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甜菜褐斑病为真菌性病害(Cercospora beticola)。我国受太平洋季风的影响,每年夏季高温多雨,7、8、9月份雨量占年降雨量60％以上,有利于该病广泛流行,较之世界其它地区为害更大。其中尤以中部地区发生更为严重,山东、江苏等省一般可减产30％以上,含糖下降2—3％,已成为发展甜菜生产的主要威胁。因此防治甜菜褐斑病就成为甜菜
Beet leaf brown spot is a fungal disease (Cercospora beticola). Affected by the Pacific monsoon, China suffers from high temperatures and rainy summers every year, and more than 60% of annual rainfall in July, August and September, which is conducive to the widespread prevalence of the disease and is even more detrimental than other parts of the world. Especially in the central region more serious, Shandong, Jiangsu and other provinces can generally cut more than 30%, 2-3% decline in sugar, has become the main threat to the development of sugar beet production. Therefore, the prevention and control of beet leaf brown sugar beet