通过不同孔径标准筛对玉米种子室内分级、分析,得出同等播种质量条件下种子批分级加工有利于机械播种,也为企业带来了边际利润,同时也提出了分级时的注意事项,供参考。 Through the standard sieve with different pore size, the indoor classification and analysis of maize seeds were carried out, and it was concluded that the grading processing of seed lots under the same sowing quality was conducive to mechanical sowing and also brought the marginal profit to the enterprise. At the same time, the precautions when grading were put forward for reference .