影响玉米机械收粒质量因素的分析

Factors Affecting Corn Mechanically Harvesting Grain Quality

研究玉米品种、子粒水分含量、产量水平、种植密度、种植行距、植株高度、穗位高度及收割速率等因素对玉米机械收粒质量(子粒破碎率、杂质率和损失率)的影响。结果表明,子粒含水量与机收时子粒破碎率、损失率和杂质率呈显著相关,子粒水分含量越高,机收子粒破碎率和杂质率越高,但田间损失率越低。不同来源品种机收质量特性表现出较大差异。

The effects of corn hybrids, grain moisture content, yield levels, plant density, row spacing, plant height, ear height, and harvest rate on quality of mechanically harvesting grain （ grain crushed rate, impurity rate and yield loss rate ） were studied. The results showed that grain moisture content was significantly correlated with grain crashed rate, yield loss rate, and impurity rate. When grain moisture content was higher, the grain crashed rate and impurity rate would be higher, but yield loss rate would be lower. The qualities of mechanically harvesting grain of hybrids from different sources showed great differences.