随着森林生态学、生物化学、植物生理学的研究进展,以及人们在营林实践中,逐步认识大面积纯林,会导致地力衰退,病虫害严重,林木生长缓慢,质量低劣.因此,现在已开始重视营造混交林,以逐步代替单一纯林.以往,不少地区对混交林作过很多研究工作,生产上也有些成功的经验,作者就混交林生产力和营造技术提出粗浅意见,以供参考.混交林的生产实践由于纯林在树种个体发育过程中需求条件相同,如有一因子不能满足生产发育的需要,就会影响整个林分的生长,致使生产力降低,而混交林是不同植物结构所形成较稳 With the progress of forest ecology, biochemistry and plant physiology, as well as people’s understanding of a large area of ​​pure forests in the practice of silviculture, it will lead to the decline of soil fertility, serious pests and diseases, slow growth of trees and poor quality. In the past, many areas of mixed forest have done a lot of research work, production has some successful experience, the author put forward superficial opinions on the mixed forest productivity and create technology for reference. Production practice of mixed forest As the pure forest in tree species individual development process needs the same conditions, if a factor can not meet the needs of production and development, it will affect the growth of the entire stand, resulting in reduced productivity, and mixed plantation is a different plant structure More stable