塞罕坝是个大型人工林林场,是我省落叶松人工林生产基地。目前大面积人工用材林均已郁闭,林场的任务由造林为主转入了全面经营为主。近年来,林业科技人员对林场各种经营措施做了很多调查研究,提出了不少新的见解。笔者试图通过对落叶松人工林营养面积的研究,探讨林分保留密度的问题,以便为其合理经营提供理论依据,更好地指导生产。 林木营养面积是人工林尤其是人工用材林经营中的一个关键问题,直接关系到木材生产的数量和质量。在用材林经营中,若能根据林 Saihanba is a large plantation forest farms, is our province larch plantation production base. At present, a large area of ​​artificial timber forests have been closed, the task of forest farms from the main shift into full operation. In recent years, forestry scientists have done a lot of investigations and studies on various management measures in forest farms and put forward many new opinions. The author tries to study the nutrient area of ​​Larix gmelinii plantation so as to discuss the problem of reserve density in order to provide theoretical basis for its rational management and better guide the production. Forest nutrient area is a key issue in the management of planted forests, especially artificial timber, and is directly related to the quantity and quality of timber production. In the timber business, if according to the forest