论文部分内容阅读
红松分杈是红松内在生理因素和外部环境条件共同作用的结果。复层红松混交林和阴坡人工红松林红松分杈率较低。单层红松林高密度，能有效地降低红松多杈株率。红松杈干是主梢受害枯死或断折后，经侧枝的激烈竞争和顶端优势的驱使下逐渐形成的。
The bifurcation of Korean pine is the result of the internal physiological factors and the external environmental conditions. Pinus koraiensis mixed forest and shady artificial Korean pine forest Pinus koraiensis bifurcation rate is low. Single-layer Korean pine forest high density, can effectively reduce the rate of Korean pine twig. Korean pine twig stem is the main victims of death or fracture, the fierce competition by the collateral and the top edge of the drive gradually formed.