摘要
A no-tillage planter of narrow row spacing was designed according to the agronomic requirements of wide/narrow row farming mode in the black soil region of Northeast China.Due to the narrow spacing of the seeder unit,a gear-tooth stalk cutting mechanism was designed in order to prevent residues from blocking the planter.The basic parameters,number and edge curve of the stalk cutting blade were designed and optimized.Three-factor and three-level combined orthogonal experiments were conducted using the factors of working speed(1.12 m/s,1.57 m/s and 2.02 m/s),tillage depth(75 mm,90 mm and 105 mm)and cutter spacing(15 mm,30 mm and 45 mm),which significantly affected stalk cutting rate and soil disturbance rate.The optimal combination is the working speed of 1.62 m/s,tillage depth of 92 mm and cutter spacing of 35 mm.Under this condition,the stalk cutting rate is more than 90%and soil disturbance rate is 7.5%-12.0%.The performance of the new no-tillage planter was tested by using the above parameters.The results showed that the no-tillage planter of narrow row spacing came up to the relevant national standards in China.
基金
the National Science and Technology Support Project of China(No.2016YFD070030201)
Jilin Province Science and Technology Development Plan Project(No.20160441004SC)。
作者简介
Jia Honglei,PhD,Professor,research interests:bionic intelligent agricultural machinery and conservation tillagetechnology,Email:jiahl@vip.163.com;Jiang Xinming,PhDcandidate,research interest:conservation agricultural machinery,Email:jiangxinming@outlook.com;Zhuang Jian,PhD,SeniorEngineer,research interests:materials science and engineering,Email:zhuangjian@jlu.edu.cn;Corresponding author:Yuan Hongfang,PhD,Postdoctor,research interests:agricultural mechanization engineering.Collegeof Biological and Agricultural Engineering,Jilin University,Changchun 130022,China.Tel:+86-15104428212,Email:yuanhongfang@jlu.edu.cn;Zhao Jiale,PhD,Lecturer,research interest:agricultural mechanization engineering,Email:zhaojiale0313@163.com;Guo Mingzhuo,PhD candidate,researchinterest:agricultural mechanization engineering,Email:gmzgmzgmz@126.com.
