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通过对晋南平川杨麦间作地的林木因子、光照强度及小麦产量的调查结果进行回归分析．认为光照强度是影响间作心肝麦产量的关键因素．杨树不同的密度配置是调节麦田光照的主要因子。
Regression analysis was made on the survey results of tree planting factors, light intensity and wheat yield in the inter-Yangmai intercropping area in Jinnan Plain. It is considered that the light intensity is the key factor that affects the yield of heartwood wheat. Different density of poplar configuration is the main factor to regulate the light of wheat field.