对９个籼型不育系进行了越冬繁种的研究，结果表明：在趁冬存活方面以晚季禾桩越冬存活率最高，播种越冬其次，早季禾桩越冬最低。赵冬存活率除与不育系的耐寒性有关外，还与越冬前植株的结实率呈极显著负相关，原地不移栽禾桩的越冬存活率明显高于移栽的。在繁种效果方面，越冬繁种比早晚季繁种效果都好，晚季繁种又比早季好。这主要与繁种时植株敏感期所处的光温条件及不育系的光温类型有关。 The study on overwintering and multiplication of 9 indica CMS lines showed that survival rate of winter grasses was the highest in winter, followed by wintering and secondly, the lowest in winter. Besides the cold tolerance of CMS lines, the viability of ZHAO Dong was also significantly negatively correlated with the seed setting rate of pre-winter plants. The surviving rate of Zhisheng was obviously higher than that of transplanting. In the variety of effects, the overwintering species are better than the early and late varieties, and the late varieties are better than the early one. This is mainly related to the conditions of light and temperature at the plant sensitive period and the light and temperature types of the sterile lines when breeding the plants.