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甜菜褐斑病,是甜菜产区的主要病害。1982年赤峰市林西县隆平农场甜菜褐斑病发生面积占种植面积的30—40%,个别地块全部发生了褐斑病。但由于采取综合措施,防治及时,甜菜仍获得较好收成。甜菜褐斑病发病原因是多方面的,往往与环境和甜菜生育状况有密切关系。如在高温高湿下发病严重;重茬和迎茬地发病早而重;早播比晚播发病重;老叶比新叶发病重。但是又不能提倡晚播来防治褐斑病,因为晚播会降低甜菜产量和
Beet leaf brown spot is the main disease in sugar beet producing areas. In 1982, Chifeng Linxi County Longping farm beet leaf spot area accounted for 30-40% of the area planted, all plots occurred in all brown spot disease. However, as a result of comprehensive measures to prevent and control in a timely manner, beets still get a better harvest. The causes of beet leaf brown spot disease are many, often with the environment and the beet fertility are closely related. Such as severe disease under high temperature and humidity; stubble and stubble to the incidence of early and heavier; early sowing than the late sowing serious; older leaves than the new onset of disease. However, they can not advocate late-night broadcasts to control brown-spot disease because late-seeding will reduce the production of beet and