大豆播种机双V型筑沟器设计与试验
贾洪雷1,2, 郑嘉鑫1,2, 袁洪方1,2, 郭明卓1,2, 王文君1,2, 于路路1

Design and experiment of a Double-V-shaped furrow opener of soybean seeder
JIA Hong-lei1,2, ZHENG Jia-xin1,2, YUAN Hong-fang1,2, GUO Ming-zhuo1,2, WANG Wen-jun1,2, YU Lu-lu1
开沟深度和作业速度对播种深度变异系数的影响