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莲(Nelumbo nucifera Gaertn)是兼具食用、入药、轻工外贸及园林水景配置多功能的水生经济植物.近年来.莲枯萎病已日益成为我省一些市、县发展莲栽培的严重威胁,1989年江陵县重病莲田,曾用该病导致翻耕,改种水稻. 一般湖泊、池塘及新发展的莲田发病轻,以稻田改种的或连作多年的莲田以及养鱼池塘发病重。自然条件下幼苗期一般不发病,成苗后期始见症状,花果期进入发病盛期。荷叶由青枯发展为枯黄下垂,呈凋萎状.但叶柄直立不倒;花蕾枯
Lotus (Nelumbo nucifera Gaertn) is a hydroponic economic plant that combines both food, medicine, light industry, foreign trade and landscape water features. In recent years, lotus wilt has become a serious threat to the development of lotus cultivation in some cities and counties of the province. 1989 In Jiangling County, a serious disease occurred in lotus fields, which used to cause overturning and rice replanting. The lakes and ponds as well as the newly developed lotus fields are less prone to disease. Under normal conditions, the seedling stage generally does not occur, see the symptoms of the late seedling stage, flowering period into the peak incidence. The lotus leaves developed from yellowish brown to yellowish brown, withered, but the petiole upright does not fall;