摘要
为了发展珍贵用材树种大花序造林,在闽南山地引进澳洲10个大花序桉家系进行测定试验。结果表明:1212号和1202号家系为优良家系,6年生平均保存率85.56%;平均胸径、树高、冠幅、带皮材积和去皮材积分别达15.42cm、12.73m、4.46m、0.1379m^(3)、0.1164m^(3),上述指标的遗传增益分别达8.56%、1.86%、4.83%、16.50%、18.18%;胸径、树高、冠幅、带皮材积和去皮材积5个指标变异系数0.50%~30.04%,属于变幅较小至中等幅度范围,家系内林木生长较整齐一致;平均风害指数为17.02%,比群体均值低14.98%。
In order to develop Eucalyptus cloeziana plantations,10 families of E.cloeziana were introduced from Australia to the southern Fujian mountains.The results showed that families 1212 and 1202 were the most excellent families,with average preservation rates of 85.56%at age 6 years.The average diameter at breast height(DBH),tree height,crown width,volume with bark and volume without bark were 15.42 cm,12.73 m,4.46 m,0.1379 m^(3)and 0.1164 m^(3),respectively.The genetic gains of above indicators were 8.56%,1.86%,4.83%,16.50%and 18.18%,respectively.The coefficient of variation of DBH,tree height,crown width,volume with bark and volume without bark ranged from 0.50%to 30.04%,belonging to the range of relatively small to moderate variation.The growth of trees within the family was relatively uniform,and the average wind damage index of selected families was 17.02%,lower than the population average of14.98%.
作者
吴庆全
WU Qingquan(Tianma State-owned Forest Farm,Pinghe 363704,Fujian,China)
出处
《桉树科技》
2023年第4期58-62,共5页
Eucalypt Science & Technology
基金
福建省林业科研项目(闽林科﹝2015﹞1号)。
关键词
大花序桉
家系
遗传变异
遗传增益
Eucalyptus cloeziana
family
genetic wariation
genetic gain
