引言研究危险性有害生物地理分布规律,明确其适生地区,是植物检疫工作的重要基础工作。对于每种检疫对象的适生区研究,不外从原产地或适通过的环境条件着手,沿着环境中的生命系统和非生命系统进行调查研究。在生命系统中主要包括食物因素(寄主植物)和天敌因素;在非生命系统中则主要包括气候因素和土壤环 Introduction It is an important basic work of plant quarantine to study the law of geographical distribution of hazardous pests and to clarify the suitable areas for them. For each kind of quarantine investigation, the research on suitable area should be based on the environmental conditions in the country of origin or passable, and the living and non-living systems in the environment should be investigated. In the life system, it mainly includes food factors (host plants) and natural enemies. In non-living systems, it mainly includes climatic factors and soil rings