安两优 4 0 2是我县选用高异交结实率、低温敏核不育系安湘Ｓ ,与湖南安江农校选育的早籼恢复系Ｒ4 0 2配组 ,从 1994年起测交筛选育成的两系杂交早籼稻中熟组合。经6年各地种植表现具有“熟期适中、优质、高产、抗性好和制种产量高”等优点。1　选育过程1994年引进安湘Ｓ、Ｒ4 Anliangyou 4 0 2 is the county selected high outcrossing seed setting rate, low temperature sensitive genic male sterile line Anxiang S, and Hunan Anjiang Agricultural School breeding early indica restorer line R4 0 2 with measured from 1994 onwards Screening bred early indica hybrid rice two lines of cooked combination. After six years of planting performance has “moderate maturity, high quality, high yield, good resistance and seed production,” and so on. 1 breeding process 1994 introduced Anxiang S, R4