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内蒙古巴彦淖尔盟是内蒙古甜菜主产区之一,年播种甜菜面积30余万亩,为自治区甜莱面积的1/3左右。该地区五十年代至七十年代甜菜的主要病害是黄化毒病和黑脚病,发病率分别为24—63％、20—40％。七十年代末至八十年代初,褐斑病病情指数从10增至34;花叶毒病发病率从0.1％增至23.7％;白粉病的发病率从8％增至56％。这几种病害的混合浸染致甜莱
Inner Mongolia Bayannur League is one of the main producing areas of sugar beet in Inner Mongolia, planted more than 30 acres of beet area, an area of about 1/3 of the sweet lotus. The main diseases of beet in the 1950s and 1970s are yellow and blackfoot diseases in the incidence rates of 24-63% and 20-40% respectively. From the late seventies to the early eighties, the disease index of brown spot increased from 10 to 34; the incidence of mosaic virus increased from 0.1% to 23.7%; the incidence of powdery mildew increased from 8% to 56%. These diseases caused by a mixture of impregnated sweet Lai