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通过3年的研究,在摸清了大袋蛾的生活习性的基础上,以系统工程宏观控制理论为指导,采用营林技术,生物防治,化学防治,人工摘茧和保护利用天敌等综合防治技术,防治大袋蛾12.7万公顷,有效地控制了虫害。防治后使有虫株率由80%～100%下降到10%～20%。虫口密度由34～700头/百叶下降到0.39～0.48头/百叶,挽回木材损失33万m~3,净收益5942.8万元。
After 3 years of research, on the basis of knowing the life habits of the big-bagged moths and taking the macro-control theory of systems engineering as the guide, the comprehensive prevention and control technologies such as silviculture technology, biological control, chemical control, artificial cocooning and the protection and utilization of natural enemies , Prevention and control of 127,000 hectares of moths, effectively control pests. After the prevention and treatment of insect strains decreased from 80% to 100% down to 10% to 20%. Insect population density decreased from 34 to 700 heads / leaf to 0.39 to 0.48 head / leaf, and the loss of wood was 330,000 m ~ 3, with a net profit of 59.428 million yuan.