据全国农技中心组织科研、教学和推广单位专家分析预测,2016年全国玉米主要病虫害呈偏重发生态势,预计发生面积为11.8亿亩次。其中,虫害预计发生8.7亿亩次,病害预计发生3.1亿亩次。东北和华北地区以玉米螟、地下害虫、大斑病为害最重,黄淮海地区以棉铃虫、二点委夜蛾、褐斑病、南方锈病发生突出,西北和西南地区以蚜虫、叶螨、小斑病发生普遍,粘虫在北方局部地区出现高密度集中为害的可能性 According to the analysis and forecast of experts from scientific research, teaching and promotion units of the National Agricultural Technology Center, the major diseases and pests of maize in China are expected to take a heavy position in 2016 with an estimated area of ​​1.18 billion mu. Among them, the pest is estimated to occur 870 million mu times, the disease is expected to occur 3.1 million mu times. In Northeast China and North China, corn borers, underground pests and spotted leaves were most seriously damaged. In the area of ​​Huang-Huai-Hai, bollworm, two-stage western armyworm, brown spot and southern rust occurred prominently. Aphids, spider mites, The occurrence of small spot disease is common, and the possibility of high concentration of armyworm in the northern part of the country may occur