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蛴螬（金龟的幼虫总称），常因地区不同被称为：地蚕、土蚕、鸡粪虫等。最近两年在塞罕坝分场苗圃地时有发生，且有逐年加重的趋势。为此，对该虫进行了综合防治。１ 危害程度 蛴螬为塞罕坝分场苗圃落叶松幼苗主要的地下害虫。除咬食主侧根外，还能将根皮剥食尽，造成缺苗断垄
蛴 螬 (beetles larvae collectively), often referred to as different areas: to silkworm, silkworm, chicken fecal insects. In the last two years, there have been frequent occurrences in the Saihanba sub-site nursery and the trend has been increasing year by year. To this end, the worm comprehensive prevention and treatment. 1 Degree of harm 蛴 螬 Saihanba sub-field nursery larch seedlings main underground pests. In addition to bite the main side of the root, but also the root skin peeling, resulting in lack of seedlings broken ridge