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一、发生概况蛴螬是苗圃主要地下害虫,具有分布广,为害重,防治困难等特点,往往给林区育苗生产造成严重损失。1978-1981年在牡丹江、穆棱、林口和密山等市县,对蛴螬种类及发生情况进行了调查,发现危害落叶松、樟子松苗木的蛴螬种类主要有:东北大黑鳃金龟[Holo-trichia diomphalia (Bates)]、褐条丽金龟(Blitopertha Pallipennis Reittelr)和马粪蜉金龟 (Aphodius Subterreus Linne)。其中以大黑鳃金龟数量多、为害重、发生普遍。苗床蛴螬密度多则1,450头/米~2,少则10头/米~2左右
First, the occurrence of 蛴 螬 is the main underground nursery pests, with wide distribution, serious damage, prevention and control and other characteristics, often to forest nursery production caused serious losses. 1978-1981 Mudanjiang, Muling, Linkou and Mishan and other cities and counties, the types and occurrence of the grubs were investigated and found that the larch, Pinus sylvestris seedlings are mainly: grubs -trichia diomphalia (Bates)], Blitopertha Pallipennis Reittelr, and Aphodius Subterreus Linne. Among them, a large number of black-eared turtles, heavy damage, occurs universally. The density of seedbed is as high as 1,450 head / m ~ 2, ranging from 10 to about 2 ~ 2