广西桉树病虫害发生类型区的划分与应用

Divide and Application of Eucalyptus Pest and Disease Occurrence Type Regions in Guangxi

摘要: 广西是桉树病虫害严重发生危害的重要区域。为推进桉树病虫害精准防控，不断提升防控技术水平，本项目采用综合指数法对广西桉树病虫害发生区进行区划。区划结果为，在全自治区125个区划单元中，高发生区47个、中发生区20个、低发生区26个、零发生区32个，分别占37.6%、16.0%、20.8%、25.6%。发生区在桉树种植区均有分布。其中，高发生区主要分布在直属国有林场、梧州市、玉林市，百色市、来宾市、崇左市；中发生区主要分布在河池市、南宁市、崇左市、钦州市；低发生区主要分布在百色市、柳州市、河池市、桂林市；零发生区主要分布在桂林市、南宁市、河池市、北海市。发生区面积2,983,201.6 hm²，占全区桉树面积的94.53%，其中，高发生区1,548,117.7 hm²、中发生区857,508.0 hm²、低发生区577,575.9 hm²，分别占桉树面积的49.05%、27.17%、18.30%。对各类发生区提出了具体的监测和防治意见。

Abstract: Guangxi is an important area for the occurrence and damage of eucalyptus pests and diseases. To promote precise prevention and control of eucalyptus pests and diseases and continuously enhance technical capabilities in disease management, this project employed the Comprehensive Index Method to divide eucalyptus pest and disease occurrence areas in Guangxi. The research results were as follows: in the 125 administrative units across the entire Guangxi autonomous region, there were 47 high-incidence areas, 20 medium-incidence areas, 26 low-incidence areas, and 32 zero-incidence areas, accounting for 37.6%, 16.0%, 20.8%, and 25.6% respectively. The occurrence areas were distributed in eucalyptus planting areas in Guangxi. Among them, the high-incidence areas were mainly distributed in the state-owned forest farms, Wuzhou, Yulin, Chongzuo and Laibin. Medium-incidence areas were mainly distributed in Hechi, Nanning, Chongzuo, Qinzhou. Low-incidence areas were mainly distributed in Baise, Liuzhou, Hechi and Guilin. Zero-incidence areas were mainly distributed in Guilin, Nanning, Hechi and Beihai. The incidence areas were 2,983,201.6 hm², accounting for 94.53% of the eucalyptus plantation area. Among them, high-incidence areas covered 1,548,117.7 hm², medium-incidence areas being 857,508.0 hm², and low-incidence areas being 577,575.9 hm², accounting for 49.05%, 27.17%, and 18.30% of the total eucalyptus plantation area, respectively. Monitoring and prevention suggestions were proposed for various occurrence areas.