柑帖溃疡病是柑桔黄单孢菌[Xanthomonas citri(Hasse) Dowson]所致的一种细病性病害。由于此病危害严重,传染迅速,顽固难防,对柑桔产业威胁极大,已有30多个国家和地区将其定为植物检疫对象而严禁输入。目前,国内外尚无有效的根治办法,一般都是在 Citrus canker ulcer disease is caused by Xanthomonas citri (Hasse) Dowson] a small disease. As the disease is endangered, the infection is rapid, stubborn and difficult to prevent, it poses a great threat to the citrus industry. More than 30 countries and regions have designated it as the plant quarantine and are forbidden to import it. At present, there is no effective cure at home and abroad, generally