河北省杂交小麦协作组经六年连续攻关,成功地研究出EK、ES两种新型化学杀雄剂,并申报了国家专利。1993年10月,“冬小麦化学杀雄配制杂种技术”获全国第七届发明展览会金牌奖。制种面积由1988年的11亩发展到1993年的3500亩,同时制种单产也由72.25公斤提高到289公斤。单产最高的制种户达到320公斤。从而使本项研究走向应用阶段。化杀杂交小麦已被省政府列入我省农业高新技术重点推广项目。化杀杂交小麦制种田的栽培管理技术如下: After six years’ continuous research, the hybrid wheat cooperative group in Hebei Province successfully developed two new chemical killing agents, EK and ES, and declared the national patent. October 1993, “winter wheat chemical hybrid male and female hybrid technology” by the seventh invention exhibition gold medal. The area for seed production increased from 11 mu in 1988 to 3,500 mu in 1993, while the yield per plant was also raised from 72.25 kg to 289 kg. The highest-yielding seed-producing households reached 320 kg. So that this research to the application stage. Kill hybrid wheat has been included in the provincial government of our province agricultural high-tech key projects. Kill hybrid wheat farming cultivation and management techniques are as follows: