玉米自交系纯度的高低,直接影响到玉米杂交制种的质量和大田玉米生产的产量。为提高玉米自交系纯度,我站经过多年实践,总结出一套“五统一”(统一划隔离区、统一播种规格、统一去杂去劣、统一收穗脱粒晾晒,统一精选入库)的规范化繁殖技术,同时成立了由市、县、乡、村四级组成的领导小组,负责 The purity of maize inbred lines directly affects the quality of maize hybrids and field corn production. In order to improve the purity of maize inbred lines, I have come to a conclusion that a set of “Five Uniform” (unified zoned isolation area, unified sowing specifications, uniform unqualified, uniform threshing threshing and drying, uniform selection into Library) standardization of reproductive technology, at the same time set up by the city, county, township, village leadership team composed of four levels, is responsible for