云南边境地区草地贪夜蛾防控屏障构建

Construction of prevention and control barriers for Spodoptera frugiperda in the border areas of Yunnan Province

草地贪夜蛾(Spodoptera frugiperda J.E.Smith)是目前中国新近入侵且最具威胁性的玉米害虫.云南边境地区,主要是哀牢山以西边境区段,是中南半岛草地贪夜蛾入侵中国的门户,及向内地迁移扩散的重要通道.本研究在对云南边境地区的生物地理特征、草地贪夜蛾的发生规律、玉米种植制度等关键要素综合分析的基础上,提出在边境地区构建草地贪夜蛾防控屏障的构想.首次提出“两带一区”的区域性防控策略,阐述并明确了划分“两带一区”的依据和区域范围;创新提出了重点防控区和防控单元的思想,探讨并阐释了确定重点防控区和防控单元的依据、原则和方法;初步总结和分析了目前边境地区采用的农药防治、诱杀、轮作和替代种植等草地贪夜蛾防控措施.提出构建云南边境草地贪夜蛾防控屏障的构想,可为云南边境地区草地贪夜蛾防控规划提供新思路.

The fall armyworm(FAW),Spodoptera frugiperda(Lepidotera:Noctuidae),is a recently arrived invasive pest in China where it threaten maize.The border area of Yunnan Province is the gateway by which FAW invaded China from the Indochina Peninsula,and it is also an important corridor for the migration and spread of FAW to the interior of China.There are a series of mountain ranges in Yunnan,among which the highest mountain range represented by the Ailao Mountains divides Yunnan into two parts.The Indochina border of Yunnan is mainly distributed to the west of the Ailao Mountains.Using the natural barrier effect of the Ailao Mountains as a control barrier for FAW movement is of strategic significance for the overall prevention and control of FAW in China.Considering FAW spread prevention and control in border areas and the whole of Yunnan,this paper reviews several key factors,such as the biogeographical characteristics of Yunnan,regulatory of FAW,and corn planting practices,and then proposes the concept of a control barrier for FAW.The“Two belt and one area”concept for regional FAW prevention and control in Yunnan is described in detail.The FAW control measures are discussed include pesticides,pheromone trapping,crop rotation and alternative crop.This review provides the theoretical basis and framework for FAW control in the border region of Yunnan Province.