昆虫危害树木的经济影响甚大,因而防治害虫的研究工作易为人们所理解,研究成果也易于衡量。由于过去对许多“昆虫树木综合体”(Insect—tree combinations)的研究,在寻找和提高防治方法(包括杀虫剂、营林技术、引诱剂及利用寄生性天敌、捕食性天敌和病菌)方面取得了进展。但是,利用树木抗性来控制害虫种群,尽管一般认为是理想的治虫方法,却作得很少。 Insects harm the economic impact of trees is very large, so the prevention and control of pests is easy to understand the research work, research results are easy to measure. In the past, many studies on Insect-tree combinations have been conducted in search of and improvement of control methods (including pesticides, silvicultural techniques, attractants and utilization of parasitic natural enemies, predatory natural enemies and germs) Progress has been made. However, the use of tree resistance to control pest populations, although generally considered to be the ideal method of pest control, has been poorly documented.