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自1987～1995年，进行了银中杨与胡枝子、沙棘、红皮云杉混交造林试验。通过对各混交林分生长量、生物王、光能利用率、土壤理化性质、小气候效应、病虫害发生情况等项指标的调查分析，探讨了混交林的经济效益和生态效益。结果表明，混交林能够提高土地和光能的利用申，改良土壤培肥地力，改善小气候条件，抑制病虫害的发生，可获得较高的经济和生态效益。
From 1987 to 1995, the experiment of mixed afforestation of Populus euphratica, Lespedeza bicolor, Hippophae rhamnoides and Picea koraiensis was conducted. The economic benefits and ecological benefits of mixed forest were discussed through investigation and analysis of growth index, biological king, light energy utilization rate, soil physical and chemical properties, microclimate effects and occurrence of pests and diseases. The results showed that the mixed forest can improve the utilization of land and light energy, improve soil fertility, improve microclimate conditions and restrain the occurrence of pests and diseases, and obtain higher economic and ecological benefits.