以往我省防治松毛虫多采用化学药剂喷粉、喷雾,不仅浪费药剂、污染了环境,还杀伤了天敌、破坏了林内生态平衡,人畜中毒现象还时有发生。近年来,广大森保工作者根据北方松毛虫具越冬下(上)树的习性,创造了毒笔划环、围塑料环(裙)、树干喷药环等有效防治方法。为进一步简化制造工艺,降低成本,我们研制成功用拟除虫菊酯毒纸环阻杀松 In the past, prevention and control of pine caterpillars in our province used chemical pesticides to spray dust and spray more. It not only wastes chemicals and pollutes the environment, but also kills natural enemies and damages the ecological balance in forests. People and livestock poisoning also occur from time to time. In recent years, the majority of forest protection workers based on the northern pine caterpillar overwintering under the (habits) of trees, creating a poison pen stroke ring, plastic ring around (skirt), trunk spray ring and other effective prevention and treatment methods. In order to further simplify the manufacturing process, reduce costs, we successfully developed pyrethroid poison paper ring block pine