首页 | 本学科首页   官方微博 | 高级检索  
     检索      

毛白杨优良无性系(新品种)材性测定研究
引用本文:顾万春,归复,于志民,穆吕钦,孙翠玲,田奇凡.毛白杨优良无性系(新品种)材性测定研究[J].林业科学研究,1998,11(2):186-191.
作者姓名:顾万春  归复  于志民  穆吕钦  孙翠玲  田奇凡
作者单位:中国林业科学研究院林业研究所,北京市林业局,北京市水利局
基金项目:北京市1993~1998年自然科学基金,林业部“八五”重点课题,林业部“九五”重点课题
摘    要:按生长性状预选出毛白杨13年生10个无性系用于材质测定。试材取自北方大兴县测定林,每无性系在3个重复中各抽样1株,伐倒取样,分析表明,毛白杨无性系间纤维长度,宽度和长宽比差异极显著,重复率依次为0.777,0.537和0.676;木材全年密度,早材密度和晚材密度差异极显著,重复率依次为0.536,0.514和0.429。

关 键 词:无性系  木材密度  纤维长度  生长型  毛白杨
收稿时间:6/9/1997 12:00:00 AM

Study on the Measurement of Wood Properties for Excellent Clones(New Variety)of Populus tomentosa
Gu Wanchun,Gui Fu,Yu Zhimin,Mu Luqin,Sun Cuiling and Tian Qifan.Study on the Measurement of Wood Properties for Excellent Clones(New Variety)of Populus tomentosa[J].Forest Research,1998,11(2):186-191.
Authors:Gu Wanchun  Gui Fu  Yu Zhimin  Mu Luqin  Sun Cuiling and Tian Qifan
Institution:Gu Wanchun Gui Fu Yu Zhimin Mu Luqin Sun Cuiling Tian Qifan
Abstract:year poplar clonal stand in the 3 sites of Beijing,Hebei,Henan are observed for their growth character. 12 clones including 10 clones and 2 CK are tested for their wood properties. The test material comes from the test stands from Daxing,Beijing by sampling one tree from each of the 3 repeats for each clone. The analysis result shows significant variation of fiber length,fiber width and length/width ratio among the poplar clones,their repeatability is 0.777,0.537,0.676 respectively. The poplar clones,timber total density,spring wood density,fall wood density have significant variation,their repeatability is 0.536,0.517,0.429 respectively. Fiber length ( Y L ) with age assumes exponential curve growth model: Y L =7.195 5 e -0.836 9(t -1 ) . Total density ( Y D ) with age assumes fluctuated growth model: Y D=0.505 3 0.000 67t . The heritablity is independent among the properties of fiber length,fiber width. 8 excellent clones are selected for Beijing,through the economical weights analysis and index selection of industrial timber properties such as volume increment,timber total density,fiber length and stem straightness. The comprehensive breeding gain of industrial timber can be higher than 20%. According to the conclusion of wood properties resulting from Beijing,excellent clones for two sites including Hebei and Henan are chosen.
Keywords:clone  timber  density  fiber  length  growth  model  selection  index  
本文献已被 CNKI 维普 等数据库收录!
点击此处可从《林业科学研究》浏览原始摘要信息
点击此处可从《林业科学研究》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号