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为了探讨杨树林、刺槐林的增产机理,本文从土壤理化性质、土壤养分含量等方面,对杨树林、刺槐林与林外进行调查分析。结果表明:杨树林和刺槐林较大幅度地改善了土壤孔隙度、含水量、养分含量等等;杨树林和刺槐林在提高土壤肥力方面有着重要意义。
In order to discuss the mechanism of increasing yield of poplar forest and black locust forest, this paper investigates and analyzes the poplar forest, the locust forest and the forest from the aspect of soil physical and chemical properties and soil nutrient content. The results showed that Poplar forest and Robinia pseudoacacia forest significantly improved soil porosity, water content, nutrient content and so on. Poplar forest and Robinia pseudoacacia forest were of great significance in improving soil fertility.