造林密度和修枝对‘欧美107杨’生长量的影响  

Influences of planting density and pruning on the growth of Populus euramericana ‘Neva'

作　　者：李孝良[1] 蔡卫兵[1] 马永春[1] 佘诚棋[1] 

机构地区：[1]安徽省林业科技推广总站,合肥230001

出　　处：《林业科技开发》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)

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.

关 键 词：'欧美107杨’ 造林密度 修枝 生长量 

分 类 号：S792.11[农业科学—林木遗传育种]