【摘要】 淳安县山核桃产区虫害严重。食叶害虫自1991年起每年发生面积达200～300hm2，1997年达1467hm2；1995年蛀干害虫开始发生，造成枯枝，甚至主干或整株枯死，据对3074hm2山核桃林调查，其发生率达74．9％，枯死株数达4．8万株。分析虫害状况、形成原因后，提出了加强山核桃虫害基础研究、建立测报系统、采取综合治理等对策。更多还原

【Abstract】 The Carya cathayensis forests in Chunan were greatly endangered by pests. From 1991, the annual occurrence area of the pests which eat leaf amounted to 200-300hm2. The pests which eat trunck began to occur in 1995 and caused branch, even stein and whole tree dead. The analysis on 3 074 hm2 of eamp cathyensis forest showed that Its occurrence rato reached 74. 9%. At last, this paper proposed some countermeasufres, such as enforcing basic research for Carya cathyensis pests, Constracting forcasting system and adopting comprehensively cure, etc.更多还原