农业机械学报2018，Vol.49Issue(5)：76-83,8.DOI:10.6041/j.issn.1000-1298.2018.05.009
玉米秸秆残茬侧向抛出动力学模型建立与试验
Kinetics Modeling and Experiment of Lateral Throwing of Corn Straws
摘要
Abstract
The 2BMFJ type no-till precision planter which applied the way of expelling straw sideways was able to integrate seedbed preparing,precision seeding,fertilization,compacting,pesticide spraying,and straws mulching equably at one operation.The planter has become an important technical mean to guarantee the combination of intensive cultivation and conversation tillage of corn,soybean and peanut.It's necessary to design a kind of straws recovering device matching the 2BMFJ type no-till precision planter,because of the reason that crop yield and microorganism were affected by crop-residue incorporation significantly.In order to understand the law of lateral throwing of straws which was impacted by the cleaning device of the 2BMFJ type no-till precision planter,comprehensively considered with the influence of air resistance,soil interference and other uncontrollable factors on the spatial trajectory of the straws,the kinetics analysis of lateral throwing process of straws was taken,a model of straws lateral throwing kinetics with modified coefficients and a parametric equation of spatial trajectory of straw were established.A modified coefficient regression model which applied with the method of three-factor and five-level quadratic regression orthogonal center combination and a high-speed photography technology was established.The kinetics model of lateral throwing of corn straws was used to match the straws recycling device and cleaning straws device.The results of field test showed that straws recovery rate was up to 91.21％,and the uncleanness rate was 6.08％.The research result can provide reference for the design of 2BMFJ type no-till precision planter matching a kind of straws recovering device.关键词
玉米秸秆/免耕播种机/清秸装置/动力学模型/中心组合试验Key words
corn straws/no-till planter/cleaning device/kinetics model/central composite experiment分类
农业科技引用本文复制引用
陈海涛,李昂,史乃煜,徐源..玉米秸秆残茬侧向抛出动力学模型建立与试验[J].农业机械学报,2018,49(5):76-83,8.基金项目
公益性行业(农业)科研专项(201303011)和现代农业产业技术体系建设专项资金项目(GARS-04) （农业）
