By using the mechanism method, the potential productivities of light, temperature, precipitation and soil were calculated by regression analysis in each county of Henan province.

采用机制法通过对光、温、水、土逐级衰减计算了河南省各县市小麦的光、温、水、土自然生产潜力。

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The photosynthesis potential productivity and light- temperature potential productivity of west bashang are higher than those of east bashang.

坝西地区光合、光温生产潜力高于坝东地区，但光温水生产潜力却大大低于坝东地区。

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