论文部分内容阅读
德昌松毛虫在我省主要危害云南松 ,一年发生二代 ,以 2~ 3龄幼虫在云南松树干的树皮裂缝中越冬。成虫可迁飞到 3~ 4公里远的健康林分。
Dendrolimus damagingis mainly endangered Pinus yunnanensis in our province, taking two generations a year, and 2 ~ 3 instar larvae wintering in bark cracks of Yunnan pine trunk. Adults can migrate to 3 to 4 kilometers away from the healthy forest.