柑桔黄龙病是南方柑桔生产上最具毁灭性的传染性病害,早已被列为我国的检疫对象。解放初期,本病只分布于广东、福建、广西等三省(区)。在十年动乱期间,植检工作被视为关卡压而受到严重破坏,柑桔苗木乱调运致使本病传播蔓延,现已扩散到四川、云南、贵州、江西、湖南、浙江等,加上台湾 Citrus Huanglongbing is the most devastating infectious disease in the production of southern citrus and has long been listed as a quarantine object in China. Early liberation, the disease is only distributed in Guangdong, Fujian, Guangxi and other provinces (districts). During the 10 years of turmoil, phytosanitary work has been regarded as a barrier and severely damaged. As a result of the disorderly transport of citrus and seedlings, the spread of this disease has spread to Sichuan, Yunnan, Guizhou, Jiangxi, Hunan and Zhejiang provinces, together with Taiwan