柑桔果树主要为金柑(Fortunella)、枳(Poncirus)和柑桔(Citrus)三属植物,其中以柑桔属最为重要。柑桔属植物的分类问题,争论激烈。早期分类学家承认柑桔属的种数不出3—4个种。本世纪四十年代与五十年代,施文格和田中长三郎先后提出了各自的柑桔分类系统,分岐很大。施文格承认柑桔属为16个种,田中开始时承认154种,晚期于1966年增加到159种。长期以来,国内外学者为更好 Citrus fruits are mainly composed of three genus of Fortunella, Poncirus and Citrus, of which Citrus is the most important. Citrus species classification, intense debate. Early taxonomists acknowledge that there are no more than 3-4 species of citrus. In the 1940s and 1950s, Shi Wenge and Tanaka Saburo have put forward their own citrus classification system, which has great differences. Shi Wenge recognized Citrus genus 16 species, Tanaka initially recognized 154 species, late in 1966 increased to 159 species. For a long time, domestic and foreign scholars as better