我地区晚造制种气温稳定,普遍成功高产,而早造制种往往花期相遇不好,产量还不够理想。从几年来的情况看,一般都是母本早而父本偏迟,相差六、七天,甚至半个月。因此,早造制种如何使花期相遇,是一个值得研究的问题。一般认为,先要把好播插关,安排好两亲本的播种期,打好基础;如因栽培管理造成一些差异,后期稍加调整,就能获得较好的花期相遇。 Late generation in our region has a stable temperature and generally succeeds in high yield. However, the early seed production often encounters poor flowering periods and the yield is not satisfactory. Judging from the past few years, the mothers usually have their mothers as early as their fathers as late as six or seven days, or even half a month. Therefore, it is worth to study how early generation of seed can meet flowering season. Generally believed that the good broadcast first intercalary, arranging the sowing date of the parents, lay a good foundation; as a result of cultivation and management of some differences, a slight adjustment later, you can get a better flowering encounter.