君子兰软腐病和疫病是比较严重的病害,现将这两种病害的发生症状和防治方法总结如下。一、软腐病1.发生症状。多发生在夏秋季高温炎热季节,在高湿、闷热、通风不良的环境,苗期、成兰期都可感染此病。发病初期叶片出现暗绿色水渍样,呈水泡状病灶,并迅速蔓延,使叶片倒伏在盆边,如不及时处理会导致整株死亡。主要危害君子兰叶片及假鳞茎,从叶茎部开始沿叶脉发展,发病初期叶片上出现水 Clivia soft rot and blight is a more serious disease, now the occurrence of these two diseases symptoms and prevention methods are summarized below. First, the soft rot 1. Symptoms. Occurs in hot summer and autumn hot season, in high humidity, hot, poorly ventilated environment, seedling stage, Cheng Lan stage can be infected with the disease. The early onset of leaves appear dark green water stain-like, blister-like lesions, and spread rapidly, so that the leaves lodging in the basin edge, if not treated will lead to death of the whole plant. The main hazards Clivia leaves and pseudobulb, starting from the leaf stem along the vein development, early onset of water on the leaves appear