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松毛虫是我国发展林业生产中的大敌,在我省有油松毛虫、明纹侧柏松毛虫两种,主要危害树种油松,危害油松林面积达十二万余亩。主要在平顺、黎城、潞城、沁水、沁源、阳城、和顺、左权、昔阳、寿阳、定襄、忻县、灵邱、古县、安泽等县和太原市林区发生危害,直接威胁林业生产,严重影响林木正常生长及林木快速成材,不利社会主义革命和社会主义建设。
Dendrolimus is the enemy of our country’s development of forestry production, in our province there are two kinds of pine caterpillars, Platycladus orientalis caterpillars, the main endanger pine tree species, endanger pine oil forest area of 120,000 acres. Mainly in Pingshui, Li Cheng, Lucheng, Qinshui, Qinyuan, Yangcheng, Heshun, Zuoquan, Xiyang, Shouyang, Dingxiang, Xinxian, Lingqiu, Hazard, a direct threat to forestry production, seriously affecting the normal growth of trees and trees quickly become material, adverse socialistic revolution and socialist construction.