杂交水稻制种是杂交水稻应用于生产的重要环节,涉及到杂交稻种子产量、质量和效益。建立在人工操作上的制种方式,不仅耗费大量的劳力,而且由于人工操作速度慢,容易造成父母本花期错位,延误最佳栽插期,影响父母本生长发育和花期相遇,造成产量下降;特别是对两系杂交水稻制种,容易导致母本穗分化期遭遇低温干扰而育性波动,降低种子纯 Hybrid rice seed production is an important part of hybrid rice used in the production, which involves the hybrid rice seed yield, quality and efficiency. The method of seed production based on artificial operation not only consumes a lot of labor, but also tends to lead to dislocation of parental flowering, delay of optimal planting period, impact on growth and development of parents, and decrease of output due to slow manual operation. In particular, the two-line hybrid rice seed production, easily lead to maternal ear differentiation encountered low temperature interference and fertility fluctuations, reduce seed purity