拟木蠹蛾对广西桂中地区绿化树种危害调查

Investigation on Arbela dea Swinhoe and A.bailbarana Matsumura damaging to greening trees in middle of Guangxi

2011年10月至2012年2月,采用线路踏查法和标准地调查法对广西柳州市和来宾市绿化树种拟木蠹蛾危害进行调查。共调查122种绿化树,受拟木蠹蛾危害的树种达45种,占调查树种总数的36.9%,平均危害程度达成灾标准的8种,局部成灾的31种,发生普遍,危害严重。拟木蠹蛾主要分布于树干中下部,98%蛀道向下,主要从树枝分叉和破伤处侵入。建议在生产上采用人工的、物理的或化学的方法进行防治。

The survey of damage were studied through line and sample plot investigation in Liuzhou and Laibin city of Guangxi during October 2011 to February 2012. The results showed that the damage of A. dea Swinhoe and A. bailbarona Matsumura was discovered both in Liuzhou and Laibin. 45 species of trees were damaged,accounting for 36.9% of total species in this study,and 8 species reached disaster standard and 31 speces caused partial disaster. A. dea Swinhoe and A. bailbarana Matsumura mainly distributed in light species of trees and in the middle and low of tranks, 98% of pest paths were downwards,and instrusive wounds were mainly in branch bifurcation and damaging area.Conventional methods of artificiality, physics and chemistry can be taken to control it.