辽宁东部山区,建国后营造了大面积针叶纯林,多以落叶松为主。实践证明,它无论在抗性、保持土壤肥力和保持生态平衡等方面,都远不及混交林。因此,人们对营造针阔混交林开始有所重视,为发展辽宁东部山区的林业提供营造混交林的技术,我所实验林场(原大伙房林场),于1966年营造了293亩长白落叶松与籽椴混交林,现已郁闭,生长良好。现将调查结果报告如下。 Liaoning eastern mountainous areas, after the founding of the PRC to create a large area of ​​pure needle-leaf forests, mostly larch-based. Practice has proved that it is far less than the mixed forest in terms of resistance, maintaining soil fertility and maintaining ecological balance. Therefore, people began to give priority to the construction of mixed coniferous and mixed forests, and provided technologies for the development of forestry in the eastern mountainous areas of Liaoning in order to create mixed forests. In our experiment, the experimental forestry farm (formerly Dahuofang Forest Farm) created 293 acres of long- Linden mixed forest, is now closed, good growth. The survey results are reported below.