宣威市森林病虫害危害现状及治理对策

据调查，宣威市目前有森林病害18种，虫害52种。从1986年至2003年全市累计发生森林病虫害6．7万hm^2，累计经济损失2814万元。造成病虫害严重发生的原因：人为活动导致生物链破坏、生态失衡；冬春气温偏高使越冬虫基数增大；综合防治措施不力。据此提出了今后治理对策。

Harmfulness of Forest Pest and Control Strategy of Xuanwei City

There are 18 diseases and 52 pests of forest, according to investigation. The total occurrence of forest pest from 1986-2003 has attained 67 000hm~2 and total economical loss 2.814 million yuan. Based on the artificial destruction of biological chain and ecological unbalance, increasing ground population of hibernating insect worm due to relative high temperature in autumn and spring, poor measure for integrated control, strategies for future control are put forward.