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在品种确定后，小麦产量将在一定程度上取决于环境条件。辩识小麦生产的光、热、土、水等生态条件及进一步明确影响产量的限制因素对制定相应的栽培技术有重要指导意义。本文应用ＦＡＯ推荐的方法估算了河北省小麦主产区昌黎、丰润、黄骅、固安、定州、藁城、阜城和临漳等八个代表性县市的小麦光热、光热水、光热土和光热水土产量潜力值，并依据自然降水和土壤养分资料估算了小麦生育期间逐月水分的产量限制系数及土壤中速效氮磷钾的产量限制系数。依此提出不同地区进一步挖掘小麦增产潜力的主攻方向。
After the breed is determined, the wheat yield will depend to some extent on the environmental conditions. Identifying the ecological conditions such as light, heat, soil and water of wheat production and further defining the limiting factors affecting the yield have important guiding significance for formulating the corresponding cultivation techniques. In this paper, the methods recommended by FAO were used to estimate the light and heat of wheat, light and hot water in eight representative counties and cities such as Changli, Fengrun, Huanghua, Gu’an, Dingzhou, Yuncheng, Phototrophic soil and photothermal potential yield of soil and water, and based on the data of natural precipitation and soil nutrients, the monthly yield limiting factors of wheat and the yield-limiting factors of available N, P and K in soil were estimated. In accordance with this proposed different areas to further tap the potential of wheat yield the main direction.