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柳蝙蛾 Phassus excrescens Butler在哈尔滨市 1年发生 1代 ,危害杨、柳大苗树干中部和根。文中介绍了该虫的生物学特性 ,发生规律及防治技术 ,为生产防治提供依据
Phassus excrescens Butler Occurs in Harbin for 1 year, damaging the middle and roots of poplar and willow seedlings. This paper introduced the biological characteristics of the worm, the occurrence of the law and prevention and control technology to provide a basis for prevention and control of production