一、前言 在过去的年代,我国对柑桔病虫害的防治是以虫害及真菌、细菌病害为主要对象,病毒及类似病毒病害的防治工作起步较晚。我国柑桔生产遭受黄龙病、裂皮病及衰退病等三大病害的危害较为突出。我国植物病理学者已十分注意这些病害的潜在威胁。对黄龙病病原的研究,多年来存在争论,近年来已提出类细菌,即类立克次氏体的看法;在传毒研究方面,国内首次发现长春花可作为指示植物;利用热处理防治黄龙病也取得了一定成效。类病毒病害——柑桔裂皮病(CEV),在我国各柑桔产区均已发现,蔓延 I. Preface In the past years, prevention and control of citrus pests and diseases in our country were mainly pests and fungi and bacterial diseases. Prevention and treatment of viruses and similar virus diseases started later. China’s citrus production suffer from Huanglong disease, split disease and recession and other diseases are more prominent three major hazards. Plant pathologists in our country have paid great attention to the potential threats to these diseases. The study on the pathogen of the yellow dragon’s disease has been debated for many years. In recent years, it has been suggested that the bacterium, ie, the rickettsia-like organism, is the first of its kind in China. In the study of virus transmission, Also made some achievements. Viral diseases - citrus split disease (CEV), citrus in all areas have been found in our region, spread