柑橘黄龙病是全国植物检疫对象,浙江省局部地区有发生。浙南山区景宁畲族自治县现有柑橘等芸香科植物1056.2hm2,普查发现有2个乡发生黄龙病,发生面积4.7hm2,占全县芸香科植物的0.44%。柑橘黄龙病为害严重,防治困难。幼龄树发病后一般2～3a就死亡,老年树发病在3～5a内枯死或丧失 Citrus Huanglongbing is the national phytosanitary target, Zhejiang Province, some areas have occurred. There are 1056.2hm2 Rutaceae plants such as citrus in Jingning Shezu Autonomous County of southern Zhejiang mountainous areas. There are 2 townships with Huanglong disease occurring in the survey, with an area of ​​4.7hm2, accounting for 0.44% of the Rutaceae plants in the county. Citrus Huanglongbing serious damage, prevention and treatment difficulties. After the onset of young trees generally 2 to 3a died, the incidence of the elderly trees within 3 ~ 5a dead or lost