马尾松毛虫(Dendrolimuspunctatuswalker)是我区森林最大的食叶害虫,每年发生3～4代,发生面积广,造成的损害大。以“八五”为例,“八五”期间我区马尾松毛虫发生面积为66.66万hm2,占同期森林病虫害发生面积72万hm2的92.59%。随着全区造林绿化达标,纯松林面积大量增加,预计“九 Dendrolimus punctususwalker is the largest leaf-eating pest in the forest of our region, occurring 3 to 4 generations per year, causing a large area and causing great damage. Taking the “Eighth Five-Year Plan” as an example, during the Eighth Five-Year Plan period, the area of ​​dendrolimus punctatus in our district was 666,600 hm2, accounting for 92.59% of the area with 720,000 hm2 of forest pests and diseases occurring in the same period. As the entire afforestation reaches the standard, the area of ​​pure pine forest will increase greatly. It is estimated that "nine