我省是国家重点林区之一,建国以来营造了大面积人工纯林和农田防护林,对增加森林后备资源,增强农田防护效益,促进农业增产,改造环境,均起到了积极作用。但随着大面积纯林的增加,森林害虫的发生也日益加剧,且有几种害虫经常猖獗成灾。今后随着营林事业的发展。人工林面积将会有较大幅度的增加,如不采取积极措施,森林虫害的发生和危害将会越来越严重,因此要很好的考虑怎样把“预防为主”的精神渗透 The province is one of the key national forest areas. Since the founding of the People’s Republic of China, a large area of ​​artificial pure forests and farmland shelterbelts have been created, playing an active role in increasing reserve resources of forests, enhancing the efficiency of farmland protection, promoting agricultural production and improving the environment. However, with the increase of large-area pure forests, the occurrence of forest pests is also aggravating and there are several kinds of pests that are often rampant and catastrophic. With the future development of forest business. Plantation area will have a more substantial increase, if not take active measures, forest pests and the occurrence of hazards will be more and more serious, so we must consider how to “prevent the main” spirit of infiltration