大豆根绒粉蚧是危害大豆的根部害虫。近几年来危害日趋严重,轻者减产30％,重者减产70％。1984年我们进行了药剂防治试验,现将试验结果整理如下: Soybean pod Melastoma is a root pest that endangers soybean. In recent years, the harms have become more and more serious, with the light output reduced by 30% and the heavy output reduced by 70%. In 1984 we conducted a pharmaceutical control test, the test results are summarized as follows: