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[目的]探究温州进行两系杂交稻制种的气候适应性。[方法]根据2000 ～2004 年温州 6 ～9 月温度曲线,分析该地两系杂交稻制种期间温度的适应性; 根据2002 ～2009 年6 ～9 月台风发生情况,分析该地两系杂交稻制种期间光照和降水量的适应性。[结果]整个7 月和8 月上旬未出现日均温≤24.5 ℃的天气,整个8 月中旬也仅在2002 年出现过2 d 日均温≤24.5 ℃的异常天气,但也均 >23.0 ℃; 但8 月下旬偶遇扬花期白天最高气温≥35.0 ℃的天气,遇台风后连续3 d 以上的雨日也有可能发生。[结论]在温州的气候条件下,可以安全进行两系杂交稻制种,但需注意8 月下旬偶遇扬花期白天最高气温≥35.0 ℃的天气和遇台风后连续3 d 以上的雨日。考虑到温州两系杂交稻制种期间的气候特征,在制种过程中需注意制种基地的选择和制种父母本播种期的选择。
[Objective] The research aimed to investigate the climate adaptability of two-line hybrid rice seed production in Wenzhou. [Method] According to the temperature curve from June to September in Wenzhou from 2000 to 2004, the adaptability to temperature during the seed production of two-line hybrid rice was analyzed. According to the occurrence of typhoon from June to September in 2002 ~ 2009, Adaptability of Light and Precipitation during Rice Seed Production. [Result] The weather without daily temperature≤24.5 ℃ did not appear in July and early August, and there were only 2 days of abnormal temperature with average daily temperature≤24.5 ℃ in mid-August, but both were also> 23.0 ℃ ; However, in late August, the weather with the highest daytime flowering daytime temperature of 35.0 ℃ or more may occur in the rainy days of more than 3 consecutive days after the typhoon. [Conclusion] The two-line hybrid rice seed production can be safely carried out in the climate conditions of Wenzhou. However, it is necessary to pay attention to the weather with the maximum daytime temperature of ≥35.0 ℃ during the flowering period in late August and the rainy days of more than 3 days after the typhoon. Considering the climatic characteristics during the hybrid rice production in two-line system in Wenzhou, we should pay attention to the selection of seed production base and the selection of the sowing date of seed-breeding parents in the process of seed production.