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甜菜夜蛾(Laphygma exigua Hubner),近年来逐渐发展成为一种重要害虫的趋势,从1998年开始连续三年在陕西、山东、河南、江苏等地暴发成灾,危害普及全国20多个省、市和地区,损失极为惨重,加上防治上不得法,农民普遍认为不好治,没法治。已成为我国严重危害农作物的主要害虫之一。 1 生活习性甜菜夜蛾,俗称青布袋、青虫,属磷翅目夜蛾科世界性害虫,杂食性。国内已知寄主就有78种之多。以蛹土室内过冬,成虫昼伏夜出,趋光性强而趋化性弱,卵成
Laphygma exigua Hubner has gradually developed into an important pest trend in recent years. Since 1998, three consecutive years of outbreaks have occurred in Shaanxi, Shandong, Henan and Jiangsu, endangering the popularization of over 20 provinces in China, Cities and regions, the loss is extremely heavy, coupled with prevention and control is not law, farmers generally think that bad governance, no rule of law. It has become one of the major pests in our country which seriously endangers crops. 1 habits Beet armyworm, commonly known as green bags, caterpillars, is a Phosphatidiidae world pests, omnivorous. As many as 78 kinds of domestic known host. To indoor winter pupa soil, adult nocturnal, phototaxis strong and chemotaxis weak, egg into