Based on the three-year experiments of interval sowings under natural ecological conditions, in artificial chamber and in cold pool, a study was undertaken to test the performance of thermo-sensitive genic sterile rice line 139S. 为了探索光温敏核不育系139S应用基础,利用自然生态条件下3年分期播种试验和人工气候室(箱)、冷水池鉴定,对温敏核不育系139S的温敏特性进行了研究。