永康市马尾松毛虫发生趋势及原因分析

Trends and Causes of Occurrence of Dendrolimus punctatus in Yongkang City

通过对永康市历年来松毛虫发生危害及防治情况的调查和分析,发现永康市的松毛虫发生周期延长,为害面积缩小,爆发期延时缩短,分析了其形成原因。

Investigations and analysis on occurrence and control of Dendrolimus punctatus in Yongkang City, Zhejiang province demonstrated that the occurrence period prolonged, damaged area decreased, outbreak period shortened there. Analysis was made on the causes.