杂交水稻首先在我国南方培育成功,并且迅速地应用于生产。北方粳型三系已于一九七五年相继配套,并开始在生产上进行试种。实践证明杂交稻的生长优势强,增产潜力大,适应性强。因此,这项粳稻生产上的重大改革,对北方水稻生产正在发生着深远地影响。杂交水稻的制种是杂交优势利用的重要环节,制种产量的高低及质量的好坏,直接影响杂交水稻的推广速度和增产效果。制种产量的高低,主要在于恢复系与 Hybrid rice was first cultivated successfully in southern China and rapidly applied to production. The northern japonica type three series have been supporting one after another in 1975, and began to test on production. Practice has proved that hybrid rice has strong growth potential, large yield potential, and strong adaptability. Therefore, this major reform in the production of japonica rice is having far-reaching implications for the northern rice production. Seed production of hybrid rice is an important part of hybrid utilization, the level of seed production and the quality of the quality of rice directly affect the promotion of hybrid rice and increase production. The level of seed production, mainly lies in the recovery system and