摘要
以3种造林密度‘欧美107杨’为研究对象,通过测定不同年份胸径、树高、枝下高等,来分析造林密度及修枝对‘欧美107杨’生长量的影响。结果表明,‘欧美107杨’胸径和单株材积生长量随着造林密度的增大而减小,即3种造林密度‘欧美107杨’2 a胸径和单株材积生长量由高到低依次为株行距3 m×12 m、5 m×6 m、3 m×6 m,而树高生长量变化趋势正好相反。修枝在一定程度上能促进树高生长和提高枝下高,有利于提高杨树木材质量。
Using the plantations of Populus euramericana ＇ Neva＇ with 3 different planting densities, the influences of plant- ing density and pruning on tree growth were analyzed by investigating DBH, tree height, and under-branch height in differ- ent years. The results showed that the DBH and individual volume of P. euramericana ＇Neva＇ decreased with the increas- ing in planting density, but the growth trend was opposite in tree height. Pruning could promote the growth of tree height and increase under-branch height in a certain extent, which showed positive improvement in wood quality.
出处
《林业科技开发》
北大核心
2014年第1期115-117,共3页
China Forestry Science and Technology
基金
安徽省学术和技术带头人及后备人选学术科研活动资助经费项目(编号:201110)
