谷物收获脱粒后要进行清选,故谷物清选机械对于提高工效,减少损失,提高粮食等级方面具有重要作用。 谷物的清选包括清粮和选种两个方面。清粮就是清除混入谷物中的各种杂物(泥土、砂石、金属物、短茎秆、颖壳、异种粮粒、病虫害粒、杂草种籽等),以获得干净的谷粒。选种是把谷粒清选 Cereal harvest Threshing to be cleared, so the grain cleaning machinery for improving work efficiency, reduce losses, improve food grade has an important role. Grain clearance includes both grain clearance and seed selection. Clear grain is the removal of all kinds of debris (earth, gravel, metal, short stalks, glume, heterogeneous grains, pests, weed seeds, etc.) that are mixed into grains to get clean grains. Selection is the grain clearance