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我县于1982年10月13日至25日对越冬前马尾松毛虫进行大面积飞机超低容量防治,取得显著效果,现初报如下: 一、防治区概况我县地处浙江中部。全县山林总面积92万亩,其中马尾松林面积32.5万亩,占山林总面积的28.3%,大部分马尾松林分布在海拔100—500米黄土丘陵上。林相单纯,食料
My county in October 13, 1982 to 25 25 days before the wintering Dendrolimus punctatus large-scale low-capacity aircraft control and achieved remarkable results, are as follows: First, the general situation of prevention and control zone is located in the central Zhejiang My county. The county a total area of 92 hectares of forest, of which Masson pine forest area of 325000 mu, accounting for 28.3% of the total area of the mountain forest, most of Masson pine forests are located in the loess hilly 100-500 meters above sea level. Forest phase simple, food material