冠瘿病主要发生在根颈处,也可发生在根部及地上部。病初期出现近圆形的小瘤状物,以后逐渐增大、变硬,表面粗糙、龟裂、颜色由浅变为深褐色或黑褐色,瘤内部木质化。由于根系受到破坏,故造成病株生长缓慢,重者全株死亡。近几年来,冠瘿病开始逐步危害阿勒泰地区城市绿化苗木,并逐步扩散和蔓延,本文介绍了该病害的危害、发生规律及防控措施,为尽快控制其危害,提出了防治建议,提供科学依据。 Crown gall disease occurs mainly in the root neck, can also occur in the roots and above ground. The early emergence of small tumors near the small tumor, and then gradually increased, hardened, rough surface, cracked, the color from light to dark brown or dark brown, internal lignification of the tumor. As the root system is damaged, it causes slow growth of diseased plants, severe cases of whole plant death. In recent years, the crown gall disease began to gradually endanger the urban greening seedlings in Altay region, and gradually spread and spread, this article describes the hazards of the disease, occurrence and prevention and control measures, as soon as possible to control their harm, put forward prevention and control recommendations, to provide science in accordance with.