二种危害小麦的草螟在中国的适生区

【目的】白眉野草螟Agriphila aeneociliella(Eversmann)是近几年在山东、山西发现严重危害小麦的新害虫,其同属的北美田草螟A.vulgivagella(Clemens)在美国和加拿大危害小麦、黑麦等,它们是否可以对全国小麦主产区构成威胁,需要进行其适生区的研究。【方法】根据现有分布区的最佳拟合获得预测参数,利用CLIMEX模型获得2种害虫在全国小麦生产区的适生区。【结果】白眉野草螟和北美田草螟在我国小麦主要产区均具有很高的适生性(EI值>20)。【结论】对白眉野草螟加强防控防止扩散危害、对北美田草螟加强检疫防止入侵我国,对保护我国小麦安全生产均具有重要意义。

Potential distribution of two wheat pests,Agriphila aeneociliella and A. vulgivagella,in China

Objectives] The insect Agriphila aeneociliella （Eversmann）] is a new pest of wheat crops that has appeared in Shandong and Shanxi Provinces in the past a few years. Another species in the same genus Agriphila Hithner, A. vulgivagella （Clemens） is also a pest of wheat and rye crops in the US and Canada. Their possibly damage areas in China is essential to wheat production. Methods] Based on actual happens and biological characters, their potential distribution areas in China were analyzed by using of CLIMEX model. Results] CLIMEX model analysis indicates that the EI values of both species are 〉 20 in most of China＇s main wheat production areas. Conclusion] It is important to both limit the spread of A. aeneociliella and prevent the introduction ofA. vulgivagella through effective quarantine measures.