摘要
依据江西32块不同立地条件样地的调查材料，研究分析了立地条件对毛竹竹材密度和纤维形态的影响，研究结果表明：竹材的纤维长度主要是受海拔和速效N的影响，随海拔升高而减小，速效N在4．0％～6．0％时纤维长度最短；其次有机质含量为3％～5％和粘土纤维长度最短，而壤土最长。纤维宽度主要受速效P、坡位和速效K的影响，且速效P和坡位对纤维宽度影响达显著差异水平。纤维长宽比在不同立地条件下比较稳定，受立地因子影响较小。坡位对竹材基本密度影响达显著差异水平，上坡和海拔500-800m时基本密度最大，全N、速效N和有机质含量增高及速效K含量降低，而基本密度增大。影响竹材气干密度的主导因子依次为速效K、速效P和腐殖质厚，气干密度和基本密度有同方向的变化趋势。
Based on samples materials of 32 different sites in Jiangxi Province, the paper analyzes the effect of sites on density and fiber conformation of Phyllostachy pubescens. The research results are as follows： The fiber length of P. Pubescens is mainly affected by elevation and available N, which decreasing with elevation increasing, and the fiber is the shortest with the available N 4 % - 6 %. The shortest is in the organic substance 3 % - 5 %, and the longest in loam. The fiber width is mainly affected by available P, slope and available K, and the effect of slope on fiber width achieves significant difference. The ratio of fiber length to width is stable in different site conditions. The basic density is significantly influenced by slope, the basic density is the largest in up-slope and in elevation 500 - 800 m, and it increases with the increasing of total N, available N, organic substance, and decreasing of available K. The dominant influence factors of culm-wood of Ph. pubescens is available K, available P and thickness of humus layer, and the air-dry density has the same change trend with basic density.
出处
《福建林业科技》
北大核心
2008年第1期55-58,139,共5页
Journal of Fujian Forestry Science and Technology
基金
江西省科技厅农业重点攻关项目(项目编号:2001101002)
关键词
毛竹
立地条件
纤维形态
物理性质
Phyllostachy pubescens
site condition
fiber conformation
physical property
