杨树品比试验的天牛危害状况差异分析

本文以湖北省潜江市林科所营建的以抗天牛品系选育为主要目的的杨树对比试验林3a生的调查数据为基础,记载每木树高、胸高直径和树皮形状指数和受害状况指数等形质指标,分别空间和品系间的天牛危害程度是否存在差异进行方差分析。同时尝试运用“日本林木育种中心”开发的LSAB软件和选择指数法,分别“树高、胸径、树皮形状、被害状况”等联合形状指标对生长较好,抗性较强的无性系进行了初步选育。

Difference Analysis on Status of Damage by Long-horned Beetle during Poplar Strain-contrast Test

Based on the investigated date from the 3—year old poplar contrast pilot forest that is constructed by Forestry Scientific Research Institute of Qianjiang City in Hubei Province and chiefly aimed at selective breeding of strain resistant to the long—horned beetle. This article has recorded the height, diameter at breast height (DBH), bark shape and damaged condition index and other quality indexes for poplar tree. Then an analysis of variance is taken for whether damaged degree exist difference among different spaces and strains. Meanwhile, an attempt is made to carry out selective breeding on better growth and stronger resistance respectively according to height, DBH, bark shape and damaged strains etc. by use of LSAB software and selective index method developed by Japanese Forest Tree Breeding Center.