杀虫剂使用失当是甜菜夜蛾大发生的重要原因  

Inseeticide abuse is an important cause of beet armyworm outbreak

作　　者：林珠凤[1] 罗礼智[2] 潘贤丽[1] 

机构地区：[1]华南热带农业大学植物保护学院,海南571737 [2]中国农业科学院植物保护研究所国家病虫害生物学重点实验室,北京100094

出　　处：《昆虫知识》2007年第3期327-332,共6页Entomological Knowledge

基　　金：国家科技平台重点项目(2003DIA6N004);国家科技攻关专题(2002BA516A08-03);国家十五攻关课题(2004DA509B0601)

摘　　要：近年来,甜菜夜蛾Spodoptera exigua(H櫣bner)在我国的危害面积越来越广,造成的损失越来越大。为了更好地了解甜菜夜蛾的发生和成灾规律,改善和提高预测与防治技术,文章就杀虫剂对甜菜夜蛾及其天敌的影响进行了分析。结果表明,杀虫剂使用失当是甜菜夜蛾大发生的重要原因。甜菜夜蛾对杀虫剂的抗药性水平超过天敌,而天敌的飞行、搜索、攻击和产卵等行为,以及生长、发育、生殖和寿命等又容易受杀虫剂的干扰,产生负面影响,从而降低天敌对甜菜夜蛾的控制能力。因此,如何合理使用杀虫剂,在有效控制甜菜夜蛾种群的同时,达到保护天敌的目的,将是我们面临的新课题。The improper application of insecticide is one of the most important causes for the resurgence of beet armyworm, Spodoptera exigua （HUbner）. The insecticides have double effects. On the one hand, it reduces the population density of pest temporarily, and increases the insecticide resistance. On the other hand, its side-effects on natural enemies are negative which could destroy the balance of pest-natural enemies system, and provides the opportunity for the beet armyworm to escape natural controls. Insecticides could influence behavior of natural enemies including mating, foraging and so on. Some insecticides also disturb emergence, longevity, fecundity, and prolong the developmental period, in natural enemies. It＇ s very important to consider cautiously that how to use insecticides in the right way. In order to protect natural enemies, insecticides should be used safely without affecting natural enemies. Only if insecticides were used properly in field, that can bring the IPM program into effect.

关 键 词：甜菜夜蛾 杀虫剂 天敌 抗药性 大发生 

分 类 号：S433[农业科学—农业昆虫与害虫防治]