莲藕腐败病的发生与防治 莲藕腐败俗称莲瘟，是莲藕的重要病害，分布广而严重。该病主要危害地下茎部，药剂难以直接到达，防治起来很困难，是莲藕生产上的一大顽症，一般减产３０％左右，严重田块减产６０％左右。１ 症状 发病初期地上部分主要表现为整个叶缘或叶缘一边开始死 The occurrence and prevention of rotten lotus root rot commonly known as lotus root rot, is an important disease of lotus root, widely distributed and serious. The disease endanger the underground stems, drugs difficult to reach directly, it is very difficult to prevent and control, is a major chronic disease in the production of lotus root, the general reduction of about 30%, 60% of the serious reduction of plots. 1 Symptoms early on the ground part of the main performance of the entire leaf margin or leaf margin began to die