赤霉素对杂交水稻繁殖制种有较明显的增产效果,并且在一定剂量范围内,随着用量的增大,制种产量相应提高,两者基本呈倒数线性增长关系。目前,制种生产上使用赤霉素的剂量越来越大,有的已达到了每亩12～14克,基本接近剂量极值,同时生产成本也相应增大。因此,生产单位迫切需要一条既能减少赤霉素用量,降低生产成本,又不影 Gibberellin has a significant yield increase effect on hybrid rice seed production, and in a certain dose range, with the increase in the amount of seed production increased accordingly, the two basically reciprocal linear growth relationship. At present, the dosage of gibberellin used in seed production is getting bigger and bigger, and some of them have reached 12-14 g per acre, which is close to the dose extreme and the production cost also increases correspondingly. Therefore, an urgent need for production units can not only reduce the amount of gibberellin, reduce production costs, but also does not affect