采摘收获期的鲜食玉米果穗,测量其物理性状。设定影响因素,通过包切式鲜食玉米脱粒机进行脱粒试验,验证果穗物理性状特征与脱粒效果的相关性。试验数据证明,果穗大小端直径差是影响机械脱粒效率、芯轴残留率和子粒含杂率的主要因素,子粒含水率主要影响子粒机械破伤情况。 Picked fresh corn ear harvest, measuring its physical properties. The influencing factors were set, and the threshing test was conducted by the package sliced ​​fresh corn thresher to verify the correlation between the physical characteristics of ear and threshing effect. The experimental data show that the difference of tip diameter is the main factor affecting the mechanical threshing efficiency, mandrel residual rate and particle inclusion rate. The grain moisture content mainly affects the mechanical damage of the particles.