1 选好田块,严格搞好时空隔离为保证杂交种子的纯度,在选择制种田时,如能选好能实现空间隔离的田块更好,如不能,则应使周围的田块的水稻的花期与制父花期隔开,以实现时间隔离,或者周围种100m以上的制父本隔离。同时制种田必须排灌方便,土壤肥力也应较好,防止因土壤肥力差而造成父母本花期不遇,从而影响制种效果。 1 selected fields, strictly do a good job of time and space isolation To ensure the purity of hybrid seeds in the choice of farming, if the election can achieve better spatial isolation plots, if not, you should make the surrounding plots of rice The flowering period is separated from the flowering period, in order to achieve the time separation, or the isolation of more than 100m of male parent. At the same time the system of farming must be convenient irrigation and drainage, soil fertility should also be better to prevent poor soil fertility caused by the parents of the flowering period, thus affecting the seed production.