在杂交水稻制种过程中,常常由于父母本的播插期安排不当,肥水管理不善,秧苗素质差异或气候影响,致使父母本植株的花期、花时不遇,造成结实率与制种产量低。采取错开播种期、调整插植方式、人工剥苞、割叶、喷施赤霉素等调控措施,虽能解决花期不遇的矛盾,但由于父母本植株开花习 In the process of hybrid rice seed production, often due to improper arrangements of the parents of the sowing date, poor management of fertilizer and water, seedling quality differences or climate effects, resulting in parents of the flowering plants, spend time, resulting in low seed yield and seed production. To stagger the sowing period, adjust the planting methods, artificial peel, cut leaves, spraying gibberellin and other regulatory measures, although the flowering can not solve the contradictions, but because of the parents of flowering plants