本文用正交多项式回归法,分析了秋季降水和晚稻生产关键期的降水与晚稻产量的关系,得出广东省秋季降水与晚稻气象产量普遍呈负相关,尤其是晚稻生育关键期的降水对晚稻产量的影响均达到显著程度. In this paper, by using orthogonal polynomial regression method, the relationship between precipitation in autumn and late rice production and the yield of late rice was analyzed. It was concluded that the precipitation in autumn of Guangdong Province was negatively correlated with the weather yield of late rice, especially in the critical period of late rice growth The impact of production have reached a significant level.