一、发生及为害情况 甜菜象(虫甲)又称象(虫甲)虫在本区早有发生,但过去农民一直认为它并不为害作物,因而把它叫做“放羊牛牛”,“好牛牛”等。自从1952年种植甜菜以来,遭到象(虫甲)严重为害,以后随着甜菜的发展扩大而大量蔓延。1955年土默特旗七区共种了6,700亩甜菜,在幼苗期即被象(虫甲)吃掉1,800苗;尤其是1958年春季因象(虫甲) First, the occurrence and damage Sugar beet (Coptis), also known as (pest) insects in the area has long occurred, but in the past farmers always think it does not harm the crop, so it is called “goat”, “good beef ”Wait. Since the beet was planted in 1952, it has been severely damaged by insect pests and has subsequently spread as the beet grows. In 1955, a total of 6,700 acres of beets were planted in the seven districts of Tumiet Banner, where 1,800 seedlings were eaten by insects (insects); especially in the spring of 1958,