威优647是湖南省安江农校和湖南杂交水稻研究中心共同选育的一个高产、多抗杂交水稻新组合。1990～1991年在资兴市作中、晚稻种植,平均亩产600kg左右,比本地推广组合温优3号增产10%以上。威优647的制种技术,1989年我们小面积试制取得成功,1990～1992年连续试制,亩产250kg以上。 Weiyou 647 is a new combination of high yielding and polyacrylamide hybrid rice breeding jointly by Hunan Anjiang Agricultural School and Hunan Hybrid Rice Research Center. From 1990 to 1991, in Zixing City, late rice was planted with an average yield of about 600 kg per mu, which was 10% more than that of the local promotion combination Wenyou 3. Weiyou 647 seed production technology, in 1989 we made a small area trial success, 1990 ~ 1992 trial production, more than 250kg per mu.