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棉花黄萎病和枯萎病是黑龙港棉区生产上危害性最大的两种病害,近年来发展十分惊人,轻者减产,重者绝收,群众称之为棉花癌症。沧州地区一九九○年黄、枯萎病发生面积达93万亩,占全区植棉面积的47.20%,其中严重的43万亩。据对吴桥、东光、肃宁、盐山四县13点调查,健株结铃平均6.8个,铃重5.1克,患黄、枯萎病的棉株3.2个,铃重4.38克,减产20—40%。为此,棉花黄枯萎病应引起足够的重视,并采取相应的防治对策。一、病菌的来源及传播沧州地区原是棉花黄、
Verticillium wilt and Fusarium wilt are the two most damaging diseases in the cotton production area of Heilongjiang Province. In recent years, the development has been extremely astonishing. The light yield reduction and the heavy weight non-production are the so-called cotton cancer. In Cangzhou, the area of yellowing and wilt disease in 1993 was 93 million mu, accounting for 47.20% of the total cotton area in the region, with a serious 43 million mu. According to the investigation of Wuqiao, Dongguang, Suning and Yanshan counties at 13 o’clock, the average number of healthy plants was 6.8 and the boll weight was 5.1. There were 3.2 cotton plants with yellow and blight disease, 4.38 grams boll weight and 20- 40%. To this end, cotton yellow blight should cause enough attention, and take appropriate control measures. First, the source and spread of germs Cangzhou originally cotton yellow,