柑桔是一种营养丰富,经济价值较高的水果,因而柑桔生产引起了各地的重视;得到发展。但是近半个世纪以来,特别是我国南方的几个柑桔产区,遭受到黄龙病的严重危害,使柑桔生产的发展兴而复衰,产量一直在徘徊。目前黄龙病已从广东、福建、广西蔓延到浙江、江西、四川、湖南、台湾等省,严重影响了柑桔事业的发展。这是一个不可忽视的大问题。 Citrus is a nutrient-rich, high-value fruit, so the citrus production has attracted the attention of all; get development. However, since the last half a century, especially in some citrus producing areas in southern China, the disease has been seriously endangered by the yellow dragon’s disease and the development of citrus production has been reviving. Production has been hovering. At present, Huanglong disease has spread from Guangdong, Fujian and Guangxi to Zhejiang, Jiangxi, Sichuan, Hunan and Taiwan, seriously affecting the development of citrus. This is a big problem that can not be ignored.