日前,全国农技推广中心发布了2012年第一期植物病虫情报,分析了农作物重大病虫害发生趋势。预计2012年全国农作物重大病虫害总体呈重发态势,全国病虫害发生总面积约为55亿亩次,同比增加4%。其中,水稻“两迁”害虫总体偏重发生,稻飞虱在西南、华南、江南、长江流域稻区偏重发生,稻纵卷叶螟在东南沿海以及沿江 Recently, the National Agricultural Technology Extension Center released the first plant pest and disease intelligence in 2012 and analyzed the trend of major pests and diseases in crops. It is estimated that major pests and diseases of crops throughout the country will be re-issued in 2012 with the total area of ​​pests and diseases of about 5.5 billion mu nationwide, an increase of 4% over the same period of last year. Among them, pests of paddy rice shifted from place to place in general, with planthoppers in the southwest, south China, south of Yangtze River and rice in the Yangtze River area, rice leaves in the southeast coast and along the Yangtze River