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近年来,红薯天蛾在河南省南阳地区呈严重发生趋势,1997年红薯天蛾一代幼虫在内乡县曾造成严重危害,部分田块有食光秆现象。因此,对红薯天蛾的发生应引起高度重视。 一、红薯天蛾的发生特点 1.为害的地域性及间歇性。成虫的飞翔力很强,在环境条件不适宜时,能迁飞远地繁殖为害,一般在干旱时常到低洼潮湿或雨水多的地区孽生繁殖,若雨水过多而高湿,则向高处迁飞。
In recent years, the sweet potato moth in Henan Province Nanyang showed a serious trend in 1997, a generation of sweet potato moth larvae in Neixiang County had caused serious harm, some plots of light culm phenomenon. Therefore, the occurrence of sweet potato moth should cause great attention. First, the occurrence of sweet potato moth characteristics 1. Victims of regional and intermittent. Adult flying force is strong, in the unfavorable environmental conditions, can migrate to fly breeding far, usually in the dry to low-lying wet or rainy areas often produce evil, if the rain is too much and high humidity, then the height Move to fly.