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于2006~2007年对云南省大理州玉米上新发生的病害——玉米灰斑病菌(Cercospora zeae-maydis)进行调查.结果表明,该病主要在玉米大喇叭口期——成熟期发生,发病高峰期在8月下旬至9月中上旬,此期间降雨量和温度对病害流行影响较大.品种抗性、海拔高度、种植密度及施肥水平也影响病害发生严重程度.化学防治药剂以苯醚甲环唑类、丙环唑类等防效较好.
A survey of the newly occurring Cercospora zeae-maydis in maize in Dali Prefecture, Yunnan Province from 2006 to 2007 showed that the disease mainly occurred during the maize trumpet stage and maturity The peak period from late August to mid-September, rainfall and temperature during this period have a greater impact on the epidemic. Variety resistance, altitude, planting density and fertilization levels also affect the severity of the disease.Chemical agents for the prevention and treatment of benzene ether A pyrazole, propiconazole and other good control effect.