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为了对两系杂交稻制种区域的选择提供气候依据,对田间11个不育系进行了两年的育性及小气候观测.结果表明,温度变化对籼型不育系的育性转换起重要作用.供试不育系的育性转换温度界限在25～27℃之间.经气候资料普查,全省具有≥27℃连续3候高几率时段的仅4个县市,具备≥26℃连续3候以上高几率时段的计有39个县市.在我省,籼型不育系的选育及其温度问题仍是今后研究的重点.
In order to provide a climatic basis for the selection of two-line hybrid rice seed production areas, two years of fertility and microclimate observations were performed on 11 male sterile lines in the field.The results showed that temperature changes were important for the fertility conversion of indica CMS lines The fertility conversion temperature of the tested CMS lines was between 25 and 27 C. According to the climate data survey, only 4 counties in the province with ≥ 27 ℃ continuous 3-to-1 high probabilities had ≥26 ℃ continuous There are 39 counties and cities in the high probability period of three or more days. In our province, the breeding of indica CMS and its temperature are still the focus of future research.