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一、下半年病虫发生趋势根据最近召开的湖北省农作物病虫发生趋势会商会分析结果,湖北省下半年农作物病虫害呈偏重至大发生趋势,防治形势十分严峻。水稻的“三虫两病”即稻飞虱、稻纵卷叶螟、螟虫、纹枯病和穗期综合症的发生程度为中等偏重(4级)至大发生(5级)。今年早稻螟虫发生程度为近10年来最重的一年。最近在崇阳县大发生的稻飞虱,见虫早、基数大、危害重,为多年少有。如防治不力,水稻的“三虫两病”可能使全省至少损失粮食50亿斤。棉花的“三虫一病”即棉铃虫、红蜘蛛、斜纹夜蛾和枯黄萎病的发生程度也将达到中等偏
First, the second half of the trend of occurrence of pests and diseases According to the recent meeting of Hubei Province crop pests and diseases will be Chamber of Commerce analysis results, Hubei Province in the second half of crop pests and diseases are prone to the trend, prevention and control situation is very serious. The incidence of rice planthopper, rice leaf roller, rice leaf borer, rice stem borer, sheath blight and panicle syndrome was moderate to moderate (Grade 4) to maximum (Grade 5). The incidence of early rice stem borers this year is the heaviest year in nearly 10 years. The recent occurrence of planthoppers in Chongyang County, see early insect, large base, endangering heavy, rare for many years. Such as poor prevention and control of rice “three worms two diseases” may cause the province at least 50 million pounds of food loss. Cotton’s “three bug disease” that the bollworm, spider mite, Spodoptera and Verticillium wilt will also reach the level of moderate