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杂交水稻制种,存在着工序烦琐、技术性强,产量不稳定等问题.要使父母本花期相遇,一般采用积温法和叶龄法.根据它们播种至抽穗需要的温度差异,和叶片生长与抽穗的关系,确定播差期.生育期长的父本先播先栽,生育期短的母本迟播迟栽.用这种方法,需要计算积温、标记叶龄,手续麻烦.栽母本时,父本行间杂草丛生、土壤板结、必须重新翻耕松土整地灭草,不但花时
Hybrid rice seed production, there are cumbersome processes, technical and yield instability and other issues.To make the parents meet the flowering, the general use of accumulated temperature method and leaf age method according to their sowing to the required temperature difference between heading, and leaf growth and heading The relationship between the sowing period to determine the long growing period of the first sowing the first sowing mother, a short period of growth after the late sowing the mother planted in this method, you need to calculate the accumulated temperature, leaf mark age, formalities trouble. , Between the parent line overgrown with weeds, soil compaction, soil must be re-tillage soil weeding, not only take time