| The performance test and optimization design of the air absorption film mulching precision rapeseed seeder |
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| DOI：10.7606/j.issn.1000-7601.2019.01.38 |
| Key Words: rapeseed air-suction film mulching precision seeding seeding performance |
| Author Name | Affiliation | | ZHANG Qin | Gansu Animal Husbandry Engineering Technical College, Wuwei, Gansu 733006, China | | WANG Bao-ai | Gansu Animal Husbandry Engineering Technical College, Wuwei, Gansu 733006, China | | SUN Bu-gong | College of Mechanical and Electrical Engineering, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | FENG Yan | Beiqi Foton Motor Co., Ltd., Weifang， Shandong 261000, China |
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| Abstract: |
| Due to high failure rate of rapeseed seeding, high labor intensity, water shortage during growth period, and needed reseeding in the cold and high elevation region, we tried to explore how to improve the rapeseed planting successful level. We designed a pneumatic precision seeder that could accomplish film seeding, fertilization, re-mulching, and drip irrigation in one-time. Based on the working principle of the main structure, seeder, and the structure design of the key parts, the disc rotational speed, suction pressure, chamber diameter of exhaust hole plate were evaluated as experiment factors. Then, a set of optimal parameters were selected by doing software optimization analysis. The results showed that a combination of parameters, 197 r·min-1 of the seeding ratational speed, 2.5 kPa of negative pressure suction chamber, and 1.2 mm of diameter of a row of seed holes resulted in significant improvement in a successful seeding rate of 93%, 3% of reseeding rate, and only 1% of missing seeding rate. The field experiment showed that this combination of parameters reduced labor requirement to achieve high rapeseed seeder performance. This research provided theoretical and technical foundations for the research and design of precision seeder for rapeseed. |
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