甲维盐注干施用对松墨天牛种群的影响  

Influence of trunk-injection of emamectin benzoate on Monochamus alternatus

作　　者：张爱良[1] 贾进伟 张旭 张绍勇 陈安良 

机构地区：[1]浙江省安吉县林业局,浙江安吉313300 [2]生物农药高效制备技术浙江省工程实验室,浙江临安311300

出　　处：《中国森林病虫》2014年第1期8-10,共3页Forest Pest and Disease

基　　金：林业公益性行业科研专项(201204501)

摘　　要：为探索甲维盐注干施用对松墨天牛种群林间变化的影响,室内测定甲维盐对松墨天牛4龄幼虫的触杀作用,调查施药后松墨天牛林间生长发育和种群变化。结果表明,甲维盐对4龄幼虫有一定的触杀作用,处理24,48 h的LC50分别为349.71 mg/L,216.12 mg/L;甲维盐注干施用不影响松墨天牛的产卵行为,但可显著降低卵的孵化率,孵化幼虫18.72%发育出现异常;连续3 a监测发现,注药林区松墨天牛种群数量明显下降,与对照林区存在极显著性差异。In order to explore the change of Monochamus alternatus population after trunk-injection of emamectin benzoate in the forest, the contact toxicity of emamectin benzoate against the 4th instar lar-vae was determined, and the growth and population change of M. alternatus were investigated in the forest. The contact toxicity was certain,and 24 h-LCso and 48 h-LCso were 349.71,216. 12 mg/L re- spectively. Trunk-injection of emamectin benzoate did not influence the oviposition behavior, but re-duced the hatching rate significantly and 18.72% of the larvae grew abnormally. The the result of the monitor from 2010 to 2012 showed the number of M. alternatus in the treated forest decreased signifi- cantly, and difference between the treated and control forest was extremely significant.

关 键 词：甲维盐 注干剂 松墨天牛 

分 类 号：S763.38[农业科学—森林保护学]