CN109964605A - Triangle determines cave device on ridge before a kind of transplanting of cigarette strain - Google Patents
Triangle determines cave device on ridge before a kind of transplanting of cigarette strain Download PDFInfo
- Publication number
- CN109964605A CN109964605A CN201910315814.7A CN201910315814A CN109964605A CN 109964605 A CN109964605 A CN 109964605A CN 201910315814 A CN201910315814 A CN 201910315814A CN 109964605 A CN109964605 A CN 109964605A
- Authority
- CN
- China
- Prior art keywords
- locating rod
- powder hopper
- position line
- cigarette strain
- drum
- 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.)
- Granted
Links
- 235000019504 cigarettes Nutrition 0.000 title claims abstract description 74
- 239000000843 powder Substances 0.000 claims abstract description 44
- 235000019738 Limestone Nutrition 0.000 claims description 11
- 239000006028 limestone Substances 0.000 claims description 11
- 230000004323 axial length Effects 0.000 claims description 3
- 238000009738 saturating Methods 0.000 claims description 3
- 238000007373 indentation Methods 0.000 claims description 2
- 239000002689 soil Substances 0.000 description 14
- 241000208125 Nicotiana Species 0.000 description 7
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 238000001467 acupuncture Methods 0.000 description 3
- 238000010009 beating Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C14/00—Methods or apparatus for planting not provided for in other groups of this subclass
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Manufacture Of Tobacco Products (AREA)
- Soil Working Implements (AREA)
Abstract
The present invention relates to triangles on the ridge before a kind of transplanting of cigarette strain to determine cave device, the moving trolley of positioning case is equipped with including top, shaft is provided along its length in positioning case, both ends of the shaft is set in the sleeve on positioning chamber interior wall, equidistantly at least three or more are coaxially installed in shaft and are the drum of Odd number, circumferentially coiling has position line on drum, corresponded in positioning case opened up at each drum it is jagged, the free end of position line passes through that corresponding notch is vertical with guide pile connect, locating rod is equipped in every position line, fixed lantern ring and position line clearance fit at the top of locating rod, the locating rod is intertwined and the kernel of section line of any three adjacent locating rods is isosceles triangle, powder hopper is equipped in all locating rods at same position, it is connected with each other between powder hopper by first connecting rod.The present invention quickly can carry out determining cave operation to a plurality of cigarette ridge, while also can guarantee that hill spacing meets the spacing in the rows requirement of cigarette strain plantation.
Description
Technical field
The invention belongs to triangles on the ridge before tobacco planting apparatus field more particularly to a kind of transplanting of cigarette strain to determine cave device.
Background technique
With the implementation of every fine-grained management measure of tobacco field planting, the credit rating of the current field tobacco leaf in China
Also it is constantly being promoted, one of them are exactly to carry out accurate control to the line-spacing and spacing in the rows of cigarette strain, under normal circumstances the line-spacing of cigarette strain
Spacing in the rows for 1.2m, cigarette strain is 55cm, while three cigarette strains adjacent on two cigarette ridges are interspersed, so being capable of maximum limit
Spend the absorption of non-interference underground nutritional ingredient.Certainly according to differences, spacing in the rows and rows such as cigarette strain kind such as flue-cured tobacco, sunning cigarettes
Away from also different, but no matter which kind of cigarette strain, for tobacco seedlings before field-transplanting, it is fixed to need to carry out triangle to the cigarette ridge in crop field
Cave operation determines the transplanting acupuncture point place of every cigarette strain, to meet the spacing in the rows and line-spacing requirement of cigarette strain.The prior art mainly adopts
Drawstring point ash method, the i.e. vertical direction Yan Long draw a straight rope, are then skipped behind a cigarette ridge by peasant household to restricting on adjacent cigarette ridge
Body middle section location point ash is cigarette cave, then by after a half value of straight rope translation spacing in the rows, again to front jumping every cigarette ridge it is corresponding
Place carries out an ash, repeatedly operation.On the one hand peasant household that this mode is responsible for point ash needs continuous stoop labor, working strength
Greatly, and whole process needs at least three people cooperation, while entire operation process is also more rough, controls not accurate；Existing skill
Some vehicle wheel spoke formula acupoint hitting devices are also disclosed in art, such as Publication No. CN205961760U；CN107996090A；
The patent documents such as CN205196293U are substantially and carry out spacing in the rows positioning to single cigarette ridge, although structure is simple, due to
Cigarette ridge uses mechanization ridging, and an annual ridging, ridge face is uneven, and soil property is soft, and above-mentioned acupoint hitting device on ridge when moving
It is difficult to ensure that the cigarette strain for moving, while being also unable to ensure on adjacent cigarette ridge along cigarette ridge width centreline is distributed in isosceles triangle,
And the acupoint hitting device is when moving, and soil its spoke motion track in cigarette ridge is circle, can throw the soil at cigarette cave and raise, add
Soil property it is soft, it is easy to cause the cigarette cave just made to be covered by soil that periphery is collapsed and be beyond recognition, while spoke is inserted into
The depth of soil is also unable to ensure, and practicability is poor in general.
Summary of the invention
The object of the present invention is to provide triangles on the ridge before a kind of transplanting of cigarette strain to determine cave device, and the present invention can be quickly to more
Cigarette ridge carries out determining cave operation, while also can guarantee that hill spacing meets the spacing in the rows requirement of cigarette strain plantation.
In order to solve the above technical problems, The technical solution adopted by the invention is as follows:
Triangle determine cave device on ridge before a kind of transplanting of cigarette strain, and described device includes moving trolley, is equipped with calmly at the top of moving trolley
Position case is provided along its length shaft in positioning case, and both ends of the shaft is set in the sleeve on positioning chamber interior wall, in shaft etc.
Spacing is coaxially installed at least three or more and is the drum of Odd number, and circumferentially coiling on drum has position line, in positioning case
Open up jagged at corresponding each drum, the free end of position line passes through that corresponding notch is vertical with guide pile to be connect, and every calmly
Locating rod, the fixed lantern ring in locating rod top and position line clearance fit, the interlaced row of locating rod are equipped on bit line
Column and the kernel of section line of any three adjacent locating rods are isosceles triangle, are set at same position in all locating rods
There is powder hopper, is connected with each other between powder hopper by first connecting rod.
Preferably, the shaft in the sleeve is equipped with scroll spring, and scroll spring one end is connect with sleeve lining, another
End is connect with roller end.
Preferably, the guide pile includes prolonging vertically downward with position line fixed plate connected vertically and fixed board ends
The bundle bar stretched.
Preferably, the indentation, there is equipped with the two opposite deashing curtains for squeezing position line, and the deashing curtain is made of rubber slab.
Preferably, the quantity of the drum is arranged in a straight line, institutes of the locating rod in two rows in parallel in seven and position line
Locating rod is stated in the sharp circular cone column in bottom, the powder hopper is in up big and down small and upper and lower saturating inverted round stage tubulose all, positioning
Bar passes through powder hopper and powder hopper bottom nozzle internal diameter is identical as locating rod axial length middle section outer diameter.
Preferably, the powder hopper outer wall in the same straight line locating rod is connected by first connecting rod, connects two rows of powder hoppers
The second connecting rod connection being parallel to each other between first connecting rod by two, is vertically equipped with lifting rod on two second connecting rods, and two
Lifting plate is equipped at the top of lifting rod.
Preferably, pulverized limestone is contained in the powder hopper.
The course of work of the present invention is as follows:
When the present invention is under off working state, scroll spring acts on shaft, so that drum is kept to position line in shaft
Tightening state, guide pile and locating rod are tensed and sticked in positioning case by position lines this moment, at the same need to be held in position bar with
Corresponding powder hopper bottom nozzle is in tensioning state, so that positioning rod seal powder hopper bottom nozzle, prevents pulverized limestone from leaking out.
The present invention is moved to by tobacco field suitable position by moving trolley using preceding, then guide pile is pulled to make position line
It is pulled out from drum, which can make drum and shaft rotate and make scroll spring further occurrence deformation, until positioning
Line can not pull out again, then penetrate ground using the bundle bar of guide pile, so that the immediate status of fixed plate stationary positioned line, this moment
Position line is in tensioned state and vertically across several cigarette ridge.Then powder hopper is moved by lifting strip and all locating rods is logical
It crosses the lantern ring that its top is arranged to move along position line, when locating rod is moved to cigarette ridge width direction midpoint, (cigarette strain line-spacing is by cigarette
Ridge row spacing determines that cigarette ridge in the prior art mostly uses mechanical ridging, so cigarette strain line-spacing can be adjusted in ridging, when determining cave
It need to only guarantee that the array pitch of two rows of locating rods is row spacing in cigarette row spacing degree midpoint, and in the present invention in cave, as long as so one
Row's locating rod is directed at the width midpoint on current cigarette ridge, then another row's locating rod is also directed at the width midpoint on adjacent cigarette ridge), by mentioning
Pulling plate drives powder hopper and locating rod to move up and tighten position line once again, then looses one's grip, and locating rod is in self weight and positions linear elasticity work
Yan Long is moved down and penetrated under, it is then slight again to push lifting plate, so that lifting rod drives powder hopper to move down along locating rod, so that powder
Gap is generated between bucket bottom nozzle and locating rod, pulverized limestone can fall to the cigarette ridge soil from locating rod from the gap
On, then upper lifting plate, positioning column is extracted from soil, while locating rod blocks powder hopper under Gravitative Loads, then again
It is secondary to carry out determining the cave operation (cave of the most edge preferably above for once beating cave along position line running fix bar to next place's cigarette ridge
Position, which is used as, determines cave benchmark).In this way, the position of each pulverized limestone mark is that cigarette acupuncture point is set, the entire operation process of the present invention all without
It need to bend over, considerably reduce the labor intensity of operator.
Since locating rod needs to contact with soil for a long time, it needs constant weight in addition, so preferably irony material
Material, in the contradiction for weighing both operation intensity and operating efficiency, so the quantity of locating rod, position line and drum is set as
7 relatively reasonable, and women user can also operate it and carry out long working.Powder hopper can adopt made of plastic, Er Qiexu
Pulverized limestone is supplemented to powder hopper inside in time.
After cave is determined on the cigarette ridge within the scope of position line, guide pile is extracted, scroll spring drives shaft and drum rotation
It resets, position line pulls positioning column and guide pile to reset, and position line is coiled on drum again, and position line is entering positioning
During in case, the effect of scraping of the pressure by deashing curtain can remove the soil being infected in position line, be held in position clear in case
It is clean.Then along cigarette ridge, length direction moves the present invention, repeats aforesaid operations and continues positioning to cigarette ridge.
Compared with the prior art, the invention has the following advantages: the present invention can quickly carry out a plurality of cigarette ridge determining cave work
Industry, while also can guarantee that hill spacing meets the spacing in the rows requirement of cigarette strain plantation, and the labor intensity of operator is greatly lowered.
Detailed description of the invention
Fig. 1 determines the structural schematic diagram of cave device for triangle on the ridge before cigarette strain transplanting in specific embodiment；
Fig. 2 is the structural schematic diagram of drum in specific embodiment.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
As shown in Figs. 1-2, triangle determines cave device on the ridge before a kind of cigarette strain transplanting, and described device includes moving trolley 1, is moved
It is equipped with positioning case 2 at the top of dynamic trolley 1, is provided along its length shaft 3 in positioning case 2,3 both ends of shaft are set in positioning case
In sleeve (being not drawn into figure) on wall, the shaft in sleeve is equipped with scroll spring (being not drawn into figure), scroll spring one end
It is connect with sleeve lining, the other end is connect with roller end；
Equidistantly at least three or more are coaxially installed in shaft 3 and is the drum 31 of Odd number, are circumferentially coiled on drum 31
There is position line 32, is corresponded in positioning case 2 and open up jagged 21 at each drum 31, the free end of position line 32 passes through corresponding lack
Mouth 21 is vertical with guide pile to be connect, and the guide pile includes and the fixed plate 4 connected vertically of position line 32 and 4 both ends of fixed plate
The bundle bar 41 extended vertically downward is equipped with the two opposite deashing curtains 22 for squeezing position lines 32, the deashing curtain at the notch 21
22 are made of rubber slab；
Locating rod 5,5 top of locating rod fixed lantern ring 56 and 32 clearance fit of position line, institute are equipped in every position line 32
State locating rod 5 be intertwined and the kernel of section line of any three adjacent locating rods 5 be isosceles triangle, Suo Youding
Powder hopper 51 is equipped on the bar 5 of position at same position, is connected with each other between powder hopper 51 by first connecting rod 52.
The quantity of the drum 31 is locating rod 5 in seven and position line 32 in two rows of parallel arranged in a straight line, described
For locating rod 5 in the sharp circular cone column in bottom, the powder hopper 51 is fixed in up big and down small and upper and lower saturating inverted round stage tubulose all
Position bar 5 passes through powder hopper 51 and 51 bottom nozzle internal diameter of powder hopper is identical as 5 axial length middle section outer diameter of locating rod.It is described with always
51 outer wall of powder hopper in line locating rod is connected by first connecting rod 52, is connected and is passed through two phases between the first connecting rod of two rows of powder hoppers
Mutually parallel second connecting rod 53 connects, and lifting rod 54 is vertically equipped on two second connecting rods 53, is equipped at the top of two lifting rods 54
Lift plate 55.Pulverized limestone is contained in the powder hopper 51.
The course of work of the present invention is as follows:
When the present invention is under off working state, scroll spring acts on shaft, so that drum is kept to position line in shaft
Tightening state, guide pile and locating rod are tensed and sticked in positioning case by position lines this moment, at the same need to be held in position bar with
Corresponding powder hopper bottom nozzle is in tensioning state, so that positioning rod seal powder hopper bottom nozzle, prevents pulverized limestone from leaking out.
The present invention is moved to by tobacco field suitable position by moving trolley using preceding, then guide pile is pulled to make position line
It is pulled out from drum, which can make drum and shaft rotate and make scroll spring further occurrence deformation, until positioning
Line can not pull out again, then penetrate ground using the bundle bar of guide pile, so that the immediate status of fixed plate stationary positioned line, this moment
Position line is in tensioned state and vertically across several cigarette ridge.Then powder hopper is moved by lifting strip and all locating rods is logical
It crosses the lantern ring that its top is arranged to move along position line, when locating rod is moved to cigarette ridge width direction midpoint, (cigarette strain line-spacing is by cigarette
Ridge row spacing determines that cigarette ridge in the prior art mostly uses mechanical ridging, so cigarette strain line-spacing can be adjusted in ridging, when determining cave
It need to only guarantee that the array pitch of two rows of locating rods is row spacing in cigarette row spacing degree midpoint, and in the present invention in cave, as long as so one
Row's locating rod is directed at the width midpoint on current cigarette ridge, then another row's locating rod is also directed at the width midpoint on adjacent cigarette ridge), by mentioning
Pulling plate drives powder hopper and locating rod to move up and tighten position line once again, then looses one's grip, and locating rod is in self weight and positions linear elasticity work
Yan Long is moved down and penetrated under, it is then slight again to push lifting plate, so that lifting rod drives powder hopper to move down along locating rod, so that powder
Gap is generated between bucket bottom nozzle and locating rod, pulverized limestone can fall to the cigarette ridge soil from locating rod from the gap
On, then upper lifting plate, positioning column is extracted from soil, while locating rod blocks powder hopper under Gravitative Loads, then again
It is secondary to carry out determining the cave operation (cave of the most edge preferably above for once beating cave along position line running fix bar to next place's cigarette ridge
Position, which is used as, determines cave benchmark).In this way, the position of each pulverized limestone mark is that cigarette acupuncture point is set, the entire operation process of the present invention all without
It need to bend over, considerably reduce the labor intensity of operator.
Since locating rod needs to contact with soil for a long time, it needs constant weight in addition, so preferably irony material
Material, in the contradiction for weighing both operation intensity and operating efficiency, so the quantity of locating rod, position line and drum is set as
7 relatively reasonable, and women user can also operate it and carry out long working.Powder hopper can adopt made of plastic, Er Qiexu
Pulverized limestone is supplemented to powder hopper inside in time.
After cave is determined on the cigarette ridge within the scope of position line, guide pile is extracted, scroll spring drives shaft and drum rotation
It resets, position line pulls positioning column and guide pile to reset, and position line is coiled on drum again, and position line is entering positioning
During in case, the effect of scraping of the pressure by deashing curtain can remove the soil being infected in position line, be held in position clear in case
It is clean.Then along cigarette ridge, length direction moves the present invention, repeats aforesaid operations and continues positioning to cigarette ridge.
Claims (7)
1. triangle determines cave device on the ridge before a kind of cigarette strain transplanting, which is characterized in that described device includes moving trolley, and movement is small
Roof is equipped with positioning case, and shaft is provided along its length in positioning case, and both ends of the shaft is set to the set on positioning chamber interior wall
In cylinder, equidistantly at least three or more are coaxially installed in shaft and is the drum of Odd number, circumferentially coils to have on drum and determine
Bit line corresponds in positioning case and opens up jagged at each drum, and the free end of position line passes through corresponding notch and guide pile hangs down
It is direct-connected to connect, locating rod, the fixed lantern ring in locating rod top and position line clearance fit, the positioning are equipped in every position line
Bar is intertwined and the kernel of section line of any three adjacent locating rods is isosceles triangle, in all locating rods in
It is equipped with powder hopper at same position, is connected with each other between powder hopper by first connecting rod.
2. triangle determines cave device on the ridge before cigarette strain transplanting as described in claim 1, which is characterized in that turn in the sleeve
Axis is equipped with scroll spring, and scroll spring one end is connect with sleeve lining, and the other end is connect with roller end.
3. triangle determines cave device on the ridge before cigarette strain as described in claim 1 transplanting, which is characterized in that the guide pile includes
The bundle bar extended vertically downward with position line fixed plate connected vertically and fixed board ends.
4. triangle determines cave device on the ridge before cigarette strain transplanting as described in claim 1, which is characterized in that the indentation, there is equipped with
The two opposite deashing curtains for squeezing position line, the deashing curtain are made of rubber slab.
5. triangle determines cave device on the ridge before cigarette strain transplanting as described in claim 1, which is characterized in that the quantity of the drum
Arranged in a straight line, the locating rod circular cone columns sharp in bottom for the locating rod in seven and position line in two rows in parallel,
The powder hopper passes through powder hopper and powder hopper bottom nozzle internal diameter in up big and down small and upper and lower saturating inverted round stage tubulose all, locating rod
It is identical as locating rod axial length middle section outer diameter.
6. triangle determines cave device on the ridge before cigarette strain transplanting as claimed in claim 5, which is characterized in that the same straight line is fixed
Powder hopper outer wall on the bar of position is connected by first connecting rod, is parallel to each other between the first connecting rod of the two rows of powder hoppers of connection by two
Second connecting rod connects, and lifting rod is vertically equipped on two second connecting rods, is equipped at the top of two lifting rods and lifts plate.
7. triangle determines cave device on the ridge before cigarette strain transplanting as claimed in claim 5, which is characterized in that held in the powder hopper
There is pulverized limestone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910315814.7A CN109964605B (en) | 2019-04-19 | 2019-04-19 | Triangular hole positioning device on ridge before tobacco plant transplanting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910315814.7A CN109964605B (en) | 2019-04-19 | 2019-04-19 | Triangular hole positioning device on ridge before tobacco plant transplanting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109964605A true CN109964605A (en) | 2019-07-05 |
| CN109964605B CN109964605B (en) | 2023-12-22 |
Family
ID=67085310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910315814.7A Active CN109964605B (en) | 2019-04-19 | 2019-04-19 | Triangular hole positioning device on ridge before tobacco plant transplanting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109964605B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111727708A (en) * | 2020-08-03 | 2020-10-02 | 山东农业大学 | Device for assisting field crop seeding by accurately adjusting density and using method |
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|---|---|---|---|---|
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| EP2471353A1 (en) * | 2010-12-30 | 2012-07-04 | Philip Morris Products S.A. | A method of growing tobacco plants |
| CN205196295U (en) * | 2015-12-17 | 2016-05-04 | 宝鸡市农业科学研究所 | Professional jargon ware |
| CN205794052U (en) * | 2016-07-20 | 2016-12-14 | 新疆畜牧科学院草业研究所 | A kind of plant/line spacing actuator |
| CN107852920A (en) * | 2017-12-03 | 2018-03-30 | 李红光 | A kind of peanut seeding determines cave device |
| CN207219371U (en) * | 2017-09-28 | 2018-04-13 | 贵州省烟草公司毕节市公司 | A kind of recessed ridge plant spacing localizer of flue-cured tobacco transplanting duplicate rows |
| CN208227631U (en) * | 2018-05-30 | 2018-12-14 | 德州市农业科学研究院 | A kind of onion planting device |
| CN109168436A (en) * | 2018-08-24 | 2019-01-11 | 中国烟草总公司重庆市公司巫溪分公司 | A kind of adjustable tobacco seedlings precisely determine cave device |
| CN208425175U (en) * | 2018-06-20 | 2019-01-25 | 河南省烟草公司平顶山市公司 | A kind of tobacco planting cigarette ridge point digger |
| CN209983082U (en) * | 2019-04-19 | 2020-01-24 | 河南省烟草公司平顶山市公司 | Triangular hole positioning device on ridge before tobacco plant transplanting |
-
2019
- 2019-04-19 CN CN201910315814.7A patent/CN109964605B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BRMU9000397U2 (en) * | 2010-03-19 | 2012-01-10 | Nilton Oliveira Francisco | tobacco crop farm tractor |
| EP2471353A1 (en) * | 2010-12-30 | 2012-07-04 | Philip Morris Products S.A. | A method of growing tobacco plants |
| CN205196295U (en) * | 2015-12-17 | 2016-05-04 | 宝鸡市农业科学研究所 | Professional jargon ware |
| CN205794052U (en) * | 2016-07-20 | 2016-12-14 | 新疆畜牧科学院草业研究所 | A kind of plant/line spacing actuator |
| CN207219371U (en) * | 2017-09-28 | 2018-04-13 | 贵州省烟草公司毕节市公司 | A kind of recessed ridge plant spacing localizer of flue-cured tobacco transplanting duplicate rows |
| CN107852920A (en) * | 2017-12-03 | 2018-03-30 | 李红光 | A kind of peanut seeding determines cave device |
| CN208227631U (en) * | 2018-05-30 | 2018-12-14 | 德州市农业科学研究院 | A kind of onion planting device |
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| CN109168436A (en) * | 2018-08-24 | 2019-01-11 | 中国烟草总公司重庆市公司巫溪分公司 | A kind of adjustable tobacco seedlings precisely determine cave device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111727708A (en) * | 2020-08-03 | 2020-10-02 | 山东农业大学 | Device for assisting field crop seeding by accurately adjusting density and using method |
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| Publication number | Publication date |
|---|---|
| CN109964605B (en) | 2023-12-22 |
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