云南木蠹象生物学特性及防治方法研究初报

A Preliminary Study on the Biological Characteristics and Control Methods of Pissodes yunnanensis

摘要: 云南木蠹象在云南丽江林区1年完成1个世代,蛀食云南松枝干,以幼虫在枝干内越冬,翌年3月上旬开始化蛹,5月中旬为羽化盛期。防治主要采用:成虫未羽化前清理枯死木,并集中烧毁。成虫期用45%高效氯氰菊酯乳油1:400倍液及20%大力士1:400倍液喷雾防治。

Abstract: Pissodes yunnanensis feeds on branchs and trunks of young Pinus yunnanensis.It has one generation a year in Lijiang and overwinters in the branchs and trunks of young Pinus yunnanensis when it is a larva.It begins to become the pupa during the first ten days of March and the adult emerges in the second ten days of May.Control methods are:1) collecting the dead trees and burning them before the pests become adults,2) spraying 1:400 4.5% cypermethrin and 1:400 20% imidacloprid pesticides during the adults periods.