选育经过　 1 980年用日本品种喜峰作母本 ,中间架桥品系 G1 62作父本进行杂交 ,经 3年 6代的系统选育 ,于 1 983年在海南育成稳定品系南1 5 1 ,表现早熟、抗病、高产 ,但因其极难脱粒 ,严重制约其在生产上应用。遂于 1 985年冬分别用 2 .5万、3.0万、3.5万伦琴钴 60伽马射线进 Breeding After crossing the Japanese parent Xifeng as the female parent and the intermediate bridging strain G162 as the male parent in 1980, the strain was bred in Hainan in 1983 after three years and six generations of breeding. , Showing early maturity, disease resistance, high yield, but because of its extremely difficult threshing, severely restricts its application in the production. Then in the winter of 1985 with 25,000, 30,000, 35,000 Roentgen cobalt 60 gamma rays