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在系统调查的基础上,采用灰色关联分析方法对2005年安徽省水稻褐飞虱大发生的影响因子进行了研究。结果表明,8月上旬平均气温偏低、7月中旬至8月上旬极端最高气温也偏低以及8月上旬田间虫量、灯下诱虫量偏多是导致中稻褐飞虱大发生最主要的气候和虫情因子。8月中旬降雨量偏少、极端高温偏高以及8月下旬和9月初田间虫口基数偏多是导致双季晚稻褐飞虱大发生的重要气候和虫情因子。
Based on the systematic investigation, the influencing factors of rice brown planthopper occurrence in Anhui Province in 2005 were studied by using gray relational analysis. The results showed that the average temperature in early August was low, and the extreme maximum temperature was low in mid-July to early August. And in early August, Insect factor. In mid-August, the rainfall was too low, the extreme high temperature was extremely high, and the more insects in the field in late August and early September were the major climatic and insect factors that led to the occurrence of the brown planthopper in the double season late rice.