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1992~1995年在云南省玉溪市北城镇刺桐关办事处石狗头村,对遭受云南松纵坑切梢小蠹危害严重的334hm2云南松林,进行了营林防治技术、害虫种群防治技术等综合治理措施示范和研究。通过4年的综合治理,示范林被害株率由防治前的62.67%下降到3.72%,下降率94.06%;蠹害指数由33.30下降到1.29,下降率为96.1%;对照林地34hm2的被害株率由39.03%,上升到90.47%,上升56.85%;蠹害指数由20.10上升到47.22,上升率为57.43%。挽回经济损失30.79万元,提高了云南松林的经济、社会、生态三大效益,取得明显效果。
From 1992 to 1995, a total of 334hm2 Pinus yunnanensis forest suffering from Pinus yunnanensis inhabiting the Pinus yunnanensis in Shigutou Village, Shicongguan Office, Beicheng Town, Yuxi City, Yunnan Province was comprehensively integrated in techniques of forest management and prevention and pest population control Demonstration and research on governance measures. Through 4 years of comprehensive management, the rate of deforestation in demonstration forest decreased from 62.67% before prevention and control to 3.72% and the rate of decrease was 94.06%. The index of wormfish decreased from 33.30 to 1.29 and the decreasing rate was 96.1%. Compared with the control, the rate of 34hm2 infected trees increased from 39.03% to 90.47%, up 56.85%. The index of wormfish increased from 20.10 to 47.22, the rate of increase was 57.43% %. The economic loss of 307,900 yuan was recovered, which improved the economic, social and ecological benefits of pine forests in Yunnan Province and achieved remarkable results.