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| 气吸式绿豆密植精量排种器的优化与试验 |
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韩丹丹1,王清1,颜君坤1,何彬1,吕小荣1,代顺冬2,陈霖1*
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| (1.四川农业大学 机电学院, 四川 雅安 625014;2.四川省农业科学院 经济作物育种栽培研究所, 成都 610300) |
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| 摘要: |
| 针对绿豆作物在高密植条件下播种单粒率低的问题，采用单因素试验和三因素五水平二次正交旋转中心组合试验设计方法，以‘川渝绿1号’绿豆品种为研究对象，以工作压力、型孔直径和型孔数量为试验因素，以合格指数、重播指数、漏播指数为评价指标，对本研究所设计的气吸式绿豆密植精量排种器的结构参数和工作参数以及排种器对作业速度和绿豆品种的适应性进行研究。结果表明:1)工作压力6.234 kPa、型孔直径2.255 mm、型孔数量60个为最优参数组合，此时排种器合格指数为98.75%、重播指数0.58%、漏播指数0.67%，满足设计要求；2)以最优参数组合进行速度适应性试验，作业速度≤7 km/h时，排种器合格指数均>97%、重播指数<1.5%、漏播指数<2%；3)排种器对绿豆的品种适应性试验中，不同绿豆品种的合格指数均>97.5%、重播指数<1%、漏播指数<2%，满足密植条件下绿豆精量播种的技术要求，且具有良好的品种适应性，可以为绿豆密植精量排种器的设计提供参考。 |
| 关键词: 绿豆 气吸式 密植 排种器 优化 |
| DOI：10.11841/j.issn.1007-4333.2023.09.14 |
| 投稿时间：2022-11-30 |
| 基金项目:成都市科技局技术创新研发项目(2022YF0501141SN)；国家现代农业产业技术体系四川豆类杂粮创新团队(SCCXTD-2023-20)；四川省财政自主创新专项(2022ZZCX081)；国家级大学生创新训练计划项目(202210626051) |
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| Optimization and experiment of an air-suction mung bean precision seed-metering device |
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HAN Dandan1,WANG Qing1,YAN Junkun1,HE Bin1,LV Xiaorong1,DAI Shundong2,CHEN Lin1*
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| (1.College of Mechanical and Electrical Engineering, Sichuan Agricultural University, Ya'an 625014, China;2.Economic Crops Breeding and Cultivation Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu 610300, China) |
| Abstract: |
| In order to improve the precision performance for mung bean seeding under the condition of high density planting, a new air-suction mung bean precision seed-metering device was designed in this study. Based on the physical characteristic parameters of mung bean seeds and the agronomic requirements of precision densety planting, the key structural and working parameters affecting the single-seed precision sowing of seed-metering device were determined. By taking ‘Chuanyu Lv No. 1' mung bean variety as research object, single factor test was carried out to explore the influence of working pressure, diameter and number of holes on seeding performance with the qualified rate, multiple rate and leakage rate as evaluation indexes. The structural and working parameters were optimized and verified by central composite design of three factors and five levels of quadratic orthogonal rotation center. The results showed that: The working pressure of 6. 234 kPa, hole diameter of 2. 255 mm and hole number of 60 are the optimal combination. The qualified rate of 98. 75%, multiple rate of 0. 58% and leakage rate of 0. 67% met the design requirements. The qualified rate was more than 97%, multiple rate was less than 1. 5% and leakage rate was less than 2% when the working speed was within 7 km/h. The qualified rate of different varieties of more than 97. 5%, the multiple rate of less than 1% and leakage rate of less than 2% met the technical requirements of mung bean precision sowing under the condition of high density planting and had good variety adaptability. This study provided reference for the design of precision metering device for dense planting of mung bean. |
| Key words: mung bean air-suction type densely-planted seed-metering device optimization |
