瓢虫有多种,有帮助人们消灭害虫的有益瓢虫,也有对作物进行取食的有害瓢虫。二十八星瓢虫就是为害蔬菜的典型有害瓢虫。它主要为害茄果类蔬菜中的茄子和马铃薯。成虫和幼虫都能进行为害,咬食叶肉,残留上表皮呈网状,致使叶片干枯、破碎,严重时使植株死亡,有时还能为害果实和嫩茎,茄二十八星瓢虫还能取食花瓣、萼片,使果实变硬,味苦,品质降低。近几年来,茄二十八星瓢虫在宁晋县茄子上危害有逐年加重的趋 There are many kinds of ladybugs, helpful ladybugs that help people kill pests, and harmful ladybugs that feed on crops. Twenty-eight star ladybug is a typical harmful insect ladybug. It is mainly harmful to eggplant and potato in solanaceous vegetables. Adult and larvae can harm, bite on the leaf, leaving the upper epidermis was reticular, resulting in leaf dry, broken, the plant died in serious cases, sometimes harmful fruits and young stems, tomato twenty-eight ladybug can take Food petals, sepals, so that the fruit hardens, bitter, lower quality. In recent years, tomato twenty-eight ladybug in Ningjin County, eggplant on the hazards have increased year by year trend