棉花是五河县重要的经济作物，单产年际起伏很大，其主要原因是气象因素的影响。本文就气象诸因素的变异与单产的关系进行了分析，找出棉花生产的限制因素，用于指导生产。一、分析方法棉花是喜温喜光作物，根据其生理特性形成产量的关键时期是开花至吐絮期。选用七、’＼、九3 Cotton is an important economic crop in Wuhe County. The annual yield fluctuates widely, mainly due to the influence of meteorological factors. In this paper, the variation of meteorological factors and the relationship between yield were analyzed to identify the limiting factors of cotton production, used to guide the production. First, the analysis method Cotton is a warmth light crops, according to their physiological characteristics of the key period of production is flowering to the boll opening period. Choose seven, ’, nine 3