最近几年,发现了绿化树种的两种类型萎蔫病态,现将病态的表现状况报道如下,以引起绿化工作者的注意,并采取相应的措施进行防治。1 病态类型①枝条逐步萎蔫枯死型发病时,枝条叶片失水萎蔫,颜色变淡,下垂但不落叶。不断蔓延致使整个病株枯死。该病的病症是维管组织变褐,病枝表皮出现白或粉红色的孢子团,排列较整齐。1984年我们发现7株紫丁香不同程度的发生萎蔫,发病期在4月下 In recent years, two types of greening tree species have been found wilting morbidities. The pathological manifestations are reported as follows to attract the attention of afforestation workers and take corresponding measures to prevent and control them. A pathological type ① branches gradually wilting dead onset, the branches of leaves wilted, color fades, drooping but not leaves. Continued to spread the entire plant died. The disease is the vascular tissue browning, diseased branches appear white or pink spores, arranged more neatly. In 1984, we found that seven strains of lilac appeared to varying degrees of wilting, the onset period in April