三倍体毛白杨(B304)生长特征及化学成分变异的研究  

The growing features and chemical composition variation of triploid populus tomentosa (B304)

作　　者：徐艾清[1] 樊永明[1] 张志毅[2] 谢益民[3] 

机构地区：[1]北京林业大学材料科学与技术学院,北京100083 [2]北京林业大学毛白杨研究所,北京100083 [3]山东轻工业学院,山东济南250100

出　　处：《中华纸业》2005年第11期63-65,共3页China Pulp & Paper Industry

基　　金：华南理工大学制浆造纸工程国家重点实验室资助;北京林业大学毛白杨研究所资助。

摘　　要：对三倍体毛白杨(B304)的生长特征进行了测定,并研究了三大组分随轮龄增加的变异情况,初步确定了最佳采伐周期。结果表明,该品系三倍体毛白杨在轮龄5～6年时轮宽最大,7～8年轮龄时材积增长量最大。苯醇抽提物的含量随着轮龄的增加而逐渐降低;木素含量在第6年时出现最低点;综纤维素和α-纤维素含量随轮龄增长逐渐增加,轮龄6～8年时达到最大值,以后趋于稳定。考虑原料性能与林地经济效益,8年时应为最佳砍伐期。The growing features of triploid Populus tomentosa （B304） were measured, the chemical composition variation with the increase of the annual ring was studied and the optimal felling cycle was roughly determined. The results show that, the width of the growth ring reaches its maximum point in its 5 - 6 years old and the largest volume increment is in its 7 - 8 years old. The alcohol benzene extractive content decreases with the growth of the tree and the lignin content reaches its minimum point at the 6th year; the holocellulose and α -cellulose contents increases with the growth of the tree and reaches its maximum value at the 6th - 8th year followed by a stable period thereafter. Taking both the property of the wood and the economic efficiency, the best harvesting age should be at the 8th year,

关 键 词：三倍体毛白杨 化学成分 变异 

分 类 号：S792.117[农业科学—林木遗传育种]