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松尺蠖是危害云南松、华山松的主要害虫之一。1985至1986两年松尺蠖(Abraxassp.)在海口林场危害近30年林龄的华山松(Pinus armandii Franch)人工纯林,受害面积3300余亩,植株年死亡率2～3％。为保护好华山松林,避免连年受灾,我们在1985年1月17日～1986年7月间,每隔15天到受害林地做一次调查,用对角线五点取样法调查虫口密度,对各虫态做了室外观察及防治工作。
Pinchworm is one of the major pests that endanger Pinus yunnanensis and Pinus armandii. From 1985 to 1986, Pinus armandii Franch artificial pure forest, which was damaged by Abraxassp. In Haikou Forest Farm for nearly 30 years, suffered more than 3,300 mu of land and 2 to 3% of annual plant mortality. In order to protect the Huashan pine forest and avoid the perennial disaster, we conducted a survey every 15 days on the damaged forests from January 17, 1985 to July 1986, and investigated the population density of insects using the diagonal five-point sampling method. Bugs made outdoor observation and prevention work.