杉松人工促进天然更新试验  

Artificial Promotion Methods of Natural Regeneration Experiments for Abiesholophylla

作　　者：王金龙 

机构地区：[1]辽宁省宽甸满族自治县林业调查规划院,辽宁丹东118200

出　　处：《防护林科技》2016年第1期15-16,56,共3页Protection Forest Science and Technology

摘　　要：杉松是辽东地区珍贵乡土树种,人工促进天然更新试验效果显著,试验结果表明:试验区杉松幼树株数增长率(46.1%)极显著高于对照(16.8%),有母树区极显著高于无母树区,原杉松纯林的幼树株数增长率(97.4%)极显著高于原混交林(51.4%)。择伐后保留木郁闭度是0.2的杉松幼树地径增长率显著高于郁闭度0.3区(34.4%)。生产上应在种子多、质量好的种子年进行择伐作业,伐后郁闭度宜为0.2。杉松人工促进天然更新的效益可观。Abies holophyllais precious species in local eastern Liaoning area.Result shows that the effect of artificial promotion methods of natural regeneration for Abies holophylla is very obvious.The growth rate of saplings shows that:the rate of increase of trees for Abies holophylla(46.1%)is significantly higher than that of the control(16.8%);the rate of increase of trees for Abies holophylla in the area which has seed tree is significantly higher than that in the area which doesn't has seed tree;the rate of increase of trees for Abies holophylla(97.4%)is significantly higher than that of original mixed forest(51.4%).The rate of increase of ground diameter of samplings for Abies holophylla with the crown being 0.2is significantly higher than that of the area with the crown being 0.3(34.4%).It should conduct selection cutting in the abundant year and the canopy density should be 0.2after cutting.Natural regeneration by artificial promotion methods can obtain considerable benefits.

关 键 词：杉松 更新 试验 增长率 

分 类 号：S754.5[农业科学—森林经理学]