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一、概况日本松干蚧 Matsucoccus matsumuraeKuwana 是我国检疫对象之一,在我市主要危害马尾松和黑松。松树被害后生长不良,树势衰弱,针叶枯黄,芽梢枯萎。生长旺盛的幼龄松树受害严重时,易发生软化垂枝和树干弯曲,甚至枯死,余杭县就有成批松林被毁。此虫在杭州地区一年发生二代,虫体微小,危害方式隐蔽,活动能力不大,仅能做近距离迁移。风和雨是自然传播因素之一,但传播速度慢。最主要的是人为携带传播,
First, an overview of Japanese pine Kuwana Matsucoccus matsumuraeKuwana is one of the quarantine objects in our city, the main hazards Masson pine and black pine. Poor growth of pine trees after being killed, tree weakness, yellow needles, buds wilt. Growing young pine trees suffer serious damage, prone to soften the weeping twigs and trunk bending, or even dead, Yuhang County, pine forests have been destroyed in batches. This insects occurred in Hangzhou area for one year, tiny insects, hidden dangers, activity is not big, can only do close migration. Wind and rain are one of the natural transmission factors, but they spread slowly. The most important thing is to carry man-made propaganda,