作物精量播种中均匀株距的影响因素及应对措施

对影响均匀株距的因素进行了系统分析和研究，并以精量播种玉米为例，讨论了型孔的形状、尺寸及排种轮型孔处的线速度对其形成均匀株距的影响、提出采用气吸式与窝眼式相结合的结构形式，使气吸所需的真空度下降，优化吸种效果；利用零速投种，降低投种高度来提高播种精度；合理设计种沟形状以减少种子散射。

Study on the Influencing Factors of Crop Spacing in Rows in Precision Seeding

The factors which have influences on the uniform spacing in rows have been systematically analyzed and studied.With precision seeding of corn as example,the influences of hole-type shape,size and linear velocity of seed-wheel-shaped hole on uniform spacing in corn rows were studied.The combined structure model of air-suction and nest-to-eye was bought up in order to decrease the required degree of vacuum suction and to optimize the result of suction.The zero speed of seeding and decreasing the high of casti...