2012年12月6日至7日,中国农业技术推广服务中心组织专家对2013年农作物重大病虫害发生趋势进行了会商。预计2013年中国农作物重大病虫害总体维持重发态势,发生总面积约为55亿亩次,与2012年持平。其中,水稻“两迁”害虫(稻飞虱、稻纵卷叶螟)、小麦蚜虫、玉米螟偏重至大发生,粘虫、二点委夜蛾、小麦条锈病在部分地区偏重发生,小麦赤霉病、稻瘟病、玉米大斑病和马铃薯晚疫病流行风险较高,飞蝗和草地螟总体为中等发生。 From December 6 to December 6, 2012, China Agricultural Technology Extension Service Center organized experts to discuss the trend of major pests and diseases in crops in 2013. It is estimated that the major pests and diseases of crops in China will maintain their momentum of re-emergence in 2013 with a total area of ​​about 5.5 billion mu, the same as that of 2012. Among them, pests (rice planthoppers, rice leafroller), wheat aphids and corn borers were most prevalent in rice, armyworm, armyworm, wheat stripe rust and wheat stripe rust in some areas, The prevalence of wheat head blight, rice blast, maculote maize blight and potato late blight is high. The locust and meadow borer occur generally moderately.