根据田间试验资料，应用灰色系统理论，分析了枣麦复合栽培系统中不同种植模式及遮荫区、非遮荫区内小麦光合速率与主要气候生态因素的灰色关联系数及关联度，明确并理顺了影响小麦光合速率的气候生态因素的主次关系。分析表明，蒸腾速率是影响光合速率的主导因素，而遮光胁地不是影响光合速率和产量的主要问题 According to the field experiment data, the gray system theory was used to analyze the different cropping patterns and the gray correlation coefficient and correlation degree of photosynthesis rate and main climatic ecological factors in the shading and non-shady regions in Zaoyi, The primary and secondary relationships of climatic and ecological factors affecting the photosynthetic rate of wheat were followed. Analysis shows that transpiration rate is the dominant factor affecting photosynthetic rate, and shading is not the main problem affecting photosynthesis rate and yield