大豆根潜蝇近年来在我地发生较重，其幼虫危害大豆植株根皮层，造成根皮腐烂，并使叶片变黄干枯，植株矮小，结荚分枝减少，批荚增多，严重的植株枯死，1991年该虫发生危害较重，全乡种植大豆4300亩，危害面积约占10％～20％，发生轻的地块受害株率为8％～12％，严重地块受害株 Soybean leafminers have been heavier in my field in recent years. Their larvae endanger the root cortex of soybean plants, causing the decay of root bark, causing the leaves to turn yellow and dry, the plants are short, the number of pod branches is reduced, the number of pods is increased, and the serious plants are dead In 1991, the pest was harmed hardest. The township planted 4,300 mu of soybean, accounting for 10% -20% of the damage area. The damage rate of the light land mass affected area was 8% -12%