CN115943779A - Six-row corn-soybean intercropping air-suction type precision no-tillage planter - Google Patents
Six-row corn-soybean intercropping air-suction type precision no-tillage planter Download PDFInfo
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- CN115943779A CN115943779A CN202111170632.9A CN202111170632A CN115943779A CN 115943779 A CN115943779 A CN 115943779A CN 202111170632 A CN202111170632 A CN 202111170632A CN 115943779 A CN115943779 A CN 115943779A
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Abstract
The invention provides a six-row corn-soybean intercropping air-suction type precision no-tillage planter which comprises a rack, a planting monomer, a fertilizing unit, a transmission unit and a control unit, wherein a land wheel is arranged between the corn planting monomer and the soybean planting monomer; the fertilizer applying unit comprises a fertilizer box, a fertilizer distributor, a fertilizer applying ground wheel, a fertilizer applying opener and the like, wherein the fertilizer box is arranged at the upper part of the frame, the fertilizer distributor is arranged under the fertilizer box and is connected to the fertilizer applying opener through a fertilizer applying pipe, and the fertilizer applying opener is positioned at the front lower part of the frame; the seeding monomer comprises a seed box, a seed sowing device, a profiling mechanism, a furrow opener, a depth limiting wheel, a press wheel assembly and the like, wherein the seed box is arranged at the upper part of the bracket, the seed sowing device is arranged under the seed box, a seed guiding pipe is arranged under the seed sowing device, and the double-disc furrow opener and the depth limiting wheel are arranged at the lower part of the bracket; the whole seeder is powered by a tractor. The invention has wide applicability to corn and bean varieties, large planting density, simple structure and high operation efficiency.
Description
Technical Field
The invention relates to a six-row corn-soybean intercropping air-suction type precision no-tillage planter, belonging to the field of agricultural machinery.
Background
Corn and soybean are crops integrating grain, feed and processing raw materials, and are two types of agricultural products with the largest supply and demand gaps in China, and the national grain and oil safety is directly endangered. At present, matched seeding machines applied to a corn-soybean strip intercropping cultivation mode are all formed by modifying corn and soybean clean-making seeders, and research and development on corn-soybean strip intercropping precision seeding machines are few. Although the prior corn and soybean net-planting seeder has advanced process, mature technology and complete matched machine types, the crop plant spacing is small, the row spacing is narrow and the seed characteristics of the two crops are different in the corn-soybean strip intercropping mode, and the modified seeder is difficult to meet the agricultural requirement of corn-soybean strip intercropping precision seeding. In order to solve the current situations of poor operation performance, high production cost and low comprehensive benefit of the mechanized seeding machine with the corn-soybean strip intercropping planting mode, the theory and practice are combined, and the advanced technology and the practical technology are combined to realize the integrated operation of fertilizing, ditching, seeding, earthing and compacting of the seeding machine.
The existing seeder with strip seeding has the defects of inaccurate distribution of fertilizing amount, sowing depth and plant spacing, can realize simultaneous fertilizing of corn and soybean, has larger difference of fertilizing amount, is different from fertilizer varieties, and can meet the requirements of small seeding plant spacing and narrow row spacing under an intercropping mode.
Disclosure of Invention
According to the defects, the invention provides a six-row corn-soybean intercropping air-suction type precise no-tillage planter which can complete operations such as fertilization, ditching, sowing, earthing, pressing and the like at one time, seeds directly fall into a seed ditch through a seed guide pipe, the bounce of the seeds in the seed ditch when falling is reduced, the seeds are ensured to be uniformly distributed in the seed ditch, a sowing depth adjusting rocker can control the height of a depth limiting wheel, the sowing depth of the corn is ensured to be 4-5mm, the sowing depth of the soybean is ensured to be 3-4mm, the survival conditions such as enough illumination, ventilation, nutrition and the like can be obtained for corn and soybean plants, the utilization rate of photosynthesis is improved, the growth of the corn and the soybean is promoted, the production reduction of the corn is favorably realized, and the yield increase of the soybean are favorably realized.
The invention adopts the following technical scheme: a six-row air-suction type precise no-tillage planter for corn-soybean intercropping comprises a suspension bracket, a rack, planting single bodies, a fertilizing unit, a transmission unit, a fan pipe and an extension block, wherein the suspension bracket is arranged at the forefront of the rack, land wheels are arranged on the rack and positioned between the planting single bodies, each planting single body comprises a bracket, a profiling mechanism, a pre-furrow opener, a seed box, a seed sowing device, a seed guide pipe, a mudguard, a depth wheel, a mud scraper, a depth limiting adjusting rocker, a double-disc furrow opener and a press wheel assembly, wherein the seed box is arranged at the upper part of the bracket, the seed sowing device is arranged at the middle part of the bracket, the depth limiting rocker is arranged at the back of the bracket, the profiling mechanism is arranged at the front part of the bracket, the pre-furrow opener and the depth limiting wheel are arranged at the lower part of the bracket, the press assembly is arranged at the back part of the bracket, the single bodies are arranged on the rack through bolts and connecting locking parts, the double-disc furrow opener and the depth limiting wheel are arranged in pairs, the double-disc furrow opener is arranged in an inverted V shape and is beneficial to preventing soil from entering and influencing seed falling, the depth limiting wheel is arranged in pairs and is beneficial to preventing the double-disc furrow opener from ditching too deeply due to overlarge ditching force and influencing seed germination, the fertilizing unit comprises a fertilizer box, a fertilizer partition plate, a fertilizer distributor, a fertilizer outlet adjusting plate, a fertilizer shaft, a fertilizer disturbance shaft, a fertilizer pipe, a fertilizer land wheel, a fertilizer furrow opener, a host, a motor, an electric cabinet and an encoder, the fertilizer box is arranged on the upper part of the frame, the fertilizer partition plate is arranged inside the fertilizer box, the lower part of the fertilizer box is provided with a fertilizer outlet and a fertilizer disturbance shaft, the fertilizer outlet is connected with the fertilizer distributor, an adjusting baffle plate is arranged between the fertilizer outlet and the fertilizer distributor, the fertilizer shaft is positioned in the center of the fertilizer distributor, the fertilizer pipe is arranged on the lower part of the fertilizer distributor, the furrow opener is connected with the fertilizer pipe, and the fertilizer distributor is positioned on the front part of the frame, install in the frame through connecting the retaining member, arrange fertile land wheel and be located frame right rear portion, the encoder is installed on the land wheel epaxially, the motor is installed in the frame, the host computer is installed inside the electric cabinet, the electric cabinet welding is on the mounting panel, the drive unit includes the land wheel, the sprocket case, the transmission shaft, the transmission case, the sprocket case is installed at the frame rear, the land wheel is installed between two seeding monomers, install in sprocket case rear, the transmission case is established at the frame both ends, the transmission shaft is established between two transmission cases, the fan is installed on mounted frame upper portion, the fan pipe is connected the row of planting ware negative pressure chamber by the fan.
The six-row corn-soybean intercropping air-suction type precision no-tillage planter is characterized in that: the double-disc furrow opener and the depth wheel in the single seeding body are installed in pairs, the double-disc furrow opener is installed in an inverted V shape, the double-disc furrow opener is arranged in the middle of the depth wheel and is close to the front and lower than the depth wheel, the seed metering port of the seed metering device is arranged in the middle of the depth wheel, the seed guiding pipe is connected with the seed metering port and is arranged in the middle of the double-disc furrow opener, the mudguard is arranged in the front of the double-disc furrow opener, the mud scraping plate is arranged at the rear part of the depth wheel, the profiling mechanism is a four-bar mechanism, the upper part of the profiling mechanism is provided with a tension spring, the lengthening block is arranged between the single soybean seeding body and the frame, and the lengthening block is installed on the frame in a staggered manner.
The six-row corn-soybean intercropping air-suction type precision no-tillage planter is characterized in that two corn seeding single bodies are connected with corn seeding single body driving wheels through shafts, four soybean seeding single bodies are connected with soybean seeding single body driving wheels through transmission shafts, a chain wheel box is arranged between the seeding single bodies and connected with a long transmission shaft, and the long transmission shaft is arranged between the transmission boxes.
The air suction type precision no-tillage planter for the six-row corn-soybean intercropping is characterized in that a press assembly comprises a rack, a press wheel, a press force adjusting rod and an extension spring, wherein the press wheel is installed in an inverted V shape and is arranged at the rear part of the rack, the press force adjusting rod is arranged on the upper part of the rack, and the extension spring is arranged on the press force adjusting rod, is connected with the press wheel in a rotating manner and is arranged at the center of the rack.
The six-row corn-soybean intercropping air-suction type precision no-tillage planter is characterized in that a suspension bracket is fixed on a beam and a bracket at the front part of a machine frame and is vertically arranged at the forefront part of the machine frame.
The six-row corn-soybean intercropping air-suction type precision no-tillage planter is characterized in that a soybean fertilizing furrow opener is arranged in the middle of two soybean sowing single bodies, the corn fertilizing furrow opener is arranged on one side of each corn sowing single body, is arranged at the front part of a machine frame and is fixed on a mounting block through a U-shaped bolt.
The six-row corn-soybean intercropping air-suction type precision no-tillage planter is characterized in that a chain wheel box in a transmission unit is arranged between a rack and a land wheel, chain wheels with different tooth numbers are arranged in the chain wheel box, the land wheel is connected with a chain wheel shaft through the transmission box, the chain wheel is arranged on the chain wheel shaft and is transmitted to another transmission shaft through chain transmission, and the transmission shaft is connected with other planting monomers to realize power transmission.
The air-suction type precision no-tillage planter for the six-row corn-soybean intercropping is characterized in that a rotary encoder in a fertilizer discharging unit is connected with a fertilizer discharging ground wheel through a coupler, a shell is arranged outside the rotary encoder and the coupler and is prevented from being contacted with water, the encoder is connected with a motor, the motor is arranged at the lower part of a transmission part, the motor is connected with a fertilizer discharging transmission shaft through chain transmission, a ground wheel support is connected with the upper part of an intermediate connecting piece, the intermediate connecting piece is hung on a rack, and the ground wheel support is provided with an extension spring which is connected with the lower part of the intermediate connecting piece.
The six-row corn-soybean intercropping air-suction type precision no-tillage planter is characterized in that a precision seeding and fertilizing seed monitor consists of a host, double wash trays, a seeding and fertilizing sensor, a host storage box, a data cable and a power cable, the host is installed on the double wash trays and is sucked on front glass in a cab, the seeding sensor is installed in a seed guide pipe of a seed sowing device, the fertilizing sensor is installed on the seed guide pipe and is connected with a tractor storage battery through a power cable, and the data cable is connected with the host and the seeding and fertilizing sensor.
Compared with the prior art, the invention has the following advantages.
1. Before the ditching of two disc furrow openers, by weeds and the straw of the earlier clearance seeder front end of furrow opener in advance, dig out kind of a ditch in advance, two disc furrow openers can dig out kind of a ditch with less power, make two disc furrow openers realize better ditching performance, avoid weeds and straw to pile up in disc furrow opener and depth wheel preceding, influence the seeding quality of seeder.
2. The seeder in operation is avoided to two disc furrow opener the place ahead fender, and the earth that the furrow opener was driven out in advance gets into two disc furrow openers, influences the seed metering ware and falls kind of homogeneity, and the depth wheel rear mud scraper avoids having viscidity because of earth is moist, glues on the depth wheel, raises the depth wheel, influences the depth of planting.
3. The corn-corn seeding row spacing of the seeder is 40mm, the corn-soybean seeding row spacing is 60 mm, the soybean-soybean seeding row spacing is 30mm, the corn plant spacing is adjustable between 8 mm and 14mm, and the soybean plant spacing is adjustable between 7 mm and 13 mm, so that the seeder can meet the agricultural requirements of small plant spacing and narrow row spacing of intercropping seeding; the soybean seeding monomer and the soybean seeding monomer are arranged in a staggered way from front to back, so that the straw of the previous crop can pass through the soybean seeding monomer, and the blockage can be avoided.
4. The total 6 gears are adjusted to the depth of broadcast, and through rotating the depth of broadcast and adjusting rocker control depth of sowing, the greater depth of sowing of digit is deepened more.
5. Altogether 5 gears are adjusted to the suppression dynamics, adjust the suppression dynamics through the suppression dynamics, and the suppression dynamics is controlled by extension spring, and the big suppression dynamics of gear is big more.
6. According to the agricultural requirements of corn-soybean intercropping seeding, the fertilizing amount of corn and soybean is strictly controlled, the fertilizing amount of soybean per mu needs to be adjusted by 20-40kg, the fertilizing amount of corn per mu needs to be adjusted by 80-100kg, the required fertilizer amount is large and the fertilizer consumption is different, so 2 large-capacity fertilizer boxes are adopted, a partition plate is arranged in the middle of each fertilizer box and used for subpackaging soybean fertilizer and corn fertilizer, the difference of the fertilizing amounts of corn and soybean is large, 3 fertilizer applicators are installed at the lower part of each fertilizer box, one fertilizer applicator is connected with the soybean fertilizing furrow opener, two fertilizer applicators are connected with the same corn fertilizing furrow opener to apply fertilizer together, the fertilizer wheels rotate along with the advancing of the seeder, wheel shafts are connected with encoders through couplings, the encoders transmit the rotating data of the fertilizer wheels to motors to drive the fertilizer discharging shafts to rotate, then the motors are controlled by a host to adjust the fertilizing amount, and the large-amount fertilizing is completed.
7. Precision seeding fertilization watch-dog receives the signal of seeding sensor and fertilization sensor, can look over the maize of having sowed, soybean grain number through precision seeding fertilization watch-dog to and remind the fertilizer apparatus whether to arrange normal fertile, if have the foreign matter in the seed metering ware to lead to the seed metering ware to block up or fertilizer in the fertilizer apparatus glues and lead to the intraductal phenomenon such as not flow fertile of fertilizer in the fertilizer apparatus appears, precision seeding fertilization watch-dog all can send the police dispatch newspaper.
8. In the fertilizing system, two modes are arranged in a host, a main picture can be used for setting fertilizers for corn and soybean, and the fertilizing system has the functions of fertilizer application area statistics, small amount zero clearing, starting and stopping and the like; two kinds of modes include debugging mode and parameter setting, can set up the motor in the debugging mode and rotate the number of turns, arrange fertile according to the rotation of motor, its purpose is proofread and correct the difference that actual row fertile land wheel rotated the volume of arranging fertile and the volume of motor row fertile, and parameter setting can set up the weight of actually demarcating fertilizer, sets up the land wheel diameter, the breadth of seeder, the number of maize, soybean fertilizer apparatus, finally make the volume of arranging fertile more near on actual volume of arranging fertile and the host computer.
Drawings
Fig. 1 is a schematic view of the structure of the sowing machine of the present invention.
Fig. 2 is a schematic axial view of the seeding machine of the present invention.
Fig. 3 is a rear view schematic of the seeding machine of the present invention.
Fig. 4 is a schematic view of a sowing unit of the sowing machine of the present invention.
Fig. 5 is a structural schematic view of the fertilizer-discharging ground wheel of the seeder of the invention.
Fig. 6 is a schematic view of the structure of the land wheel of the sowing machine of the present invention.
Fig. 7 is a schematic view of a precision seeding and fertilizing monitor of the seeder of the present invention.
Claims (8)
1. The utility model provides a six rows of maize-soybean intercropping air-suction type smart volume no-tillage seeder, includes seeding monomer 1, frame 9, fan 10, tuber pipe 11, fertilization unit 12, the control unit 17, drive unit 14, mounted frame 18, its characterized in that: the hanging frame 18 is arranged at the forefront of the frame 9, and the corn sowing single body driving wheel 701 is arranged on the frame 9 and is positioned between the sowing single bodies 4 and the sowing single bodies 5; the seeding single body 1 comprises a seed box 101, a seed sowing device 102, a profiling mechanism 103, a pre-opener 104, a mudguard 105, a double-disc opener 106, a seed guiding pipe 107, a depth limiting wheel 108, a mud scraping plate 109, a depth limiting adjusting rocker 116, a pressing assembly 110 and a support 116, wherein the seed box 101 is installed on the upper portion of the support 115, the seed sowing device 102 is installed in the middle of the support 116, the depth limiting rocker 115 is arranged at the position behind the support 116, the profiling mechanism 103 is installed at the front portion of the support 116, the pre-opener 104 is installed at the lower portion of the profiling mechanism 103, a seeding single body transmission shaft 117 is installed at the lower portion 103 of the profiling mechanism, the lower portion of the support 116 is provided with the double-disc opener 106 and the depth limiting wheel 108, the pressing wheel assembly 110 is arranged at the rear portion of the support 116, the seeding single body 1 is installed on a frame 9, the double-disc opener 106 and the depth limiting wheel 108 are arranged in pairs, the double-disc opener 106 is installed in an inverted V shape, the depth limiting wheel 108 is installed in pairs, and is mainly used for adjusting the depth of the double-disc opener 106, and can adjust the proper depth according to different seeding requirements of corn and soybean to avoid affecting germination of seeds; the fertilizing unit 12 comprises a fertilizer partition plate 1201, a fertilizer box 1202, a fertilizer distributor 1205, a fertilizer discharging pipe 1206, a fertilizer discharging opening 1207, a fertilizer discharging shaft 1208, a fertilizer discharging wheel 1211, a fertilizer furrow opener 19, a man-machine exchange display 1203, an electric cabinet 13, a motor 1204 and an encoder 1213, wherein the fertilizer box 1202 is arranged on the upper portion of the rack 9, the fertilizer partition plate 1201 is arranged inside the fertilizer box 1202, the fertilizer discharging opening 1207 is formed in the lower portion of the fertilizer box 1202, the fertilizer discharging shaft 1208 is located in the center of the fertilizer distributor 1205, the fertilizer discharging pipe 1206 is arranged on the lower portion of the fertilizer distributor 1205, the fertilizer furrow opener 19 is connected with the fertilizer discharging pipe 1206, the fertilizer furrow opener 19 is located on the front portion of the rack 9, the fertilizer discharging wheel 1211 is located on the right rear portion of the rack 9, the encoder 1213 is installed on the central line of the fertilizer discharging wheel 1211, the motor 1204 is installed on the rack 9, the man-machine exchange display 1205 is installed inside the box, and the man-machine exchange display 1203 box 13 is welded on the mounting plate 16; the transmission unit 14 comprises a land wheel 7, a chain wheel box 8, transmission shafts 1401 and transmission boxes 1402, wherein the chain wheel box 8 is installed behind the rack 9, soybean seeding monomer driving wheels 702 are installed between the corn seeding monomers 4 and 5 and are installed behind the chain wheel box 802, the corn seeding monomer driving wheels 701 are installed between the soybean seeding monomers 2 and 3 and are installed behind the chain wheel box 801, the transmission boxes 1402 are arranged at two ends of the rack 9, the transmission shafts 1401 are arranged between the two transmission boxes 1402, the fan 10 is installed at the upper part of the suspension bracket 18, and the air pipe 11 is connected with an air inlet of the seed sowing device 102 through the fan 10; the control unit 17 is composed of a man-machine exchange display 1203 and a precision seeding and fertilizing monitor 21, and is finally installed in a tractor cab.
2. The six-row corn-soybean intercropping air-suction type precision no-tillage planter according to claim 1, characterized in that: the double-disc furrow opener 106 and the depth wheel 108 in the seeding unit 1 are installed in pairs, the double-disc furrow opener 106 is installed in an inverted V shape, the double-disc furrow opener 106 is arranged in the middle of the depth wheel 108 and is close to the front and lower than the depth wheel 108, the seed discharging buckle of the seed sowing device 102 is arranged in the middle of the depth wheel 108, the seed guiding pipe 107 is connected with a seed discharging port and is arranged in the middle of the double-disc furrow opener 106, the mud guard 105 is arranged in the front of the double-disc furrow opener 106, and the mud scraper 106 is arranged at the rear of the depth wheel 108.
3. The six-row corn-soybean intercropping air-suction type precision no-tillage planter according to claim 1, characterized in that: corn seeding monomer 3 and corn seeding monomer 4 are connected corn seeding monomer drive wheel 701, and soybean seeding monomer 1 and soybean seeding monomer 2 pass through transmission shaft 1401 and connect soybean seeding monomer 5 and soybean seeding monomer 6, and soybean seeding monomer 2 is connected soybean seeding monomer drive wheel 702, and soybean sprocket case 702 establishes between soybean seeding monomer 2 and corn seeding monomer 3, and corn sprocket case 701 establishes between soybean seeding monomer 5 and corn seeding monomer 4.
4. The six-row corn-soybean intercropping air-suction type precision no-tillage planter as claimed in claim 1, characterized in that: the pressing assembly 110 is composed of a structural frame 112, a pressing wheel 111, a pressing force adjusting rod 113 and an extension spring 114, wherein the pressing wheel 111 is installed in an inverted V shape and is arranged at the rear part of the frame 9, the pressing force adjusting rod 113 is arranged at the upper part of the structural frame 112, and the extension spring 114 is arranged at the upper part of the pressing force adjusting rod 113 and is arranged at the center of the structural frame 112.
5. The six-row corn-soybean intercropping air-suction type precision no-tillage planter as claimed in claim 1, characterized in that: soybean fertilization furrow opener 1901 establishes at soybean seeding monomer 5 and soybean seeding monomer 6 intermediate position, and soybean fertilization furrow opener 1904 establishes at soybean seeding monomer 2 and soybean seeding monomer 1 intermediate position, and corn fertilization furrow opener 1902 establishes at corn seeding monomer 4 right side 10 cm, and corn fertilization furrow opener 1903 establishes at corn seeding monomer 3 left side 10 cm, installs in frame 9 front portion, fixes on installation piece 20 with U type bolt.
6. The six-row corn-soybean intercropping air-suction type precision no-tillage planter according to claim 1, characterized in that: sprocket case 8 among the drive unit 14 establishes between frame 9 and land wheel 7, and inside is equipped with the sprocket of different tooth numbers, and soybean seeding monomer drive wheel 702 passes through drive box 1402 and connects the sprocket shaft, is equipped with the sprocket in the sprocket case 7, and the sprocket passes through the chain and transmits power to transmission shaft 1401 on, and transmission shaft 1401 connects soybean seeding monomer 5 and soybean seeding monomer 6, realizes power transmission.
7. The six-row corn-soybean intercropping air-suction type precision no-tillage planter according to claim 1, characterized in that: in the fertilizing unit 12, a rotary encoder 1213 is connected with a fertilizer discharging wheel 1211 through a coupler 1212, a casing 1215 is arranged outside the rotary encoder 1213 and the coupler 1212 to avoid contact with water, the rotary encoder 1213 is connected with a motor 1204, the motor 1204 is arranged at the lower part of a transmission case 1402, the motor 1204 is connected with a fertilizer discharging transmission shaft 1208 through chain transmission, a fertilizer discharging wheel bracket 1214 is connected with the upper part of an intermediate connecting piece 1209, the intermediate connecting piece 1209 is hung on a machine frame 9, and a stretching spring 1210 is arranged on the fertilizer discharging wheel bracket 1214 to be connected with the lower part of the intermediate connecting piece 1209.
8. The six-row corn-soybean intercropping air-suction type precision no-tillage planter according to claim 1, characterized in that: the precision seeding and fertilizing monitor 21 is composed of a host 2103, a seeding sensor 2102, a fertilizing sensor 2101, a data cable 2104 and a power cable 2105, wherein the host 2103 is installed in a tractor and installed on front glass in a cab, the seeding sensor 2102 is installed in a seed guiding pipe 107 of a seed sowing device, the fertilizing sensor 2101 is installed on a fertilizing pipe 1207 and is connected with a storage battery of the tractor through the power cable 2105, and the data cable 2104 is connected with the host 2103, the fertilizing sensor 2101 and the seeding sensor 2102.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111170632.9A CN115943779A (en) | 2021-10-08 | 2021-10-08 | Six-row corn-soybean intercropping air-suction type precision no-tillage planter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111170632.9A CN115943779A (en) | 2021-10-08 | 2021-10-08 | Six-row corn-soybean intercropping air-suction type precision no-tillage planter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116195393A (en) * | 2023-04-17 | 2023-06-02 | 永好智能科技(江苏)有限公司 | Six-row parallel sowing seeder for close planting of soybeans |
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2021
- 2021-10-08 CN CN202111170632.9A patent/CN115943779A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116195393A (en) * | 2023-04-17 | 2023-06-02 | 永好智能科技(江苏)有限公司 | Six-row parallel sowing seeder for close planting of soybeans |
| CN116195393B (en) * | 2023-04-17 | 2023-10-20 | 永好智能科技(江苏)有限公司 | Six-row parallel sowing seeder for close planting of soybeans |
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