CN206024465U - Granule footpath seed distance between rows and hills and seed level accurate control seeding monomer - Google Patents
Granule footpath seed distance between rows and hills and seed level accurate control seeding monomer Download PDFInfo
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- CN206024465U CN206024465U CN201620464955.7U CN201620464955U CN206024465U CN 206024465 U CN206024465 U CN 206024465U CN 201620464955 U CN201620464955 U CN 201620464955U CN 206024465 U CN206024465 U CN 206024465U
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Abstract
The utility model discloses a granule footpath seed distance between rows and hills and seed level accurate control seeding monomer, including profile modeling unit and support, the one end of support is connected with the profile modeling unit, install the seed metering unit on the support, install limited dark drive land wheel unit under the support. The utility model discloses a charging seed and leading kind of a integrated device, realize the orderly seed metering of initiative, direct kind of the integrated device that leads from charging seed of seed falls into the two discs of ditching earthing, makes in the seed seeding plant spacing and seed level obtain better assurance, the relative position through adjusting the seed metering unit simultaneously, suitable plant spacing when guaranteeing the vegetables seeding to realize accurate seeding.
Description
Technical field
This utility model belongs to seeding technique field in agricultural machinery, and in particular to a kind of small particle seed distance between rows and hills with broadcast
Deep precise control planter.
Background technology
In China's growing vegetables mode, artificial broadcast needs a large amount of thinnings or fills the gaps with seedlings, and seed demand is larger and Seedling is distributed
It is uneven, to transplant behind field or factory's hole plate seedling growth and take time and effort, shoot survival percent is not high, and production cost is high；Mechanization essence amount is straight
Broadcast province and plant saving of labor, speed of drilling is fast, it is high to simplify flow chart, reduces cost, income, is the developing direction of growing vegetables.
But the high vegetable of the distance between rows and hills uniformity requirement such as Radix Raphani, Chinese cabbage, distance between rows and hills affect ontogenetic uniformity and entirety
Yield and quality, while the depth of planting of vegetable is inconsistent to affect germination and emergence seedling effect, existing mechanization precision drilling
Technology is difficult to reach requirement.On the one hand, during seeding, easily cause that seed is damaged, many seeds are difficult in adapt to, not only waste kind
Son, and Seedling emergence rate is directly affected, the discontinuity for causing field plant to be distributed, crop yield decline；On the other hand, it is existing
Kind of a method of leading be passively to lead kind, need to using actively lead kind of a technology in order, realize simple grain precision drilling, grain away from accurately, need not
Thinning is filled the gaps with seedlings；Finally, depth of planting is difficult to control to, and depth of planting affects the regularity of emergence rate and seedling vigor and colony.Cause
This, the seeding technique of small particle seed always perplexs a great problem of vast agricultural machinery technology personnel for a long time.
Utility model content
In order to overcome above-mentioned not enough this utility model to broadcast with seed level precise control there is provided a kind of small particle seed distance between rows and hills
Plant monomer.
A kind of small particle seed distance between rows and hills and seed level precise control planter, including profiling unit and support, described
One end of frame is connected with profiling unit, is provided with seeding unit, installs limited depth drivingly under the support on the support
Wheel unit.
It is perpendicular that the profiling unit includes that frame hanging plate 5, profiling crossbeam 6, profiling adjust spring 7, profiling longeron 8 and profiling
Beam 9, the pair of profiling crossbeam 7 and a pair of 8 head and the tail of profiling longeron are hinged and become a parallel-ordinal shift, the pair of
Parallel-ordinal shift is connected with profiling vertical beam 9 by frame hanging plate 5 and becomes four bars and follow an example mechanism, the frame hanging plate
5 front ends for being fixed on a pair of parallel double leval jib, one end of the profiling longeron 8 are connected with the upper and lower ends of frame hanging plate 5
Connect, an another end of the profiling longeron 8 is connected with the upper and lower ends of a pair of profiling vertical beams 9 respectively, the profiling adjusts spring 7
One end be fixed between a pair pairs of profiling longerons 8 of profiling unit bottom.
The support includes connecting plate 10, girder 11, front vertical beam 12, rear vertical beam 13, front beam 14 and rear cross beam 15, described
The side of connecting plate 10 is connected with one end of girder 11, and the opposite side of the connecting plate 10 is connected with profiling vertical beam 9, described front perpendicular
One end of beam 12 is fixed on the centrage of girder 11, and an another end of the front vertical beam 12 is connected with the middle part of front beam 14,
One end of the rear vertical beam 13 is fixed on the centrage of girder 11, an another end of the rear vertical beam 13 and the middle part of rear cross beam 15
It is connected, seeding is installed on the front vertical beam 12 and drives transition axis 16.
The seeding drives transition axis 16 to include bearing spider 18, and the bearing spider 18 is fixed on front beam 14, institute
State and transition axis 19 is installed on bearing spider 18, the transition axis 19 is interspersed on front vertical beam 13, the two ends of the transition axis 19
A pair of transition transmission input sprocket 20 is symmetrically installed with, between the transition transmission input sprocket 20, a pair of transition is symmetrically installed with
Transmission output chain gear 21.
The two ends of the front beam 14 and rear cross beam 15 are equipped with equally distributed sowing line-spacing location hole 17.
Drivingly wheel unit includes driving the deep land wheel 22 of limit, drive sprocket 23 and ground wheeling rack 24 limit deeply, describedly
Wheel support 24 is fixed on girder 11, and the ground wheeling rack 24 is connected with the deep land wheel 22 of driving limit and a pair of drive sprockets by axle
23, the drive sprocket 23 is fixed on the both sides for driving the deep land wheel 22 of limit, and the drive sprocket 23 is driven with transition by chain
Input sprocket 20 connects.
The seeding unit includes leading kind of drive sprocket 27, feed mechanism for seed fixed beam 28 and charging seed leading kind of integrating device 30, institute
State feed mechanism for seed fixed beam 28 to be fixed between front beam 14 and rear cross beam 15, be fixed with the feed mechanism for seed fixed beam 28 and just do something in a fit of pique
Pressure type feed mechanism for seed 25, the side of the positive and negative air-pressure formula feed mechanism for seed 25 are provided with feed mechanism for seed sprocket wheel 26, the feed mechanism for seed sprocket wheel 26
Output chain gear 21 is driven by chain and transition to be connected, 28 two ends of feed mechanism for seed fixed beam are provided with feed mechanism for seed positioning sleeve 29,
One end of the feed mechanism for seed positioning sleeve 29 is connected with feed mechanism for seed fixed beam 28, and the feed mechanism for seed positioning sleeve 29 is positioned with sowing line-spacing
Hole 17 uses cooperatively, and the other end of the feed mechanism for seed positioning sleeve 29 is fixed with trench digging earthing double-arc spline 31, and described charging seed leads kind of a collection
One end into device 30 is connected with positive and negative air-pressure formula feed mechanism for seed 25, described to charge seed the other end of leading kind of integrating device 30 and trench digging covers
Native double-arc spline 31 connects, and kind of the drive sprocket 27 of leading is led on kind of integrating device 30 installed in charging seed.
Described charging seed is led kind of integrating device 30 and includes floor 34, and the top of the floor 34 is provided with leads kind of drive shaft 36,
Kind of the drive shaft 36 of leading is fixed in feed mechanism for seed fixed beam 28, it is described lead to be provided with kind of drive shaft 36 lead kind of a drive sprocket
35, kind of the drive sprocket 35 of leading is connected with kind of drive sprocket 27 is led by chain, and described being led install on the outside of kind of drive sprocket 35
Lead kind and to drive a synchronous pulley 37, described leading kind drives a synchronous pulley 37 to be arranged on to lead in kind of drive shaft 36, the floor 34
Bottom is provided with leads kind of driven axle 38, it is described lead lead a kind passive and synchronous belt wheel 39, the floor 34
Both sides and top inside and outside shell 32 is installed, one end of the inside and outside shell 32 is connected with positive and negative air-pressure formula feed mechanism for seed 25, it is described in
Be fixed with shell 33 on shell 32, Timing Belt 40 be installed between the floor 34 and inside and outside shell 32, the Timing Belt 40 by
Floor 34 is supported, and is provided with and leads kind of demarcation strip 41 between the Timing Belt 40 and inside and outside shell 32, and described to lead kind of demarcation strip 41 uniform
It is distributed on 40 excircle of Timing Belt.
This utility model has the advantages that：
1st, this utility model adopts positive and negative air-pressure combined seed-sowing mechanism, can effectively reduce seed damage ratio, cost-effective, carries
Higher survival rate；
2nd, this utility model adopts four bar feeler mechanisms, realizes individual profiling, and control depth of planting is consistent；
3rd, this utility model can effectively adjust height using trench digging covering device double-arc spline, control depth of planting, realize
Precise sowing, it is ensured that Seed viability；
4th, this utility model leads kind of an integrating device using charging seed, and realizes actively seeding in order, and seed directly leads kind from charging seed
Integrating device falls into trench digging earthing double-arc spline, and in sowing seed, spacing in the rows and seed level are preferably ensured, while by adjusting
The relative position of seeding unit, it is ensured that suitable strain during sowing of vegetable is away from so as to realize precise sowing.
Description of the drawings
Fig. 1 is overall structure diagram of the present utility model；
Fig. 2 is the structural representation that kind of integrating device is led in seeding of the present utility model.
Specific embodiment
This utility model is made further instructions with reference to accompanying drawing.
A kind of small particle seed distance between rows and hills includes profiling unit and support, the support with seed level precise control planter
One end be connected with profiling unit, seeding unit is installed on the support, is installed under the support and limited deep is driven land wheel
Unit.The profiling unit includes that frame hanging plate 5, profiling crossbeam 6, profiling adjust spring 7, profiling longeron 8 and profiling vertical beam
9, the pair of profiling crossbeam 6 and a pair of 8 head and the tail of profiling longeron are hinged and become a parallel-ordinal shift, the pair of flat
Row double leval jib is connected with profiling vertical beam 9 by frame hanging plate 5 and becomes four bars and follow an example mechanism, the frame hanging plate 5
The front end of a pair of parallel double leval jib is fixed on, to connect the pull strength in front, one end of the profiling longeron 8 is hung with frame
The upper and lower ends of fishplate bar 5 are connected, and an another end of the profiling longeron 8 is connected with the upper and lower ends of a pair of profiling vertical beams 9 respectively
Connect, the profiling adjusts one end of spring 7 and is fixed between a pair pairs of profiling longerons 8 of profiling unit bottom, frame hanging plate
5th, profiling longeron 8 is linked with hinges with profiling crossbeam 6, and profiling longeron 8 is connected to one with profiling vertical beam 9.It is described
Support includes connecting plate 10, girder 11, front vertical beam 12, rear vertical beam 13, front beam 14 and rear cross beam 15, the one of the connecting plate 10
Side is connected with one end of girder 11, and the opposite side of the connecting plate 10 is connected with profiling vertical beam 9, and connecting plate 10 is welded on profiling and erects
On beam 9, one end of the front vertical beam 12 is fixed on the centrage of girder 11, an another end and the front beam 14 of the front vertical beam 12
Middle part be connected, one end of the rear vertical beam 13 is fixed on the centrage of girder 11, an another end of the rear vertical beam 13 with
The middle part of rear cross beam 15 is connected, and front beam 14, rear cross beam 15 are symmetrical, are respectively welded under front vertical beam 12 and rear vertical beam 13
Side, is provided with seeding and drives transition axis 16 on the front vertical beam 12.The seeding drives transition axis 16 to include bearing spider 18, institute
State bearing spider 18 to be fixed on front beam 14, transition axis 19 is installed on the bearing spider 18, the transition axis 19 interts
On front vertical beam 13, the two ends of the transition axis 19 are symmetrically installed with a pair of transition transmission input sprocket 20, the transition transmission
A pair of transition transmission output chain gear 21 is symmetrically installed between input sprocket 20.The two ends of the front beam 14 and rear cross beam 15 are equal
Equally distributed sowing line-spacing location hole 17 is provided with, line-spacing is controlled.Drivingly wheel unit includes driving limit deep land wheel the limit deeply
22nd, drive sprocket 23 and ground wheeling rack 24, the ground wheeling rack 24 are fixed on girder 11, and the ground wheeling rack 24 is connected by axle
The deep land wheel 22 of driving limit and a pair of drive sprockets 23 are connected to, the drive sprocket 23 is fixed on the both sides for driving the deep land wheel 22 of limit,
The drive sprocket 23 is driven input sprocket 20 by chain and transition and is connected, and drive sprocket 23 is driven with transition by Chain conveyer
Input sprocket 20 connects, and provides power for seeding unit.The seeding unit includes leading kind of drive sprocket 27, feed mechanism for seed fixed beam
28 lead kind of integrating device 30 with charging seed, and the feed mechanism for seed fixed beam 28 is fixed between front beam 14 and rear cross beam 15, the row
Plant and in device fixed beam 28, be bolted positive and negative air-pressure formula feed mechanism for seed 25, the side peace of the positive and negative air-pressure formula feed mechanism for seed 25
Equipped with feed mechanism for seed sprocket wheel 26, the feed mechanism for seed sprocket wheel 26 is driven output chain gear 21 by chain and transition and is connected, by Chain conveyer
To convey power, 28 two ends of feed mechanism for seed fixed beam are welded with feed mechanism for seed positioning sleeve 29, and the one of the feed mechanism for seed positioning sleeve 29
End is connected with feed mechanism for seed fixed beam 28, and the feed mechanism for seed positioning sleeve 29 is used cooperatively with sowing line-spacing location hole 17, by pin
Fixed by sowing line-spacing location hole 17, the other end of the feed mechanism for seed positioning sleeve 29 is fixed with trench digging earthing double-arc spline 31, described
Charge seed and lead one end of kind of integrating device 30 and be connected with positive and negative air-pressure formula feed mechanism for seed 25, described charging seed leads the another of kind of integrating device 30
End is connected with trench digging earthing double-arc spline 31, leads 30 planting mouth of kind of integrating device connection trench digging earthing double-arc spline 31 by adopting to charge seed
Technical scheme, realize the purpose of precision drilling, efficiently simple, cost-effective, trench digging earthing double-arc spline 31 is by changing support
Positioning, height can be adjusted, depth of planting is controlled, the pressure for leading kind of integrating device 30 by charging seed leads kinds so that seed standard
31 bottom of trench digging earthing double-arc spline is really directly fallen into, seed damage is not easily caused, effectively can be avoided waste, to realize simple grain essence
Amount sowing, grain are away from accurate.Kind of the drive sprocket 27 of leading is led on kind of integrating device 30 installed in charging seed.It is described charge seed lead it is kind integrated
Device 30 includes floor 34, and the top of the floor 34 is provided with leads kind of drive shaft 36, described to lead 36 row of being fixed on of kind of drive shaft
In kind of device fixed beam 28, it is described lead lead kind of drive sprocket 35, kind of the drive sprocket 35 of leading passes through
Chain is connected with kind of drive sprocket 27 is led, it is described lead drive a synchronous pulley 37, it is described
Lead kind and to drive a synchronous pulley 37 to be arranged on to lead in kind of drive shaft 36, lead kind of drive sprocket 35 and drive to lead kind driving synchronous pulley 37 even
Speed is rotated, and the bottom of the floor 34 is provided with leads kind of driven axle 38, it is described lead be provided with kind of driven axle 38 lead kind it is passive same
Step belt wheel 39, the both sides and top of the floor 34 are provided with inside and outside shell 32, one end of the inside and outside shell 32 by screw with just
Angrily pressure type feed mechanism for seed 25 connects, and has been bolted shell 33, the floor 34 and inside and outside shell on the inside and outside shell 32
Timing Belt 40 is installed between 32, the Timing Belt 40 is supported by floor 34, Timing Belt 40 is arranged on leads kind of a driving synchronous pulley
37 and lead between kind passive and synchronous belt wheel 39, seed is synchronously uniformly transported into trench digging earthing double-arc spline 31 by Timing Belt 40, real
Existing essence amount seeding, is provided between the Timing Belt 40 and inside and outside shell 32 and leads kind of demarcation strip 41, and described to lead kind of demarcation strip 41 uniform
It is distributed on 40 excircle of Timing Belt, the seed is blown into by positive and negative air-pressure feed mechanism for seed 25 and is led between kind of demarcation strip 41.
Utility model works principle is as follows：Profiling unit connects the pull strength in front, profiling list by frame hanging plate 5
Unit is four bar feeler mechanisms, controls depth of planting consistent.When precise sowing monomer is moved forward, the deep land wheel 22 of limit is driven to pass through
Chain gear transmission drives the conveying power discharge kind unit of transition axis 16 to seeding, drives the gear ratio of the deep land wheel 22 of limit and seeding unit
Can be realized by changing the method for sprocket wheel size.Seed is directly entered to charge seed after blowing out from positive and negative air-pressure formula feed mechanism for seed 25 and leads
Plant in integrating device 30, kind of the driving synchronous pulley 37 of leading led in kind of integrating device 30 of charging seed drives 40 uniform rotation of Timing Belt,
Each two on 40 excircle of Timing Belt is led, and seed is uniform under the rotation of Timing Belt 40
Directly fall in trench digging earthing double-arc spline 31,31 height of trench digging earthing double-arc spline can be adjusted.This precise sowing monomer can be with
Ensure the accurate control of line-spacing, spacing in the rows, seed level, realize precise sowing.
Claims (4)
1. a kind of small particle seed distance between rows and hills and seed level precise control planter, including profiling unit and support, its feature exists
In：One end of the support is connected with profiling unit, is provided with seeding unit, installs limited under the support on the support
Deep drivingly wheel unit；The profiling unit includes that frame hanging plate (5), profiling crossbeam (6), profiling adjust spring (7), profiling
Longeron (8) and profiling vertical beam (9), a pair of profiling crossbeams (6) be hinged with a pair of profiling longerons (8) from beginning to end become one it is parallel
Double leval jib, the pair of parallel-ordinal shift are connected with profiling vertical beam (9) by frame hanging plate (5) and become four bars and follow an example
Mechanism, frame hanging plate (5) are fixed on the front end of a pair of parallel double leval jib, and the one end of profiling longeron (8) is and machine
The upper and lower ends of frame hanging plate (5) are connected, and an another end of profiling longeron (8) is upper with a pair of profiling vertical beams (9) respectively
Lower two ends are connected, the profiling adjust one end of spring (7) be fixed on profiling unit bottom a pair of profiling longerons (8) it
Between；The support includes connecting plate (10), girder (11), front vertical beam (12), rear vertical beam (13), front beam (14) and rear cross beam
(15), the side of connecting plate (10) is connected with one end of girder (11), and opposite side and the profiling of connecting plate (10) are erected
Beam (9) connects, and the one end of front vertical beam (12) is fixed on the centrage of girder (11), an another end of front vertical beam (12)
Be connected in the middle part of front beam (14), the one end of rear vertical beam (13) is fixed on the centrage of girder (11), it is described after
One another end of vertical beam (13) is connected with the middle part of rear cross beam (15), is provided with seeding and drives transition axis on front vertical beam (12)
(16)；The seeding drives transition axis (16) to include bearing spider (18), and bearing spider (18) are fixed on front beam (14)
On, transition axis (19) is installed on bearing spider (18), transition axis (19) are interspersed on front vertical beam (13), the mistake
The two ends for crossing axle (19) are symmetrically installed with a pair of transition transmission input sprocket (20), between transition transmission input sprocket (20)
It is symmetrically installed with a pair of transition transmission output chain gear (21)；The two ends of front beam (14) and rear cross beam (15) are equipped with uniformly
Sowing line-spacing location hole (17) of distribution.
2. small particle seed distance between rows and hills and seed level precise control planter according to claim 1, it is characterised in that：It is described
The deep drivingly wheel unit of limit includes driving the deep land wheel (22) of limit, drive sprocket (23) and ground wheeling rack (24), the ground wheeling rack
(24) it is fixed on girder (11), ground wheeling rack (24) are connected with the deep land wheel (22) of driving limit and a pair of drive chains by axle
Wheel (23), drive sprocket (23) are fixed on the both sides for driving the deep land wheel (22) of limit, and described drive sprocket (23) pass through chain
It is connected with transition transmission input sprocket (20).
3. small particle seed distance between rows and hills and seed level precise control planter according to claim 2, it is characterised in that：It is described
Seeding unit includes leading kind of a drive sprocket (27), feed mechanism for seed fixed beam (28) and charging seed leading kind of an integrating device (30), the seeding
Device fixed beam (28) is fixed between front beam (14) and rear cross beam (15), is fixed with positive and negative on feed mechanism for seed fixed beam (28)
Vapour-pressure type feed mechanism for seed (25), the side of positive and negative air-pressure formula feed mechanism for seed (25) are provided with feed mechanism for seed sprocket wheel (26), the seeding
Device sprocket wheel (26) is driven output chain gear (21) by chain and transition and is connected, and feed mechanism for seed fixed beam (28) two ends are provided with row
Device positioning sleeve (29) is planted, the one end of feed mechanism for seed positioning sleeve (29) is connected with feed mechanism for seed fixed beam (28), the feed mechanism for seed is fixed
Position set (29) is used cooperatively with sowing line-spacing location hole (17), and the other end of feed mechanism for seed positioning sleeve (29) is fixed with trench digging and covers
Native double-arc spline (31), described charging seed are led one end of kind of an integrating device (30) and are connected with positive and negative air-pressure formula feed mechanism for seed (25), the throwing
Kind is led the other end of kind of an integrating device (30) and is connected with trench digging earthing double-arc spline (31), and kind of the drive sprocket (27) of leading is arranged on
Charge seed and lead on kind of an integrating device (30).
4. small particle seed distance between rows and hills and seed level precise control planter according to claim 3, it is characterised in that：It is described
Charging seed and kind of an integrating device (30) being led including floor (34), the top of floor (34) is provided with leads kind of a drive shaft (36), described
Lead kind of a drive shaft (36) to be fixed in feed mechanism for seed fixed beam (28), it is described lead to be provided with kind of a drive shaft (36) lead kind of a drive sprocket
(35), kind of the drive sprocket (35) of leading is connected with kind of a drive sprocket (27) is led by chain, described to lead kind of a drive sprocket (35)
Outside is provided with to lead kind and drives synchronous pulley (37), and described leading kind drives synchronous pulley (37) to be arranged on to lead kind of a drive shaft (36)
On, the bottom of floor (34) is provided with leads kind of a driven axle (38), it is described lead be provided with kind of a driven axle (38) lead kind it is passive
Synchronous pulley (39), the both sides and top of floor (34) are provided with inside and outside shell (32), the one end of inside and outside shell (32) with
Positive and negative air-pressure formula feed mechanism for seed (25) connects, and is fixed with shell (33), floor (34) and inside and outside shell on inside and outside shell (32)
(32) Timing Belt (40) is installed between, Timing Belt (40) are supported by floor (34), Timing Belt (40) and inside and outside shell
(32) it is provided between and leads kind of a demarcation strip (41), kind of the demarcation strip (41) of leading is evenly distributed on Timing Belt (40) excircle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620464955.7U CN206024465U (en) | 2016-05-19 | 2016-05-19 | Granule footpath seed distance between rows and hills and seed level accurate control seeding monomer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620464955.7U CN206024465U (en) | 2016-05-19 | 2016-05-19 | Granule footpath seed distance between rows and hills and seed level accurate control seeding monomer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206024465U true CN206024465U (en) | 2017-03-22 |
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ID=58312143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620464955.7U Expired - Fee Related CN206024465U (en) | 2016-05-19 | 2016-05-19 | Granule footpath seed distance between rows and hills and seed level accurate control seeding monomer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206024465U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105874974A (en) * | 2016-05-19 | 2016-08-24 | 华中农业大学 | Sowing monomer for accurately controlling row spacing and sowing depth of small grain size seeds |
| CN108834502A (en) * | 2018-06-22 | 2018-11-20 | 华南农业大学 | A kind of direct sowing on dry paddy field is followed an example seeding apparatus |
-
2016
- 2016-05-19 CN CN201620464955.7U patent/CN206024465U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105874974A (en) * | 2016-05-19 | 2016-08-24 | 华中农业大学 | Sowing monomer for accurately controlling row spacing and sowing depth of small grain size seeds |
| CN108834502A (en) * | 2018-06-22 | 2018-11-20 | 华南农业大学 | A kind of direct sowing on dry paddy field is followed an example seeding apparatus |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170322 Termination date: 20190519 |