双肩尺蛾是辽宁东部山区落叶松人工林的主要害虫之一。一九七三年在本溪草河城林场、清原城郊林场大面积发生。一九七四年我校实验林场五百多亩落叶松林遭受严重为害.为了进一步落实毛主席“绿化祖国”、“实行大地园林化”的伟大号召,贯彻“保护森林,并有计划地发展林业”的指示,我校森保专业工农兵学员通过学习和生 Dorsal moth is one of the major pests of Larix gmelinii plantations in eastern Liaoning. In 1973, there were large-scale occurrences in Grassland Forest Park and Qingyuan Suburban Forest Farm in Benxi. In 1974, more than 500 mu of Larch Forests in our experimental forest farm suffered serious damage.In order to further implement Chairman Mao’s “Green Land and Motherland” and “Carry out the Grand Garden,” the great call to implement the “protection of forests and the planned development of forestry ”Instructions, my school forest health professional workers and peasants and students through learning and students