贵州高原平均海拔1000m以上稻作区多阴雨、寡日照,水稻生产易受到低温、“秋风”的危害,尤其是高海拔山区常年遭受大面积秋风冷害。为此,黔南州农科所从1989年开始了水稻抗寒育种,经过10年努力,从若干自育组合中筛选出具有强抗寒性的籼粳交三系早熟大穗型组合金优404,2001年秋 The average altitude of more than 1000 meters above sea level in Guizhou Plateau is more rainy and oligotrophic. The rice production is vulnerable to low temperature and “autumn wind”, especially in the high altitude mountainous area. To this end, Qiannan Prefecture Agricultural Institute from 1989 began cold-resistant rice breeding, after 10 years of hard work, from a number of combinations of self-selected screened hard cold resistance of indica and japonica cross three series of early mature big spike gold 404, Fall 2001