甜菜夜蛾（Ｓｐｏｄｏｐｔｅｒａｅｘｉｇｕａ）是一种分布极广、食性杂和间歇性暴发危害的害虫。自８０年代中期以来，随着甜菜夜蛾对化学农药抗性的发展，其发生和危害日益严重。在我国南方各地曾多次大发生，造成多种蔬菜和其它作物的大幅度减产。近年来有报道推荐用Ｂ... Spodoptera exigua is a pest that is extremely disruptive to both dietary and intermittent outbreaks. Since the mid-1980s, with the development of resistance to beet armyworm to chemical pesticides, its occurrence and harms have become increasingly serious. In many parts of southern China, there have been many major accidents that have resulted in drastic cuts in the production of various vegetables and other crops. In recent years, there are reports recommended B ...