棉花茎枯病是一种真菌性病害,近年来在上海地区的发生日益增多。我场自一九六八年普遍种植海岛棉后,茎枯病的危害越来越重,已经成为棉花苗期的主要病害,造成很大的损失。一九七三年全场六千一百多亩海岛棉,发生茎枯病的有四千七百多亩,其中死苗一半以上的占五百八十多亩,还有一百亩棉田因死苗过多只得翻耕重种。 Cotton blight is a fungal disease that has been increasing in Shanghai in recent years. Since the widespread cultivation of island cotton in 1968, the harm of stem blight has become more and more serious. It has become a major disease at cotton seedling stage, causing great losses. In 1973, a total of 6,100 acres of island cotton were planted, with 4,700 mu of stem blight, of which more than half of the dead seedlings accounted for 580 mu. There were also 100 mu of cotton fields Dead seedlings have too much plowing.