柑桔黄龙病是一种严重病害。柑桔感染黄龙病后,幼年树常在一、二年内严重衰退,甚至死亡。老年树则在二、三年内丧失结果能力,以至全园或大片园子毁灭。因此,防治柑桔黄龙病的流行是当务之急。 Citrus Huanglongbing is a serious disease. Citrus Huanglongbing infection, juvenile tree often one or two years of severe decline, or even death. Elderly trees lose their ability to produce results in two or three years, and the whole garden or large garden is destroyed. Therefore, the prevention and treatment of citrus Huanglongbing epidemic is a top priority.