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由Exserohilum turcicum(Pass.)Leonard et Suggs[有性阶段是Septosphaeria turcica(Luttrell)Leonard et Suggs]引起的玉米大斑病是世界各地春玉米上发生较严重的一种叶枯性病害。它主要分布于较冷凉的亚洲北部、北美、南美、北欧和南非等地,尤以多雨和多露年份常引起病害流行,造成严重减产。美国在1939—1943年和1951—1952年与1961年期间大斑病曾多次流行,除气象条件适宜病害流行外,主要因当耐推广的杂交种都是高感大斑病的。
The maize leaf spot caused by Exserohilum turcicum (Pass.) Leonard et Suggs [Septosphaeria turcica (Luttrell) Leonard et Suggs] is a more serious leaf blight on spring maize around the world. It is mainly distributed in cooler northern Asia, North America, South America, Northern Europe and South Africa, especially in rainy and prolonged years often cause disease epidemics, causing serious cuts. In 1939-1943 and 1951-1952 and 1961, the United States had a large epidemic of spotted leaf blight, with the exception of meteorological conditions suitable for epidemics, mainly due to the promotion of the susceptible blight.