湖北省农科院果树专家周绂答:从来信反映的发病症状分析,此病当属柑桔树脂病。柑桔树脂病因发病部位的不同而名称不同,发生在树干七叫树脂病或流胶病;发生在叶皮和幼果上叫沙皮病;发生在贮藏期果实 Hubei Provincial Academy of Agricultural Sciences fruit Zhou expert A: From the letters reflect the incidence of symptoms analysis, the disease belongs to citrus resin disease. Citrus resin etiology of the different parts of the site and the name is different, occurred in the trunk of seven called resinous disease or mellitus; occurred in the leaf and young fruit called shakin disease; occurred in the storage of fruit