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近年,随着农业生产水平的提高、品种的更换及耕作制度的改变,玉米病虫害的发生和为害呈加重趋势,发生严重的有玉米大斑病、小斑病等,对玉米生产造成了很大影响。1病害的种类与防治1.1玉米大、小斑病玉米大斑病和小斑病主要为害叶片,有时也侵染叶鞘和苞叶,小斑病除为害上述部位外,还可为害果穗。许多地区常将这两种病统称为“玉米斑病”。
In recent years, with the improvement of agricultural production level, the change of varieties and the change of farming system, the occurrence and damage of corn pests and diseases are aggravating. The occurrence of maize leaf spot and small spot disease is serious, which has caused a great deal of corn production influences. 1 disease types and prevention of 1.1 large corn, small spot disease Corn leaf spot and small spot disease are the main damage leaves, and sometimes infected leaf sheath and husk leaves, in addition to the small spots of the disease affected the above parts, but also harmful to the ear. In many areas, the two diseases are often referred to as “corn sting.”