杂交水稻大田除杂技术湖北省潜江市种子管理站（４３３１００）向德政大田杂交水稻杂交一代种子常见的杂株有异品种、变异株、不育系、保持系、恢复系、大青棵、小青棵等几大类型，是由于制种过程中的生物学混杂和机械混杂所致。根据我省多年大面积调查表明，混杂株以异品... Hybrid rice field impurity removal technology Qianjiang City, Hubei Province Seed Management Station (433100) to the German government Daejeon hybrid rice common hybrid generation of hybrids have different varieties, mutant strains, sterile lines, maintainer lines, restorers, Daqingke, Xiaoqing and other several major types of trees, is due to the biological hybrid during the seed production and mechanical mixed. According to a large area survey in our province for many years, hybrid strains to foreign products ...