摘要
本文研究了４×４ｍ，５×５ｍ，６×６ｍ和７×７ｍ４种不同株行距对Ｉ－６３杨木材基本密度株内变异的影响。方差分析表明，不同造林密度、离地不同高度和不同树龄之间木材密度存在极显著差异，不同方位间无差异。胸高处木材密度与全树木材密度间存在明显的线性正相关．
ffect of four kinds of spacings that is 4 ×4m,5
×5m,6 ×6m,and 7 ×7m on timber density variation of Populus deltoides CL\Harvard/ was
conducted in this paper.The results of variance analysis indicated that the timber density was
quite varied between different planting density,different height above the soil,and different tree
ages,but no difference between various directions.A possitive linear correlation was existed
between timber density and ver-tical timber density on breast diameter.
出处
《江苏林业科技》
1994年第1期6-8,11,共4页
Journal of Jiangsu Forestry Science & Technology
