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以19个河南主推玉米品种为材料,连续2年分别在豫西南、豫中南、豫东、豫中、豫北进行抗病性评价试验。结果表明,河南省玉米区主要病害有褐斑病、南方锈病和弯孢叶斑病,其中褐斑病在豫东发病最重,豫北、豫中和豫中南发病较轻,豫西南基本不发病;南方锈病在豫西南发病最重,豫中南、豫东和豫中中度偏重发生,豫北发病较轻;弯孢叶斑病在豫中南发病最重,豫西南、豫东、豫中中度发病,豫北发病较轻。
Nineteen main varieties of maize introduced in Henan were used as materials to evaluate the disease resistance in southwestern Henan, southern Henan, eastern Henan, central Henan, and northern Henan for two consecutive years. The results showed that the major diseases in maize area of Henan Province were brown spot, southern rust and curved leaf spot, of which the brown spot appeared the heaviest in the east of Henan, lighter in the north of Henan, The incidence of southern rust in the southwest of Henan the most serious disease, central Henan, southern and eastern Henan and Yuzhong emphasis on the occurrence of less serious in northern Henan; Curvularia leaf spot disease in southern Henan, the most serious onset, southwestern Henan, Henan, Henan Moderate incidence, less serious in northern Henan.