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在玉米收获季节,通过6组不同收获机械收获玉米子粒的对比试验与测试,研究不同机械作业对玉米子粒直收质量的影响。结果表明,机械收获子粒后,子粒破碎率普遍较高,大多超过5%的国家标准;杂质率和落粒损失率普遍较低,分别低于3%和5%的国家标准。子粒破碎率和落粒损失率在不同收获机械及其作业之间存在明显差异,杂质率差异相对较小,收获机械作业是造成玉米子粒破碎率的一个重要因素。
In the corn harvesting season, six different harvesting machines were used to harvest maize grains for comparative experiments and tests to study the effects of different mechanical operations on the quality of maize grains. The results showed that after the grain was harvested, the rate of broken grains was generally high, mostly exceeding 5% of the national standard. The impurity rate and the rate of falling loss were generally lower than the national standards of 3% and 5% respectively. There is a significant difference between the rate of grain breakage and the rate of drop of grain falling between different harvesting machines and their operations, with relatively small difference in impurity rate. Harvesting machinery operations are an important factor in the rate of corn grain breakage.