蜗牛是软体动物,以吃植物的表皮和嫩叶为生,尤喜食棉苗、蔬菜、三麦的嫩叶,是农业上的主要害虫之一。长期以来对付它的唯一办法就是喷撒农药进行毒杀,但效果总不理想。一是蜗牛有硬壳保护,农药不易喷撒进去,二是常喷撒农药会污染农业环境。最理想的办法是采用生物防治法,以虫治虫。可蜗牛的天敌一直无人知道,直到1991 Snails are mollusks, to eat plant epidermis and leaves a living, especially eating cotton seedlings, vegetables, three wheat leaves, is one of the major pests on agriculture. The only way to deal with it for a long time is to spray pesticides and kill them, but the effect is not always satisfactory. First, snails have hard shell protection, insecticide is not easy to spray into the second is often sprayed pesticides will pollute the agricultural environment. The best way is to use biological control methods to insect pest control. Snail’s predators have been unknown until 1991