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近年来,湖北省有些地区玉米病害发生频繁,除常见的玉米大小斑病外,病毒病等发生比较普遍,尤其是在西部山区,玉米病毒病发生已严重地影响玉米的生产。为了逐步查明玉米病原病毒的种类及其发生规律,我们于1982—1984年在玉米病毒病发生期间,对襄樊市的保康县、南漳县,郧阳地区的房县,均县等玉米种植区进行了矮缩花叶病发病情况的调查。1982年保康县种植的恩单2号,发病率为3—5％,拍拉马地为90％。1983年南漳县种植的恩单2号,发病率为5—8％;武昌种植的拍拉马地,发病
In recent years, there are frequent maize diseases in some areas of Hubei Province. In addition to the common maize spot and spot disease, virus diseases are more common. Especially in the western mountainous areas, the occurrence of maize virus disease has seriously affected the production of maize. In order to gradually identify the types of maize pathogens and their occurrence, during the period of 1982-1984, we studied the occurrence of maize virus diseases in Baokang county, Nanzhang county, Fangyang county and Junxian county in Xiangfan city Investigation of the incidence of dwarf mosaic disease in the planting area. In 1982, the No. 2 Enning single planted in Baokang County was 3-5% with a rate of 90% in Shimalama. In 1983, Nanzhang County, the planting of En Dan 2, the incidence rate of 5-8%; Wuchang planting flaxma, the incidence