近年来,秸秆还田面积增加,小麦—玉米连作栽培制度推行,品种抗性下降和适宜气候条件等原因,玉米赤霉病[Fusarium avenaceum(Fr.)Saec]在成安县发生有加重趋势。据县农业局2005年对本地5个主要品种调查,白轴型玉米病株率30%以上,病籽率12.1%以上;红轴型玉米病株率35%以上,病籽率 In recent years, Fusarium avenaceum (Fr.) Saec has a tendency of aggravating in Cheng’an County due to the increase of straw returning area, the implementation of continuous cropping system of wheat and maize, the decreased resistance of cultivars and the suitable climatic conditions. According to the county Bureau of Agriculture survey of five major local varieties in 2005, white-axis corn disease rate of more than 30%, the diseased seed rate of 12.1% or more; red-axis corn diseased plant rate of 35% or more, the disease seed rate