“威优989”品系是中国水稻所黄发松研究员等专家从“威优46”中选育而成。我县1997年上半年引入,分别在高寒山区单季晚稻和平原平畈双季晚稻种植,均获试种成功。单季晚稻在明山乡后汤村(海拔700m)和宣武乡三坑口村(海拔400m)试种, “Weiyou 989” strain is a researcher from Institute of Rice, Chinese yellow pine and other experts selected from “Weiyou 46”. The county was introduced in the first half of 1997 and was successfully planted in single-season late rice and plain Pingji double cropping late rice in the alpine region respectively. The single-season late rice was planted in Houtou Village (700m above sea level) and Sankengkou Village (400m above sea level) in Xuanwu Township at Minghou Township,