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1999年二、三代棉铃虫在黄河流域棉区的冀中南、鲁北、晋中南及辽河流域棉区中等偏重发生 ,四代在黄河流域棉区的冀南、豫、晋中南、陕西关中和长江流域棉区的皖、鄂、湘、赣等省为中等偏重发生 ,其中皖、鄂、湘、赣还发生了第五代。新疆棉区发生面积2 6.7万ｈｍ2 ,数千公顷棉
In 1999 two or three generations of cotton bollworm in the Yellow River cotton area of Jizhongnan, Lubei, Jinzhongnan and Liaohe River Basin cotton area moderately heavier, four generations in the Yellow River cotton area of Hebei, Henan, Jinzhongnan, Shaanxi Guanzhong and the Yangtze River The provinces of Anhui, Hubei, Hunan and Jiangxi in the cotton area of the drainage basin are moderately weighted, with the fifth generation occurring in Anhui, Hubei, Hunan and Jiangxi. An area of 27,400 hm2 in Xinjiang cotton area, thousands of hectares of cotton