根据目前玉米病虫害发生基数、玉米耕作栽培方式及作物布局,结合未来气候趋势预测等因素综合分析,全国农业技术推广服务中心预计今年玉米中后期病虫害总体为偏重发生,发生程度略重于常年,7月下旬至8月底为各种病虫危害盛期。一、发生种类和面积玉米中后期病虫以钻蛀性、食叶性、刺吸性害虫和叶部 According to the current corn pest occurrence base, corn cultivation and cultivation methods and crop layout, combined with future climate trend prediction and other factors comprehensive analysis, the National Agricultural Technology Extension Service Center is expected this year, maize and pest diseases in the overall emphasis on occurrence, the degree of occurrence slightly more perennial, 7 The end of August to the end of August for a variety of pests and diseases damaging. First, the occurrence of species and area of ​​corn in the late pests to borers, leafy, sucking pests and leaves