摘要
研究分析了文安县境内27a生毛白杨侧枝直径与主干直径的相差关系。其结果表明,毛白杨不同粗度的侧枝与主干直径的关系显著(R=-0 7642)即侧枝越粗,主干尖削度越大;各轮侧枝的个数对主干的影响极显著(R=-0 9820);在不同树高的情况下,侧枝与主干的关系表现出随树高的增长侧枝对主干的抑制作用越大的趋势。
The relationship between trunk and lateral branch of Populus tomentosa Carr.,with stand age 27, were studied in Wenan county, Hebei province. The results show that diameter of trunk and lateral branch has evident negative relation(R=-07642),i.e. the more larger diameter of the lateral branches is, the more bigger taper of the trunk is, and the numbers of the lateral branch have the most negative effect on the trunk(R=-09820). But the close relationship between lateral branch and trunk are different in term of the different height of the poplar, i.e. the more height of poplar is, the more inhibition to trunk by lateral branches are.
出处
《河北林果研究》
2003年第3期212-216,共5页
Hebei Journal of Forestry and Orchard Research
关键词
毛白杨
侧枝
主干
修枝
Populus tomentosa Carr.
lateral branch
trunk
branch pruning
