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大豆根蛇潜蝇(Dphiomgia shibatuji Spencer)是大豆重要害虫之一,主要分布在东北及内蒙春大豆产区,尤以吉林、黑龙江两省为重。幼虫蛀食大豆根皮,造成根皮腐烂,严重影响养分和水分传导。危害轻者豆株生长缓慢,花英减少,重者枯死。大豆根蛇潜蝇一年发生一代,以蛹在豆茬上越冬,翌年5月中～6月上旬羽化,羽化盛期为5月下旬,6月上～下旬为幼虫为害期,6月中～下旬陆续化蛹越冬。成虫羽化的第二日交尾、产卵,产卵期为6.4～7.5天,产卵量为19.5～21.7粒,最多42粒,卵产于豆苗胚轴皮层内。卵期为3～4天,幼虫期为14天,共分为三个龄期。40%乐果乳油用种子量0.7%拌种,有显著效果。
Soybean root snake (Dphiomgia shibatuji Spencer) is one of the major pests of soybean, mainly distributed in northeastern and Inner Mongolia spring soybeans, especially in Jilin and Heilongjiang provinces. Larvae eaten soybean root bark, causing root bark rot, a serious impact on nutrients and water conduction. Light harm to the slow growth of strains of beans, flowers reduced, severe dead. Soybean root snake miner produces a generation a year, pupae in winter over the stubble, the following year in May ~ early June emergence, emergence peak in late May, June to late larvae damage, mid-June ~ Later in succession pupation wintering. Adult emergence of the second day of mating, spawning, spawning period of 6.4 to 7.5 days, the fecundity of 19.5 to 21.7, up to 42, eggs produced in the seedling embryo cortex. Eggs for 3 to 4 days, larvae for 14 days, is divided into three age. 40% dimethoate Seeds with seed volume of 0.7% seed dressing, a significant effect.