开展水稻杂交育种和雄性不孕系的研究利用,必须了解掌握水稻开花的生物学特性(开花习性)。国内外科学工作者对水稻开花习性的研究虽有报告,但应用统计方法进行分析的,尚未多见。1945年本文作者(赵仁镕)曾与徐崇民同志在福建永安作过早稻、晚稻开花习性的研究,本试验是1979年继前述工作之后,在北方对水稻开花习性研究的继续。 To carry out the research on rice hybrid breeding and male infertility, we must understand the biological characteristics of flowering (flowering habits) of rice. Although scientists at home and abroad have reported on the flowering habits of rice, it is yet to be seen how they have been analyzed using statistical methods. In 1945, the author (Zhao Renrong) and Comrade Xu Chongmin made the research on the flowering habits of early rice and late rice in Yong’an, Fujian Province. This experiment is the continuation of the research on the flowering habits of rice in the north after 1979.