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通过对“在整个三北防护林受天牛危害的林网中更新较快、克服了一代林网树种单一的缺点、以抗天牛为主的树种组成的宁夏银北二代防护林网”建成 10a后的天牛等虫害为害情况的分析 ,指出 :在人工林完成“森林”发育以前的早期阶段 ,特别在我国三北地区这样的自然环境条件下 ,完全依靠包括树种抗虫特性在内的自然的力量解决初建人工林的病虫害问题是不大可能的 ,努力开发新的 ,当某种病虫害来临或将要来临时 ,既能快速有效地予以扑灭、又不对已形成的初步的森林生态系统产生破坏的防治技术体系 ,以为人工林向“森林”生态的演进护航 ,是解决我国森林病虫害问题的关键
Through the “Three-North Shelterbelt by Tian Beef endanger the forest network update faster to overcome the single generation of Lin Wang network tree shortcomings to anti-day cattle-based species consisting of Ningxia Yinbei II shelterbelts network” built 10a The results showed that in the early stage before the plantation completed the development of “forest”, especially under the natural environment such as the Three North region of our country, it was entirely dependent on the natural It is not possible to solve the problem of plant diseases and insect pests in newly built plantations. It is very hard to develop new ones that can be quickly and effectively extinguished only when a pest or disease is coming or is coming, and not generating any initial forest ecosystems that have already formed Destruction of the prevention and control technology system, that the artificial forest to the “forest” ecological escort, is the key to solve the problem of forest pests and diseases in our country