CN112470622A - Grass seed hollow rubber wheel extrusion type seed sowing device - Google Patents
Grass seed hollow rubber wheel extrusion type seed sowing device Download PDFInfo
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- CN112470622A CN112470622A CN202011338391.XA CN202011338391A CN112470622A CN 112470622 A CN112470622 A CN 112470622A CN 202011338391 A CN202011338391 A CN 202011338391A CN 112470622 A CN112470622 A CN 112470622A
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- rubber wheel
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- 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
- A01C7/16—Seeders with other distributing devices, e.g. brushes, discs, screws or slides
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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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Abstract
The invention discloses a gramineous grass seed hollow rubber wheel extrusion type seed sowing device, and belongs to the field of seed sowing devices. Grass seed hollow rubber wheel extrusion formula seed metering ware of Gramineae includes: the storage box is provided with a discharge hole; the discharging wheel is rotationally connected to the material storage box and is positioned at the lower end of the discharge port, and a discharging groove is formed in the discharging wheel; the hollow extrusion rubber wheel is rotatably connected to the material storage box and is positioned at the lower end of the discharge port, a hollow groove is formed in the hollow extrusion rubber wheel, and a gas guide port is formed in one end, facing the discharge groove, of the hollow groove; this send out through having set up row material wheel, hollow extrusion rubber wheel and can arrange the material to the grass seed, the interval of the grass seed of being convenient for, drop in order, simultaneously through the setting of hollow groove and mount, can blow the grass seed of arranging in the material groove, prevent that grass seed pressurized from damaging and paste on row material board, set up the pivoted simultaneously and rotate the baffle, can carry out intermittent type material loading and the grass seed of being convenient for is ventilative, the heat dissipation to the grass seed.
Description
Technical Field
The invention relates to the technical field of seed sowing devices, in particular to a grass seed hollow rubber wheel extrusion type seed sowing device for gramineae.
Background
Gramineae, also known as precocity gramineae, is a monocotyledon of gramineae, and is divided into more than 620 genera and more than 10000 genera, more than 190 genera are about 1200 genera in China, and gramineae contains many important food crops and also has many high plants.
When grass seeds of the gramineae are planted, the seed sowing device is mostly adopted to sow the grass seeds at equal intervals, the pressure is inconvenient to adjust according to the size and the type of the grass seeds during seed sowing, the grass seeds are easy to damage by the extrusion of the seed sowing wheel, the survival rate of the seeds is influenced, and the planting effect is further influenced; and damaged seeds are easily extruded and attached to the seeding device, so that the seeding device is blocked, and the planting effect is influenced.
Disclosure of Invention
The invention aims to solve the problems that when grass seeds of the grass family are planted, a seed sowing device is mostly adopted for sowing seeds at equal intervals, the pressure is inconvenient to adjust according to the size and the type of the grass seeds during seed sowing, the grass seeds are easy to damage due to extrusion of a seed sowing wheel, the survival rate of the seeds is influenced, and the planting effect is further influenced; and the damaged seeds are easy to be extruded and attached on the seeding apparatus, so that the seeding apparatus is blocked and the planting effect is influenced, and the provided grass seed hollow rubber wheel extrusion type seeding apparatus for the gramineae is provided.
In order to achieve the purpose, the invention adopts the following technical scheme:
grass seed hollow rubber wheel extrusion formula seed metering ware of Gramineae includes: the storage box is provided with a discharge hole; the discharging wheel is rotationally connected to the material storage box and is positioned at the lower end of the discharge port, and a discharging groove is formed in the discharging wheel; the hollow extrusion rubber wheel is rotatably connected to the material storage box and is positioned at the lower end of the discharge port, a hollow groove is formed in the hollow extrusion rubber wheel, and a gas guide port is formed in one end, facing the discharge groove, of the hollow groove; the fixing frame is fixedly connected to the material storage box and is rotationally connected with the hollow extrusion rubber wheel; the air storage tank is arranged in the fixed frame, an air inlet is arranged in the air storage tank, a sliding plate is connected in the air storage tank in a sliding mode, and one side of the sliding plate is connected with the fixed frame through an elastic rope; the connecting grooves are communicated with the plurality of gas storage grooves and the hollow grooves, so that gas in the gas storage grooves enters the hollow grooves through the connecting grooves and is discharged; and the magnetic disc is fixedly connected to the hollow extrusion rubber wheel and is magnetically attracted with the sliding plate.
Preferably, the fixing frame is provided with a gas outlet, two ends of the gas outlet are respectively communicated with the gas storage groove and the connecting groove, the fixing frame and the hollow extrusion rubber wheel are respectively provided with a gas outlet groove, and the gas outlet grooves are used for connecting the hollow grooves and the connecting groove.
Preferably, the air outlet and the air inlet are both provided with one-way valves.
Preferably, the discharging wheel is connected with a discharging plate in a sliding mode, one end of the discharging plate is fixedly connected with a discharging spring, one end, far away from the discharging plate, of the discharging spring is fixedly connected to the discharging wheel, the discharging wheel is connected with a driving disc in a threaded mode, the driving disc is fixedly connected with a discharging rope, and one end, far away from the driving disc, of the discharging rope is fixedly connected to the discharging plate.
Preferably, the lower end of the storage box is fixedly connected with a material baffle plate, and the material discharging wheel and the hollow extrusion rubber wheel are arranged in the material baffle plate.
Preferably, a driving handle is fixedly connected to the driving disc and penetrates through the striker plate.
Preferably, sliding connection has the slip scraper blade on the storage case, the lower extreme and the relief wheel of slip scraper blade, the relief plate phase-match, the upper end fixedly connected with scraper blade spring of slip scraper blade, the one end fixed connection that the slip scraper blade was kept away from to the scraper blade spring is on the storage case.
Preferably, the striker plate is connected with the rotation baffle in a rotating manner, the one end fixedly connected with scraper rope of rotation baffle, the one end fixed connection that the rotation baffle was kept away from to the scraper rope is on the slip scraper blade, fixedly connected with U type shell fragment on the slip scraper blade, the one end fixed connection that the slip scraper blade was kept away from to U type shell fragment is on the striker plate.
Preferably, the discharge gate is connected with the regulating plate in the rotation, fixedly connected with connector link on the scraper rope, the connector link pastes with the regulating plate, the regulating plate is located the upper end of rotating the baffle.
Preferably, the device also comprises a tension spring, and two ends of the tension spring are respectively connected to the discharging wheel and the hollow extrusion rubber wheel.
Compared with the prior art, the invention provides a gramineous grass seed hollow rubber wheel extrusion type seed sowing device, which has the following beneficial effects:
1. according to the grass seed hollow rubber wheel extrusion type seed sowing device for the gramineous grass seeds, the driving device such as the motor can drive the discharge plate to rotate, the hollow extrusion rubber wheel can rotate under the extrusion and friction effects of the discharge plate and the hollow extrusion rubber wheel, the hollow extrusion rubber wheel can extrude the grass seeds, the grass seeds are prevented from being damaged, and the grass seeds are fixed;
when the discharge plate rotates, grass seeds can fall into the discharge groove;
under the action of a scraper spring, the sliding scraper is always attached to the discharge wheel or the discharge plate, the lower end of the sliding scraper is a conical plate, and the sliding scraper can scrape possible residual grass seeds on the discharge plate, clean the grass seeds and prevent the grass seeds from blocking a discharge groove;
when the sliding scraper is attached to the discharge wheel and the discharge plate, the sliding scraper can slide up and down to enable the sliding scraper to pull the scraper rope to slide, the scraper rope pulls the rotating partition plates to rotate, and the U-shaped elastic pieces which are convenient for the rotating partition plates to rotate and reset are arranged to enable the two rotating partition plates to be far away from or close to each other, so that grass seeds can fall off, and intermittent feeding is convenient for the discharge groove;
when the scraper rope slides, the connecting buckle can be driven to pull the adjusting plate to rotate, the torsional spring can be arranged on the adjusting plate so as to facilitate the resetting of the adjusting plate, and when the adjusting plate rotates, grass seeds at a discharge port on the storage box can fluctuate so as to prevent the grass seeds from hardening and blocking and facilitate the falling of the grass seeds;
when the hollow extrusion rubber wheel rotates, the magnetic disc on the hollow extrusion rubber wheel rotates and drives the sliding plate to rotate, when the hollow extrusion rubber wheel is close to the sliding plate, the sliding plate is driven to rotate so as to extrude gas in the gas storage tank to enter the hollow tank and be discharged, when the gas is discharged, grass seeds in the discharge tank can be blown so as to prevent the grass seeds from being hardened in the discharge tank, when the magnetic disc is not close to the sliding plate, the sliding plate resets under the action of the elastic rope, and external gas can enter the gas storage tank through the gas inlet;
the device is not related to the part and all is the same with prior art or can adopt prior art to realize, this send out through having set up row material wheel, the hollow extrusion rubber wheel can arrange the material to the grass seed, the interval of the grass seed of being convenient for, drop in order, simultaneously through the setting of hollow groove and mount, can blow to arranging the grass seed of inslot, prevent grass seed pressurized damage and paste on row material board, the pivoted rotates the baffle simultaneously, can carry out intermittent type material loading and be convenient for the grass seed ventilative to the grass seed, the heat dissipation.
Drawings
FIG. 1 is a first schematic structural view of the grass seed hollow rubber wheel extrusion type seed sowing device of the grass family provided by the invention;
FIG. 2 is a second schematic structural view of the grass seed hollow rubber wheel extrusion type seed metering device of the grass family provided by the present invention;
FIG. 3 is a third schematic structural view of the grass seed hollow rubber wheel extrusion type seed sowing device of the grass family provided by the present invention;
FIG. 4 is a schematic structural view of part A in FIG. 3 of the grass seed hollow rubber wheel extrusion type seed metering device in the family of Gramineae provided by the present invention;
FIG. 5 is a schematic structural view of part B in FIG. 3 of the grass seed hollow rubber wheel extrusion type seed metering device of the present invention;
FIG. 6 is a schematic structural view of a portion C in FIG. 3 of the grass seed hollow rubber wheel extrusion type seed sowing device in the family of Gramineae provided by the present invention;
FIG. 7 is a schematic sectional structure view of the grass seed hollow rubber wheel extrusion type seed sowing device of the grass family provided by the invention.
In the figure: 1. a material storage box; 101. tensioning the spring; 102. a striker plate; 2. a discharge wheel; 201. a discharge plate; 202. discharging the springs; 203. a discharge rope; 204. a drive disc; 2041. a drive handle; 3. hollow extrusion of rubber wheels; 301. a hollow groove; 302. a magnetic disk; 4. a fixed mount; 401. an air storage tank; 402. a sliding plate; 403. an elastic cord; 404. connecting grooves; 4041. an air outlet; 4042. an air outlet groove; 5. a sliding blade; 501. a blade spring; 502. a scraper rope; 503. rotating the partition plate; 504. a U-shaped elastic sheet; 505. a connecting buckle; 506. an adjusting plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Example (b):
referring to fig. 1 to 7, the grass seed hollow rubber wheel extrusion type seed sowing device of the grass family comprises: the storage box 1 is provided with a discharge hole; the discharging wheel 2 is rotatably connected to the material storage box 1 and is positioned at the lower end of the discharging port, and a discharging groove is formed in the discharging wheel 2; the hollow extrusion rubber wheel 3 is rotatably connected to the lower end of the material storage tank 1 and positioned at the material outlet, a hollow groove 301 is formed in the hollow extrusion rubber wheel 3, and a gas guide port is formed in one end, facing the material outlet, of the hollow groove 301; the fixing frame 4 is fixedly connected to the material storage box 1 and is rotationally connected with the hollow extrusion rubber wheel 3; wherein, an air storage tank 401 is arranged in the fixed frame 4, an air inlet is arranged in the air storage tank 401, a sliding plate 402 is connected in the air storage tank 401 in a sliding way, and one side of the sliding plate 402 is connected with the fixed frame 4 through an elastic rope 403; a connecting groove 404, which is communicated with the plurality of gas storage grooves 401 and the hollow groove 301, so that the gas in the gas storage grooves 401 can enter the hollow groove 301 through the connecting groove 404 and be discharged; the magnetic disc 302 is fixedly connected to the hollow extrusion rubber wheel 3 and magnetically attracted with the sliding plate 402.
An air outlet 4041 is arranged on the fixed frame 4, two ends of the air outlet 4041 are respectively communicated with the air storage tank 401 and the connecting tank 404, air outlet grooves 4042 are arranged on the fixed frame 4 and the hollow extrusion rubber wheel 3, and the air outlet grooves 4042 are used for connecting the hollow tank 301 and the connecting tank 404.
The air outlet 4041 and the air inlet are both provided with one-way valves, so that the air flowing direction is the external air and is discharged through the air inlet, the air storage tank 401, the air outlet 4041, the connecting groove 404, the air outlet groove 4042, the hollow groove 301 and the air guide port in sequence, grass seeds in the discharge groove are blown, and the grass seeds are prevented from being extruded and damaged to be adhered to the discharge plate 201.
Sliding connection has row flitch 201 on row material wheel 2, and row flitch 201's one end fixedly connected with arranges material spring 202, arranges that material spring 202 keeps away from the one end fixed connection of row flitch 201 on row material wheel 2, and threaded connection has driving-disc 204 on row material wheel 2, and fixedly connected with arranges material rope 203 on driving-disc 204, arranges the one end fixed connection that driving-disc 204 was kept away from to material rope 203 on row flitch 201.
The lower end of the material storage box 1 is fixedly connected with a material baffle plate 102, and the material discharging wheel 2 and the hollow extrusion rubber wheel 3 are both arranged in the material baffle plate 102.
The driving plate 204 is fixedly connected with a driving handle 2041, and the driving handle 2041 penetrates through the striker plate 102.
Sliding connection has slip scraper blade 5 on the storage case 1, and the lower extreme and the row of discharge wheel 2 of slip scraper blade 5, row material board 201 phase-match, the upper end fixedly connected with scraper blade spring 501 of slip scraper blade 5, and the one end fixed connection that slip scraper blade 5 was kept away from to scraper blade spring 501 is on storage case 1.
The striker plate 102 is rotatably connected with a rotating partition 503, one end of the rotating partition 503 is fixedly connected with a scraper rope 502, one end of the scraper rope 502 far away from the rotating partition 503 is fixedly connected to the sliding scraper 5, the sliding scraper 5 is fixedly connected with a U-shaped elastic sheet 504, and one end of the U-shaped elastic sheet 504 far away from the sliding scraper 5 is fixedly connected to the striker plate 102.
An adjusting plate 506 is rotatably connected to the discharge port, a connecting buckle 505 is fixedly connected to the scraper rope 502, the connecting buckle 505 is attached to the adjusting plate 506, and the adjusting plate 506 is located at the upper end of the rotating partition 503.
The device also comprises a tension spring 101, and two ends of the tension spring 101 are respectively connected to the discharging wheel 2 and the hollow extrusion rubber wheel 3.
When the device is used, the discharge plate 201 can be driven to rotate by a driving device such as a motor, the hollow extrusion rubber wheel 3 can rotate under the extrusion and friction effects of the discharge plate 201 and the hollow extrusion rubber wheel 3, and the hollow extrusion rubber wheel 3 can extrude grass seeds to prevent the grass seeds from being damaged and fix the grass seeds;
when the discharge plate 201 rotates, grass seeds can fall into the discharge groove;
under the action of the scraper spring 501, the sliding scraper 5 is always attached to the discharge wheel 2 or the discharge plate 201, the lower end of the sliding scraper 5 is a conical plate, and the grass seeds possibly remaining on the discharge plate 201 can be scraped, cleaned and prevented from blocking a discharge groove;
when the sliding scraper 5 is attached to the discharge wheel 2 and the discharge plate 201, the sliding scraper 5 slides up and down to enable the sliding scraper 5 to pull the scraper rope 502 to slide, the scraper rope 502 pulls the rotating partition 503 to rotate, and the U-shaped elastic sheet 504 which is convenient for the rotating partition 503 to rotate and reset is arranged, so that the two rotating partition 503 are far away from or close to each other, grass seeds can fall off, and the intermittent feeding of the discharge groove is convenient;
when the scraper rope 502 slides, the connecting buckle 505 is driven to pull the adjusting plate 506 to rotate, the adjusting plate 506 can be provided with a torsion spring so as to facilitate the resetting of the adjusting plate 506, and when the adjusting plate 506 rotates, grass seeds at a discharge hole of the storage box 1 can be fluctuated so as to prevent the grass seeds from being hardened and blocked and facilitate the falling of the grass seeds;
when the hollow extrusion rubber wheel 3 rotates, the magnetic disc 302 on the hollow extrusion rubber wheel 3 rotates and drives the sliding plate 402 to rotate, when the magnetic disc is close to the sliding plate 402, the sliding plate 402 is driven to rotate so as to extrude the gas in the gas storage tank 401 to enter the hollow groove 301 and be discharged, when the gas is discharged, the grass seeds in the discharge groove can be blown to prevent the grass seeds from being hardened in the discharge groove, when the magnetic disc 302 is not close to the sliding plate 402, the sliding plate 402 resets under the action of the elastic rope 403, and the external gas can enter the gas storage tank 401 through the gas inlet;
this send out through having set up row material wheel 2, hollow extrusion rubber wheel 3 can arrange the material to the grass seed, the interval of the grass seed of being convenient for, drop in order, simultaneously through the setting of hollow groove 301 and mount 4, can blow the grass seed of arranging in the material groove, prevent grass seed pressurized damage and paste on row material board 201, set up pivoted rotation baffle 503 simultaneously, can carry out intermittent type material loading and the grass seed of being convenient for ventilative, the heat dissipation to the grass seed.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. Grass seed hollow rubber wheel extrusion formula seed metering ware of Gramineae, its characterized in that includes:
the storage box (1), wherein a discharge hole is formed in the storage box (1);
the discharging wheel (2) is rotatably connected to the material storage box (1) and is positioned at the lower end of the discharge port, and a discharging groove is formed in the discharging wheel (2);
the hollow extrusion rubber wheel (3) is rotatably connected to the lower end, located at the discharge port, of the storage box (1), a hollow groove (301) is formed in the hollow extrusion rubber wheel (3), and a gas guide port is formed in one end, facing the discharge groove, of the hollow groove (301);
the fixing frame (4) is fixedly connected to the material storage box (1) and is rotationally connected with the hollow extrusion rubber wheel (3);
the air storage tank (401) is arranged in the fixed frame (4), an air inlet is arranged in the air storage tank (401), a sliding plate (402) is connected in the air storage tank (401) in a sliding mode, and one side of the sliding plate (402) is connected with the fixed frame (4) through an elastic rope (403);
the connecting grooves (404) are communicated with the plurality of gas storage grooves (401) and the hollow groove (301) so that gas in the gas storage grooves (401) enters the hollow groove (301) through the connecting grooves (404) and is discharged;
and the magnetic disc (302) is fixedly connected to the hollow extrusion rubber wheel (3) and is magnetically attracted with the sliding plate (402).
2. The grass seed hollow rubber wheel extrusion type seed sowing device according to claim 1, wherein an air outlet (4041) is arranged on the fixing frame (4), two ends of the air outlet (4041) are respectively communicated with the air storage groove (401) and the connecting groove (404), air outlet grooves (4042) are arranged on the fixing frame (4) and the hollow extrusion rubber wheel (3), and the air outlet grooves (4042) are used for connecting the hollow groove (301) and the connecting groove (404).
3. The grass seed hollow rubber wheel extrusion type seed metering device of claim 2, wherein the air outlet (4041) and the air inlet are both provided with one-way valves.
4. The grass seed hollow rubber wheel extrusion type seed metering device of claim 1, wherein a discharging plate (201) is connected to the discharging wheel (2) in a sliding mode, a discharging spring (202) is fixedly connected to one end of the discharging plate (201), one end, far away from the discharging plate (201), of the discharging spring (202) is fixedly connected to the discharging wheel (2), a driving disc (204) is connected to the discharging wheel (2) in a threaded mode, a discharging rope (203) is fixedly connected to the driving disc (204), and one end, far away from the driving disc (204), of the discharging rope (203) is fixedly connected to the discharging plate (201).
5. The grass seed hollow rubber wheel extrusion type seed metering device of claim 4, wherein a material baffle plate (102) is fixedly connected to the lower end of the storage box (1), and the material discharging wheel (2) and the hollow extrusion rubber wheel (3) are both arranged in the material baffle plate (102).
6. The hollow rubber wheel extrusion type seed metering device of grass seeds in the family of the claim 5, characterized in that a driving handle (2041) is fixedly connected to the driving disk (204), and the driving handle (2041) penetrates through the material baffle (102).
7. The grass seed hollow rubber wheel extrusion type seed metering device according to claim 5, characterized in that a sliding scraper (5) is connected on the storage box (1) in a sliding manner, the lower end of the sliding scraper (5) is matched with the discharging wheel (2) and the discharging plate (201), a scraper spring (501) is fixedly connected at the upper end of the sliding scraper (5), and one end, far away from the sliding scraper (5), of the scraper spring (501) is fixedly connected on the storage box (1).
8. The hollow rubber wheel extrusion type seed metering device of grass seeds in the family of the claim 7, characterized in that a rotary clapboard (503) is rotatably connected to the striker plate (102), a scraper rope (502) is fixedly connected to one end of the rotary clapboard (503), one end of the scraper rope (502) far away from the rotary clapboard (503) is fixedly connected to the sliding scraper (5), a U-shaped elastic sheet (504) is fixedly connected to the sliding scraper (5), and one end of the U-shaped elastic sheet (504) far away from the sliding scraper (5) is fixedly connected to the striker plate (102).
9. The hollow rubber wheel extrusion type seed metering device of grass seeds in the family of the claim 8, characterized in that an adjusting plate (506) is rotatably connected to the discharge port, a connecting buckle (505) is fixedly connected to the scraper rope (502), the connecting buckle (505) is attached to the adjusting plate (506), and the adjusting plate (506) is positioned at the upper end of the rotary clapboard (503).
10. The hollow rubber wheel extrusion seed metering device of grass seeds in the family of poaceae according to any one of claims 1 to 9, characterized by further comprising a tension spring (101), wherein two ends of the tension spring (101) are respectively connected to the discharging wheel (2) and the hollow extrusion rubber wheel (3).
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| CN202011338391.XA CN112470622B (en) | 2020-11-25 | 2020-11-25 | Grass seed hollow rubber wheel extrusion type seed sowing device |
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| CN202011338391.XA CN112470622B (en) | 2020-11-25 | 2020-11-25 | Grass seed hollow rubber wheel extrusion type seed sowing device |
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| CN112470622A true CN112470622A (en) | 2021-03-12 |
| CN112470622B CN112470622B (en) | 2022-10-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117957984A (en) * | 2024-03-28 | 2024-05-03 | 中国农业科学院草原研究所 | Improved equipment based on grassland ecological restoration and ecological restoration method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117957984A (en) * | 2024-03-28 | 2024-05-03 | 中国农业科学院草原研究所 | Improved equipment based on grassland ecological restoration and ecological restoration method |
| CN117957984B (en) * | 2024-03-28 | 2024-06-04 | 中国农业科学院草原研究所 | Improved equipment based on grassland ecological restoration and ecological restoration method |
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| CN112470622B (en) | 2022-10-11 |
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