摘要
松褐天牛在瓯海区茶山镇羽化始期于5月上旬,盛期5月中旬至6月上旬,末期7月上旬。室内比野外羽化时间滞后,尤其是盛末期更为明显,推迟12~15d。松褐天牛在瓯海茶山镇分布普遍,且危害严重,有虫株率6.3%,致死率达4.6%,平均虫口密度1.93%。松褐天牛幼虫在松树上的垂直分布自上而下呈递减趋势,且70%以上分布在中上部树冠层。
The elosion period, distribution characteristics and endangering status of Monocha mus alternatus were studied in Chashan town of Ouhai. The results showed that Monocha mus alternatus elosed from May to July, widely distributed, and badly endangered pines.
出处
《浙江林业科技》
北大核心
1998年第6期33-36,共4页
Journal of Zhejiang Forestry Science and Technology
关键词
松褐天牛
羽化历期
危害程度
分布规律
松树
Monochamus alternatus
elosion period
endangering condition
distribution law