桉树纤维材原料林优良无性系的选择

对13个桉树无性系的生长性状、木材纤维形态和化学组分等性能进行测定与分析,并经多性状综合评判,选择出生长量、生物量和纤维产量高且材质优良,可作为纤维材在闽南山地重点推广应用的优等无性系C1、C6、C9和C10,近4年生平均树高、胸径、杆材重量、纤维产量分别可达16.0 m、13.9 cm、47.5 kg.株-1和21.9 kg.株-1,木材基本密度、纤维长度、长宽比分别为0.569 g.cm-3、0.926 mm和56.3;选出生长量(产量)较高且材质优良的无性系有EC1、C2、C3、C4,这些无性系可根据闽南山地的具体立地条件有选择地应用。

Selection of Eucalyptus grandis Fibre Timber Raw Material Forest Fine Clone

Through the determinations and analyses of 13 Eucalyptus grandis properties of clonal growth properties,wood fibre configuration and chemical composed component,and the multiple-character colligated judge,the fine grade of clones C1,C6,C9,and C10 with high growth amount,biomass,and fibre yield and fine wood quality,which might be emphatically popularized and applied as the fibre timber,were selected,the average about-4-year-old tree hight,dbh,log weight,fibre yield respectively reached 16.0m,13.9cm,47.5kg per tree,and 21.9kg per tree,the wood basic density,fibre length,and the ration of wood length to wood width were 0.569g.cm-3,0.926mm and 56.3 respectively; the clones with high growth increment and fine wood quality were selected,which were C1,C2,C3,and C4,those clones could be applied with selection according to the concrete south Fujian mountain land site condition.