isolated transmission band（204）Quantity and discharging tube on traffic direction（303）Quantity it is corresponding.
6. a kind of isolated feed mechanism for seed according to claim 1, it is characterised in that：Deposit kind of a hole（205A）For circular platform type and lean on
Nearly vibration plants case（1）The diameter of side is greater than close point to room（3）The diameter of side.
7. a kind of application method of isolated feed mechanism for seed, it is characterised in that：Include the following steps：
S1. it is suitable to be selected according to seed amount, kind subtype and the quantity of sowing work unit of presetting sowing in every cave
Planting slab（205）；
S2. vibration plants case is opened（1）Seed is set to be in vibrational state；
S3. when isolated transmission band（204）On seed dropping hole（204A）With leak hole（1A）To it is corresponding when seed from vibration plants case（1）In
It falls by row and deposits kind of a hole（205A）Until seed dropping hole（204A）With leak hole（1A）It is completely corresponding, deposit kind of a hole（205A）In be filled with wait broadcast
The seed of kind；Deposit kind of a hole（205A）The isolated transmission band of lower section（204）Kind of a hole will be deposited（205A）Lower end closed prevents seed from falling
Under；
S4. isolated transmission band（204）It operates forward, when isolated transmission band（204）On deposit kind of a hole（205A）With point to room（3）
In horizontal top（3011）On point to hole（301A）Kind of a hole is deposited to when corresponding to（205A）Interior seed is by dividing to hole（301A）
It falls into point to room（3）In；
S5. it falls into point to room（3）In seed by partition（302）Stop, can only enter corresponding discharging tube（303）, finally from
Discharging tube（303）Seeding is completed in discharge；
S6. start the sowing in next period.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810825921.XA CN108848800B (en) | 2018-07-25 | 2018-07-25 | Isolated seed sowing device and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810825921.XA CN108848800B (en) | 2018-07-25 | 2018-07-25 | Isolated seed sowing device and using method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108848800A true CN108848800A (en) | 2018-11-23 |
| CN108848800B CN108848800B (en) | 2020-04-03 |
Family
ID=64304867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810825921.XA Expired - Fee Related CN108848800B (en) | 2018-07-25 | 2018-07-25 | Isolated seed sowing device and using method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108848800B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109566004A (en) * | 2019-01-15 | 2019-04-05 | 广东工业大学 | A kind of quick coated systems of seed |
| CN110199625A (en) * | 2019-06-20 | 2019-09-06 | 山东省农业科学院作物研究所 | A kind of wheat seeder and implantation methods with raising emergence rate and strong sprout rate function |
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| CN105075474A (en) * | 2015-09-06 | 2015-11-25 | 安阳工学院 | Single-bud-section seed sowing device for sugar cane seeds |
| CN105191550A (en) * | 2015-11-10 | 2015-12-30 | 镇江佳鑫精工设备有限公司 | Automatic charging device of agricultural sowing machine |
| CN206389743U (en) * | 2017-01-05 | 2017-08-11 | 福建农林大学 | Three-roller type planting huge fungous grass machine |
| US20170367254A1 (en) * | 2010-01-18 | 2017-12-28 | Kinze Manufacturing, Inc. | Seed variety changer for a planter |
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2018
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| CN101411261A (en) * | 2008-10-27 | 2009-04-22 | 山西农业大学 | Circular groove type dither seed metering device |
| CN201374911Y (en) * | 2009-01-14 | 2010-01-06 | 杨铁钢 | Seeding apparatus |
| US20170367254A1 (en) * | 2010-01-18 | 2017-12-28 | Kinze Manufacturing, Inc. | Seed variety changer for a planter |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109566004A (en) * | 2019-01-15 | 2019-04-05 | 广东工业大学 | A kind of quick coated systems of seed |
| CN109566004B (en) * | 2019-01-15 | 2021-11-30 | 广东工业大学 | Seed quick coating system |
| CN110199625A (en) * | 2019-06-20 | 2019-09-06 | 山东省农业科学院作物研究所 | A kind of wheat seeder and implantation methods with raising emergence rate and strong sprout rate function |
| CN110199625B (en) * | 2019-06-20 | 2023-10-27 | 山东省农业科学院作物研究所 | Wheat seeder with functions of improving emergence rate and strengthening seedling rate and planting method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108848800B (en) | 2020-04-03 |
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