CN212414115U - A auxiliary assembly for rice seedling - Google Patents
A auxiliary assembly for rice seedling Download PDFInfo
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- CN212414115U CN212414115U CN202021004629.0U CN202021004629U CN212414115U CN 212414115 U CN212414115 U CN 212414115U CN 202021004629 U CN202021004629 U CN 202021004629U CN 212414115 U CN212414115 U CN 212414115U
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- seed
- conveying
- seedling
- seeds
- cross beam
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- 235000007164 Oryza sativa Nutrition 0.000 title claims abstract description 21
- 235000009566 rice Nutrition 0.000 title claims abstract description 21
- 240000007594 Oryza sativa Species 0.000 title 1
- 230000007246 mechanism Effects 0.000 claims abstract description 34
- 230000007480 spreading Effects 0.000 claims abstract description 24
- 238000003892 spreading Methods 0.000 claims abstract description 24
- 238000009331 sowing Methods 0.000 claims abstract description 21
- 241000209094 Oryza Species 0.000 claims abstract description 20
- 230000007306 turnover Effects 0.000 claims abstract description 18
- 238000003860 storage Methods 0.000 claims abstract description 7
- 230000005540 biological transmission Effects 0.000 claims description 51
- 239000000758 substrate Substances 0.000 claims description 9
- 239000003638 chemical reducing agent Substances 0.000 claims description 7
- 239000011159 matrix material Substances 0.000 abstract description 19
- 230000009286 beneficial effect Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 15
- 230000008901 benefit Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
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Abstract
The invention discloses an auxiliary device for raising rice seedlings, and particularly relates to the technical field of rice planting, which comprises the following steps: a conveying device for conveying the seedling tray transversely, a seed spreading device above the conveying device for spreading seeds into the seedling tray, a storage bin for containing seeds, and a feeding device above the conveying device for uniformly spreading matrix into the seedling tray; the seed spreading device comprises a cross beam capable of rotating around a vertical shaft, a rotating mechanism for driving the cross beam to rotate, a mounting frame connected with the cross beam through a lifting mechanism, a plurality of seed scoops which are arranged below the mounting frame in a rotating mode around a horizontal shaft and used for scooping seeds, and a turnover mechanism which is arranged on the mounting frame and used for driving the seed scoops to rotate; the feeding devices are arranged above the conveying devices at the two ends of the seedling inlet and outlet tray of the seed sowing device. The equipment can quickly fill the whole seedling tray with the matrix and the seeds, replaces manual operation, greatly improves the production efficiency and is beneficial to batch seedling raising operation.
Description
Technical Field
The invention relates to the technical field of rice planting, in particular to auxiliary equipment for rice seedling raising and a using method thereof.
Background
The dry seedling raising process has only soil moistening and no water layer maintaining. Common modes of plastic-disk dry seedling raising (in a greenhouse) by a fertilizer-bed fine-soil method, open-close type film dry seedling raising and the like become important seedling raising methods for cultivating strong seedlings, resisting cold, resisting drought and saving water in cold regions and double-season early rice. Plastic plate dry seedling raising by a fertilizer bed fine soil method is carried out on a fertile and loose seedling bed, and plastic soft plates or paper tubes are used for dry seedling raising. The seedling raising method has the advantages that the seeding time is not limited by water sources, and the seedling raising operation in dry seedling land is convenient; is suitable for the cultivation of big, medium and small seedlings, prolongs the seedling age compared with the wet seedling cultivation of a plastic plate, does not cross roots, and is beneficial to the collocation of high-yield varieties and the expansion of the application range.
In the existing seedling raising operation, a layer of substrate is usually placed in a seedling tray, then seeds are placed, and finally a layer of substrate is covered, however, most of the process is manually operated, which is not beneficial to large-scale seedling raising operation, so that in order to meet the requirement of large-scale and batch seedling raising operation, a corresponding device needs to be developed and designed.
Disclosure of Invention
In view of the above, the invention aims to provide an auxiliary device for raising rice seedlings, which can quickly fill the whole seedling tray with substrates and seeds, replaces manual operation, greatly improves the production rate, and is beneficial to batch rice seedling raising operation.
To achieve the above object, in a first aspect, the present invention provides an auxiliary device for rice seedling raising, comprising: a conveying device for conveying the seedling tray transversely, a seed spreading device above the conveying device for spreading seeds into the seedling tray, a storage bin for containing seeds, and a feeding device above the conveying device for uniformly spreading matrix into the seedling tray;
the seed spreading device comprises a cross beam capable of rotating around a vertical shaft, a rotating mechanism for driving the cross beam to rotate, a mounting frame connected with the cross beam through a lifting mechanism, a plurality of seed scoops which are arranged below the mounting frame in a rotating mode around a horizontal shaft and used for scooping seeds, and a turnover mechanism which is arranged on the mounting frame and used for driving the seed scoops to rotate;
the feeding devices are arranged above the conveying devices at the two ends of the seedling inlet and outlet tray of the seed sowing device.
Further, conveyer includes conveyer belt, transfer roller and conveying motor, the conveyer belt is through a plurality of the transfer roller level erect in the frame, the transfer roller be connected with the conveying motor transmission and be used for the lateral transportation to place the seedling dish on the conveyer belt.
Furthermore, the seed sowing devices are uniformly distributed at least two around the rotating axis of the cross beam, wherein one seed sowing device is used for sowing seeds in the seedling tray, and the other seed sowing device is used for taking seeds from the stock bin.
Further, rotary mechanism includes base, the bracing piece of vertical setting, installs the speed reducer on the base, bracing piece upper end fixed mounting the crossbeam, the lower extreme is installed on the base around vertical axle rotation, and is connected with the output transmission of speed reducer.
Further, elevating system includes the telescopic link of vertical setting and direction subassembly, the telescopic link is installed on the crossbeam, and the flexible end and the mounting bracket rigid coupling of its lower extreme, and install between crossbeam and the mounting bracket the direction subassembly.
Further, tilting mechanism is including installing tilting motor and the drive assembly on the mounting bracket, tilting motor's output is connected with the drive assembly transmission, the drive assembly with get kind of spoon transmission and be connected.
Furthermore, the transmission assembly comprises a transmission wheel and a transmission belt, an output shaft of the turnover motor is horizontal, and the end part of the turnover motor is provided with the transmission wheel; the seed taking spoon is arranged at the lower end of the supporting rod below the mounting frame, the driving wheels are coaxially arranged with the rotating axis of the seed taking spoon, and the two driving wheels are in transmission connection through the driving belt.
In a second aspect, the invention also provides a use method of the auxiliary equipment for rice seedling raising, which comprises the following steps:
s1, transferring and scattering the seedling tray with the matrix: the seedling trays are sequentially placed on a conveying device, and when the conveying device conveys the seedlings at a constant speed, a layer of matrix is uniformly scattered into the seedling trays through a feeding device at the head end; after a layer of matrix is uniformly spread on the whole seedling tray, the seedling tray moves to a working position of a seed spreading device, the conveying device suspends conveying, the feeding device suspends feeding, and seed spreading is waited;
s2, seed selection and sowing: firstly, rotating the seed spreading device to a position above a stock bin, enabling the mounting frame to move downwards by the lifting mechanism, and extending the seed taking spoon with the upward opening into seeds held by the stock bin to realize seed taking; secondly, the mounting frame is moved upwards to a safe position above the stock bin by the lifting mechanism and is rotated to a working position on the conveying device, the mounting frame is moved downwards by the lifting mechanism to be close to the seed taking spoon which is positioned above the substrate in the seedling tray, the seed taking spoon is driven by the turnover mechanism to turn over 180 degrees around the horizontal shaft, and then seeds are poured onto the upper layer of the substrate of the seedling tray, so that seed spreading is realized;
s3, removing seedling trays, and re-scattering the matrix: and starting the conveying device, continuously conveying the seedling tray to move, simultaneously re-scattering a layer of matrix into the seedling tray through the feeding device at the tail end, covering seeds, and then transferring the seedling tray to the bed for seedling cultivation.
Further, in step S2, when stretching into the seed that the feed bin held with the kind spoon of fetching seeds of openly face up, return after at least once around horizontal axial both sides small amplitude swing through tilting mechanism drive kind spoon, ensure that there is the seed to move to the kind spoon smoothly.
Compared with the prior art, the invention has the beneficial effects that: through once spilling the matrix, seed, the whole seedling dish can be filled with matrix, seed fast to spill the matrix operation for the secondary, and the seed input position is accurate moreover, and the root phenomenon appears linking after the later stage seedling is rooted seldom, does benefit to the machine and inserts, and this equipment replaces manual, improves productivity ratio by a wide margin, does benefit to the batch sprout cultivation operation. When the seed taking spoon with the upward opening is stretched into seeds contained in the storage bin, the turning mechanism drives the seed taking spoon to swing around the horizontal shaft to two sides in a small range at least once and then return to the right position, so that the seeds can be smoothly moved into the seed taking spoon, and the situation that the seeds cannot be scooped is basically avoided.
Drawings
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
FIG. 1 is a schematic front view of an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1A;
FIG. 3 is an enlarged view of a portion of FIG. 2 at B according to the present invention;
FIG. 4 is a schematic view of the structure of FIG. 2 in the direction of C;
FIG. 5 is an enlarged view of a portion of FIG. 4 at D according to the present invention;
FIG. 6 is a schematic top view of the seedling tray of the present invention.
In the figure: 1. a conveying device; 11. a conveyor belt; 12. a conveying roller; 13. a transfer motor; 2. a seed spreading device; 21. a cross beam; 22. a rotation mechanism; 221. a base; 222. a support bar; 223. a speed reducer; 23. a lifting mechanism; 231. a telescopic rod; 232. a guide assembly; 24. a mounting frame; 25. taking a seed spoon; 26. a turnover mechanism; 261. turning over a motor; 262. a transmission assembly; 263. a driving wheel; 264. a transmission belt; 3. a storage bin; 4. a feeding device.
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. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 6, an embodiment of the present invention provides an auxiliary apparatus for raising rice seedlings, including: the device comprises a conveying device 1 for conveying seedling trays transversely, a seed spreading device 2 arranged above the conveying device 1 and used for spreading seeds into the seedling trays, a storage bin 3 used for containing seeds, and a feeding device 4 arranged above the conveying device 1 and used for uniformly spreading matrixes into the seedling trays, wherein the feeding device 4 can adopt a vibration feeder, and the width of blanking at the outlet of the vibration feeder is the same as that of a cavity for containing the matrixes in the seedling trays;
the seed sowing device 2 comprises a cross beam 21 capable of rotating around a vertical shaft, a rotating mechanism 22 used for driving the cross beam 21 to rotate, an installation frame 24 connected with the cross beam 21 through a lifting mechanism 23, and a plurality of seed scoops 25 which are installed below the installation frame 24 in a rotating mode around a horizontal shaft and used for scooping seeds, wherein the seed scoops can be made into a bowl shape, 5-10 rice seeds can be loaded through scooping at one time, a standard seedling tray is used, the number of planting positions (grids) on the seedling tray is needed, the corresponding number of seed scoops 25 are required to be arranged at the bottom of the installation frame 24, and therefore when all the seed scoops 25 are overturned, the planting positions on the seedling tray can be completely filled with the seeds at one time, and the overturning mechanism 26 which is located on the installation frame;
the stock bin 3 is arranged at one side of the conveying device 1, so that the seed sowing device 2 can conveniently take seeds from the stock bin;
the feeding devices 4 are arranged above the conveying devices 1 at the two ends of the seedling inlet and outlet tray of the seed sowing device 2.
Preferably, conveyer 1 includes conveyer belt 11, transfer roller 12 and transfer motor 13, can select step motor, conveyer belt 11 is through a plurality of transfer roller 12 level erect in the frame, transfer roller 12 be connected with transfer motor 13 transmission and be used for the seedling dish of transverse transport placing on conveyer belt 11, can set up the locating piece that is used for restricting the seedling dish on conveyer belt 11, guarantees the transfer position of accurate seedling dish.
Preferably, at least two seed sowing devices 2 are uniformly distributed around the rotation axis of the cross beam 21, wherein when one seed sowing device 2 is used for sowing seeds in the seedling tray, the other seed sowing device 2 is used for taking seeds from the stock bin 3. The seed taking and the seed spreading are carried out simultaneously, and the efficiency is greatly improved.
Preferably, the rotating mechanism 22 includes a base 221, a vertically disposed support rod 222, and a speed reducer 223 mounted on the base 221, wherein the upper end of the support rod 222 is fixedly mounted on the cross beam 21, and the lower end thereof is rotatably mounted on the base 221 around a vertical axis and is in transmission connection with an output end of the speed reducer 223.
Preferably, the lifting mechanism 23 includes a vertically disposed telescopic rod 231 (which may be selected as an oil cylinder, an air cylinder, an electric push rod, or the like) and a guiding assembly 232, the telescopic rod 231 is mounted on the cross beam 21, the telescopic end of the lower end of the telescopic rod is fixedly connected with the mounting frame 24, and the guiding assembly 232 is mounted between the cross beam 21 and the mounting frame 24.
Preferably, the turnover mechanism 26 includes a turnover motor 261 mounted on the mounting frame 24, and a transmission assembly 262, an output end of the turnover motor 261 is in transmission connection with the transmission assembly 262, and the transmission assembly 262 is in transmission connection with the seed taking spoon 25.
Preferably, the transmission assembly 262 includes a transmission wheel 263, a transmission belt 264 (for preventing slipping displacement, a toothed transmission belt may be selected), the output shaft of the turnover motor 261 is horizontal, and the transmission wheel 263 is disposed at the end; the seed taking spoon 25 is arranged at the lower end of a support rod below the mounting frame 24, the driving wheels 263 are coaxially arranged with the rotating axis of the seed taking spoon, and the two driving wheels 263 are in transmission connection through a transmission belt 264. The transmission shafts can be arranged on the mounting frame 24 along the width direction of the seedling tray, the transmission shafts are provided with a plurality of transmission wheels 263, the number of the transmission wheels corresponds to the number of the seed-taking scoops 25 in the width direction of the seedling tray, then the same transmission shafts are arranged along the length direction array of the seedling tray, the transmission shafts are also provided with a plurality of transmission wheels 263, the number of the transmission wheels corresponds to the number of the seed-taking scoops 25 in the length direction of the seedling tray, two adjacent transmission shafts are connected through gear transmission, and the end part of one transmission shaft is in transmission connection with the output shaft of the turnover motor 261.
In a second aspect, the invention also provides a use method of the auxiliary equipment for rice seedling raising, which comprises the following steps:
s1, transferring and scattering the seedling tray with the matrix: the seedling trays are sequentially placed on a conveying device 1, and when the conveying device 1 conveys the seedlings at a constant speed, a layer of matrix is uniformly scattered in the seedling trays through a feeding device 4 at the head end; after a layer of matrix is uniformly spread on the whole seedling tray, the seedling tray moves to the working position of the seed spreading device 2, the conveying device 1 suspends conveying, and the feeding device 4 suspends feeding to wait for seed spreading;
s2, seed selection and sowing: firstly, rotating the seed spreading device 2 to a position above the stock bin 3, enabling the mounting frame 24 to move downwards by the lifting mechanism 23, and extending the seed taking spoon 25 with an upward opening into seeds contained in the stock bin 3 to realize seed taking; in the second step, the lifting mechanism 23 enables the mounting frame 24 to move upwards to a safe position above the stock bin 3 and rotate to a working position on the conveying device 1, the lifting mechanism 23 enables the mounting frame 24 to move downwards to be close to the seed taking spoon 25 to be positioned above the substrate in the seedling tray, the seed taking spoon 25 is driven to turn over 180 degrees around a horizontal shaft through the turning mechanism 26, and then seeds are poured to the upper layer of the substrate of the seedling tray to realize seed spreading;
s3, removing seedling trays, and re-scattering the matrix: the transmission device 1 is started to continue to convey the seedling tray to move, simultaneously, a layer of substrate is scattered into the seedling tray again through the feeding device 4 at the tail end to cover the seeds, and then the seedling tray is transplanted to a bed for seedling cultivation.
The seedling tray has the advantages that the whole seedling tray can be quickly filled with the matrix and the seeds through the primary matrix scattering, the secondary matrix scattering and the secondary matrix scattering, the seed putting position is accurate, the phenomenon of root connection after the seedlings take roots in the later period is less, the seedling tray is very favorable for mechanical transplanting, the device replaces manual operation, the productivity is greatly improved, and the seedling tray is favorable for batch seedling raising operation.
Preferably, in step S2, when the seed taking spoon 25 with its mouth facing upward is inserted into the seeds in the storage bin 3, the turning mechanism 26 drives the seed taking spoon 25 to swing around the horizontal shaft to two sides for at least one time and then return to the right position, so as to ensure that the seeds can be smoothly moved into the seed taking spoon 25.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
Claims (7)
1. An auxiliary equipment for raising rice seedlings, characterized by comprising: a conveying device (1) for transversely conveying seedling trays, a seed spreading device (2) arranged above the conveying device (1) and used for spreading seeds into the seedling trays, a storage bin (3) used for containing seeds, and a feeding device (4) arranged above the conveying device (1) and used for uniformly spreading substrates into the seedling trays;
the seed sowing device (2) comprises a cross beam (21) capable of rotating around a vertical axis, a rotating mechanism (22) used for driving the cross beam (21) to rotate, a mounting rack (24) connected with the cross beam (21) through a lifting mechanism (23), a plurality of seed scoops (25) used for scooping seeds and mounted below the mounting rack (24) in a rotating mode around a horizontal axis, and a turnover mechanism (26) located on the mounting rack (24) and used for driving the seed scoops (25) to rotate;
the feeding devices (4) are arranged above the conveying devices (1) which are positioned at the two ends of the seedling inlet and outlet tray of the seed sowing device (2).
2. The auxiliary equipment for raising rice seedlings as claimed in claim 1, wherein the conveying device (1) comprises a conveying belt (11), a plurality of conveying rollers (12) and a conveying motor (13), the conveying belt (11) is horizontally erected on a rack through the plurality of conveying rollers (12), and the conveying rollers (12) are in transmission connection with the conveying motor (13) and are used for transversely conveying seedling trays placed on the conveying belt (11).
3. The auxiliary equipment for raising rice seedlings as claimed in claim 1, characterized in that at least two seed sowing devices (2) are uniformly arranged around the rotation axis of the cross beam (21), wherein when one seed sowing device (2) is used for sowing seeds in the seedling feeding tray, the other seed sowing device (2) is used for taking seeds in the stock bin (3).
4. The auxiliary equipment for raising rice seedlings as claimed in claim 1, wherein the rotating mechanism (22) comprises a base (221), a vertically arranged support rod (222) and a speed reducer (223) installed on the base (221), the upper end of the support rod (222) is fixedly installed on the cross beam (21), the lower end of the support rod rotates around a vertical shaft and is installed on the base (221) and is in transmission connection with the output end of the speed reducer (223).
5. The auxiliary equipment for raising rice seedlings as claimed in claim 1, wherein the lifting mechanism (23) comprises a vertically arranged telescopic rod (231) and a guide assembly (232), the telescopic rod (231) is mounted on the cross beam (21), the telescopic end of the lower end of the telescopic rod is fixedly connected with the mounting frame (24), and the guide assembly (232) is mounted between the cross beam (21) and the mounting frame (24).
6. The auxiliary equipment for raising rice seedlings as claimed in claim 1, wherein the turnover mechanism (26) comprises a turnover motor (261) mounted on the mounting frame (24) and a transmission assembly (262), the output end of the turnover motor (261) is in transmission connection with the transmission assembly (262), and the transmission assembly (262) is in transmission connection with the seed taking spoon (25).
7. An auxiliary device for raising rice seedlings as claimed in claim 6, characterized in that the transmission assembly (262) comprises a transmission wheel (263) and a transmission belt (264), the output shaft of the turnover motor (261) is horizontal, and the transmission wheel (263) is arranged at the end part; the seed taking spoon (25) is installed at the lower end of a supporting rod below the mounting frame (24), the driving wheels (263) are coaxially arranged with the rotating axis of the seed taking spoon, and the two driving wheels (263) are in transmission connection through a transmission belt (264).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021004629.0U CN212414115U (en) | 2020-06-04 | 2020-06-04 | A auxiliary assembly for rice seedling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021004629.0U CN212414115U (en) | 2020-06-04 | 2020-06-04 | A auxiliary assembly for rice seedling |
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| Publication Number | Publication Date |
|---|---|
| CN212414115U true CN212414115U (en) | 2021-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021004629.0U Expired - Fee Related CN212414115U (en) | 2020-06-04 | 2020-06-04 | A auxiliary assembly for rice seedling |
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| CN (1) | CN212414115U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111512913A (en) * | 2020-06-04 | 2020-08-11 | 辰溪县百年好禾家庭农场有限公司 | Auxiliary equipment for rice seedling raising and use method thereof |
-
2020
- 2020-06-04 CN CN202021004629.0U patent/CN212414115U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111512913A (en) * | 2020-06-04 | 2020-08-11 | 辰溪县百年好禾家庭农场有限公司 | Auxiliary equipment for rice seedling raising and use method thereof |
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Granted publication date: 20210129 |