湘南双季稻区气候特点与两系杂交稻秋季制种技术  

The Climatic Conditions and the Autumn Seed Production Techniques of Two-line Hybrid Rice in the Double-cropping Rice Area of Southern Hunan

作　　者：黄培斌 谢建华 黄培劲 成福婷 

机构地区：[1]湖南省永州市气象局 [2]湖南省永州市种子公司

出　　处：《杂交水稻》1998年第5期9-11,共3页Hybrid Rice

摘　　要：分析了湘南地区的气候特点与两系杂交稻制种季别的关系，认为湘南双季稻区两系杂交稻制种以发展秋制为宜。秋制中不育系育性转换敏感期安排以８月上旬为最佳，抽穗扬花授粉期可安排在８月１６日～９月５日之间，以８月下旬为优。对两系杂交稻秋季制种主要技术进行了总结。Based on the climatic data of 47 years from 1951 to 1997 in Yongzhou, a double-cropping rice area of southern Hunan, the selection of seed production season for two-line hybrid rice was analyzed. It has been found that it is suitable to conduct seed production of two-line hybrid rice in autumn season (flowering time in middle August) in the area. In the autumn seed production, the sensitive stage of fertility alteration of TGMS lines should be in the first ten days of August and the best time for flowering and pollination should be in the third ten days of August. The advantages of and main techniques for the autumn seed production of two-line hybrid rice were discussed.

关 键 词：水稻 气象因子 两系杂交水稻 秋制技术 

分 类 号：S511.032[农业科学—作物学] S162.53