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近年来,由于人工造林面积的加大,原始天然林在不断砍伐中逐渐减少,化学农药的不合理应用,防治工作始终处于被动救灾的状态等原因,我国的林业病虫害有越发严重的趋势。此外,气候异常和干旱导致林木生长速度下降,进而造成其抗病虫能力的降低,食叶害虫和蛀干害虫的不断繁殖,给森林不同树种带来了很大危害。基于此,首先简要介绍了林业常见病虫害的种类及其特点,其次分析了病虫害的防治方法。
In recent years, forestry pests and diseases in our country have a more and more serious trend because of the increase of afforestation area, the gradual decrease of pristine natural forests in continuous deforestation, the unreasonable application of chemical pesticides and the prevention and control work in the state of passive disaster relief. In addition, climate anomalies and droughts led to a decline in the growth rate of trees, which in turn led to the reduction of their resistance to pests and diseases. The continuous propagation of leaf-feeding pests and stem-borne pests brought great harm to different forest species. Based on this, we first briefly introduced the types and characteristics of common pests and diseases in forestry, followed by the analysis of pest and disease control methods.