父母本花期相遇良好与否,是杂交水稻制种成败的关键,但这也是目前生产上普遍未能很好解决的一个问题。三年来,我们所了解到的24个制种实例,母本早穗3天以上的为16例,其中6例早穗7—13天。可见,当前花期不遇的主要倾向是母本早穗。究其原因,一是对花期相遇的标准认识不一,二是未能牢牢地把握调节花期的主动权。 Whether the flowering parents meet well or not is the key to the success or failure of hybrid rice seed production, but this is also a problem that the current production generally fails to solve well. In the past three years, we have learned 24 examples of seed production. There were 16 males with more than 3 days old, of which 6 were 7-13 days old. It can be seen that the main propensity of the current flowering period is that of the female parent. The reason, one is the understanding of the standard flowering meet, and second, failed to firmly grasp the initiative to regulate flowering.