该机由吉林工业大学和吉林省公主岭市播种机厂研制，其排种器的阴窝孔采用阶梯形．对种子尺寸的适应性强，可在不更换内窝孔轮的条件下，对不同品种的玉米种子进行精密播种。台架实验表明：单粒率为９０％左右，空穴率＜２％；排种器采用重力清种方式，种子损伤率低，碎种率＜ This machine is developed by Jilin University of Technology and Gongzhuling City sowing machine factory in Jilin Province. Adaptable to the size of the seeds, precision seed sowing of different varieties of corn seeds can be done without changing the inner socket hole wheel. The experiment of the bench shows that the single grain rate is about 90% and the void ratio is less than 2%. The seed metering device adopts the method of gravitation clearing, the seed damage rate is low, the seed breaking rate is <