暴雨、洪灾在长江流域和东北地区肆虐,给我国农作物生产带来严重影响。近日,在山东、河南、河北等玉米主要的夏播作物区,出现历史罕见的高温高湿气候,这种异常天气给夏玉米生产带来一些疑难的问题。目前,夏玉米生长大多处于大喇叭口至抽雄前期,各地已陆续发生一些病害和生长异常问题, Heavy rains and floods raged in the Yangtze River valley and the northeast region, bringing serious impact on the crop production in our country. Recently, in Shandong, Henan, Hebei and other major summer sowing corn crop area, there is a rare history of high temperature and humidity weather, this unusual weather to summer maize production brings some difficult problems. At present, most of the summer maize growth is in the big bell mouth to the tasselling pre-emergence, some diseases and abnormal growth have occurred successively in different places,