黄胸木蠹蛾生物学特性及防治技术的研究

A PRELIMINARY STUDY ON THE BIOLOGY AND CONTROL OF THE YELLOW BRISKET WOOD MOTH(Cossus chinensis Rothsch)

黄胸木蠹蛾(Cossus chinensis Rothsch)属鳞翅目木蠹蛾科,在昆明地区与橙斑白条天牛混合为害十分猖獗,曾使园林树木严重损失。主要危害柳树,有时也加害于柿树、金圈子、刺槐及杨树。幼虫蛀食韧皮部,蛀成纵横交错的不规则坑道,造成树木机械损伤以至导致溃疡,严重影响树木水分和养分的输导,使树势衰弱形成枯梢秃顶,进而造成枝干腐朽,最后整株枯死。该虫在昆明及滇中地区两年一代,以幼虫在蛀道内越冬。3、4月间在蛀道内化蛹,以后羽化并交尾产卵,幼虫孵出后又继续钻,蛀连续多年危害直到寄主死亡为止。防治措施 1.砍除受害枯萎大枝,伐除被害严重的濒死木,立即杀死其中全部害虫,杜绝虫源。 2.加强抚育管理,搞好林地卫生,防止机械损伤,促进林木健康生长,增强树木抗虫力。 3.成虫羽化期,利用其趋光性,点黑光灯诱杀成虫。 4.成虫产卵及幼虫孵化期喷洒乐果、磷胺、杀螟松或敌敌畏1000～2000倍液杀卵及初孵幼虫。 5.幼虫初蛀期用毛笔蘸速灭杀丁、磷胺、杀螟松及乐果乳剂加煤油点蛀孔杀初蛀幼虫。 6.用棉球浸速灭杀丁、乐果、杀螟松、磷胺及敌敌畏等药剂的10～100倍液塞蛀孔,然后用粘泥或沙灰水泥堵孔口,薰杀深蛀幼虫。 7.用呋喃丹颗粒剂埋于被害植株根际,使用其内吸杀虫作用毒杀钻蛀幼虫。用量为每株500～1000g(该法在老龄树上效果较差)。

The yellow brisket wood moth cau■(s great damage to willows and other shade trees in Kunming area, This article deals mainly with the external morphology, life history, habits and the pr(?)minary results of the tests on the control of the pest. The authors recommerd the control measures largely including pruning off the infested branchcs and twigs, cutting away the severely damaged tree■; trapping the moths by black lights; spraying at the egg stage and hatching peaks, and using other ch■mical methods such as plugging the larva holes with the insecticide-soaked cotton balls,