大豆蚜虫是大豆作物主要害虫之一,由于广泛使用化学农药防治,大豆蚜虫的抗药性倍增,为害猖獗。为了寻找豆蚜防治的新途径,在自然天敌普查中,发现一个优势豆蚜天敌种群日本豆蚜茧蜂。日本豆蚜茧蜂分布很广,遍及大豆产区。79—83年连续5年放蜂试验,在豆田的寄生率可达56％以上,最高可达76％,在豆蚜发生中等年份里能有效的控制大豆卷叶率在1％以下。 Soybean aphids are one of the major pests of soybean crops. Because of the widespread use of chemical pesticides, soybean aphids have multiplied their resistance and are harmful to human health. In order to find a new way for the control of soybean aphid, in natural census, a predatory soybean aphid population was found. Japan Aphid aphid widely distributed throughout the soybean producing areas. During 79-83 years of continuous bee-booming experiment, the parasitism rate in soybean field can reach 56% and up to 76%, and the soybean leaf curl rate can be effectively controlled below 1% in the mid-year of occurrence of soybean aphid.