黏虫是一种具有远距离迁飞为害特性的“暴发性”害虫,极易在局部区域暴发成灾。以二代幼虫在玉米苗期为害,轻者叶片被吃成缺刻,重者整株被食,造成缺苗断垄;若玉米刚出苗时遭到黏虫为害,会造成全田无苗,为害极大。专家提醒农民朋友要高度警惕,密切观察田间害虫发生动态,在幼虫发生低龄期及时防治,减小危害。一、危害特点黏虫繁殖力强,产卵部位有选择性,在玉米、高粱等高秆作物上卵多产在枯叶尖部位。 Mythimna separata is a “fulminant” pest that has the properties of long-distance fly-away and is extremely vulnerable to outbreaks in localized areas. To second-generation larvae in maize seedling damage, light leaves were eaten into nicks, heavy whole plant was eaten, resulting in lack of seedlings off ridge; if the corn was young when the emergence of worm-eaten, will cause no seedlings across the field, damage great. Experts remind peasant friends to be highly vigilant, closely observe the dynamics of pests in the field, the larvae occurred in a timely manner to prevent and reduce the risk of harm. First, the characteristics of harmful insects strong reproductive, spawning sites selective in corn, sorghum and other high-stalk crops on the tip of the eggs in prolific.