两个桉树无性系木材材性的年龄效应  

Effects of Age on Wood Properties of Two Eucalyptus Clones

作　　者：陈马兴 潘松海 李孔生 彭仕尧 

机构地区：[1]国营雷州林业局,广东湛江524348

出　　处：《桉树科技》2017年第1期22-25,共4页Eucalypt Science & Technology

基　　金：国家重点研发计划课题(2016YFD0600503)

摘　　要：以桉树主栽区雷州林业局的2个桉树无性系为研究对象,研究其木材材性的年龄效应。结果发现:尾细桉LH1和ZU6无性系,其纤维长度、宽度和长宽比均随林龄呈增加趋势,纤维长度在0.6~0.8 mm之间,长宽比在34.4~42.4之间,同龄LH1的长宽比高于ZU6;随林龄增加木材质量和制浆造纸性能提高。Wood properties of two Eucalyptus clones from plantations of Leizhou Forestry Bureau were studied to examine the effects of age on key wood traits. Samples from the two clones, LH1 and U6, both of the hybrid Eucalyptus urophylla - E. tereticornis, were analysed for basic density, fiber morphology and chemical components. The results showed that FL （fiber length）, FW （fiber width）, the ratio FL/FW, kraft pulp yield %, tensile index and pulp brightness all tended to improve with tree age. The value of FL and FL/FW were 0.6 - 0.8 mm and 34.4 - 42.4 respectively. Comparing results from the same age, clone LH1 was superior to U6 for the properties of FL, FL/FW, kraft pulp yield % and tensile index.

关 键 词：桉树 木材基本密度 纤维形态 年龄效应 

分 类 号：S781[农业科学—木材科学与技术]