水稻不育系完全要靠异花传粉才能结实,因而父母本花期花时相迂对了提高繁殖制种产量是非常重要的。在生产中往往会碰到父母本花期相迂好而花时相迂不好的情形。为了解决这个问题,两年来,我们在本院和广东南繁基地,对“三系”的花时动态(即开量花在一天内不同时间上的分布情况)作了一系列的观察。现将这些资料整理如表。 Rice sterile lines rely entirely on cross-pollination in order to be strong, so the parental flowering time-consuming relative to improve the breeding seed production is very important. In production, they often encounter situations in which the parents spend time rather than spend time. In order to solve this problem, we have made a series of observations over the past two years about the dynamics of the “three lines” (ie, the distribution of traffic at different times of the day) in our hospital and the base in Nan Fan, Guangdong. Now these data are organized as table.