我市1994年从湖北省农科院经作所引进A-92杂交棉获得显著增产,一般增15%左右。从1996年开始引入亲本,按父、母为1∶3的比例进行杂交制种。在1996、1997两年制种面积共计2.7公顷,仅收杂交种子85kg。为提高制种产量,加速杂交棉的推广,从1998年开始,实现制种技术五改,取得了显著的 In 1994, the city from the Academy of Agricultural Sciences in Hubei Province introduced by A-92 hybrid cotton access to significant increase in production, generally increased by about 15%. Since 1996, the introduction of parents, according to the parent and the mother of 1: 3 ratio of hybrid seed production. In 1996,1997 two-year total area of ​​2.7 hectares, only received hybrid seeds 85kg. In order to increase the seed production and speed up the popularization of hybrid cotton, starting from 1998, realize the five kinds of seed production technology and achieved remarkable