黄龙病是我国华南地区柑桔的主要病害,它是由病毒侵入所引起的一种传染病。对于已发病的柑树,目前尚无有效的治疗方法。为了大力发展柑桔生产,及时地、正确地鉴别和处理黄龙病树,是当前生产上一项重要的措施。1960—63年,我们在前人工作的基础上,进一步开展了这项研究工作。观察方法是以蕉柑为对象,在饶平岛仔农场定园、定树,结合大田观察,记录不同树 Huanglongbing is the main disease of citrus in South China. It is an infectious disease caused by virus invasion. There is no effective treatment for the diseased citrus tree. In order to vigorously develop citrus production, the timely and correct identification and treatment of Huanglongbing tree is an important measure in current production. In 1960-63, we carried out this research further on the basis of our predecessors’ work. Observation method is to banana as the object, in Raoping Island Aberdeen farm Dingyuan, Ding tree, combined with field observation, record different trees