【摘 要】
：
白背飞虱秋季回迁虫源可影响南方稻区晚稻的田间虫量高峰,进而对晚稻造成重大损失,因此明确广东省白背飞虱秋季回迁虫源的虫源地分布,对华南稻区乃至境外稻区白背飞虱的异地
【机 构】
：
华南农业大学资源环境学院,广州510642广东省农业科学院植物保护研究所,广州510640
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白背飞虱秋季回迁虫源可影响南方稻区晚稻的田间虫量高峰,进而对晚稻造成重大损失,因此明确广东省白背飞虱秋季回迁虫源的虫源地分布,对华南稻区乃至境外稻区白背飞虱的异地预测和源头治理具有重要的意义.为此,根据广东省曲江、梅县、肇庆、汕头、雷州五个地区白背飞虱历史灯诱资料,挑选出不同年份各地区白背飞虱的秋季回迁峰次,利用HYSPLIT轨迹分析平台对广东省白背飞虱的各回迁峰次进行虫源地分析,结果表明:(1)广东白背飞虱秋季回迁高峰期主要集中在9月上旬-10月中旬,不同地区之间略有差异;(2)肇庆和雷州的白背飞虱灯诱虫量明显高于曲江、梅县和汕头;(3)广东白背飞虱秋季回迁种群的虫源地主要分布在粤北、闽赣大部、皖南、浙南稻区.但不同月份之间,白背飞虱秋季回迁虫源地的时空分布没有明显的季节性差异.
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