柑桔缺锌表现为新梢的叶片除主侧脉为绿色外,其余部分均为黄色,严重时,新梢短而纤细。叶片窄小,称之“小叶病”。果个小皮薄、果汁少而味酸,致使果实的品质差、产量低。引起柑桔缺锌的主要原因:一是柑桔园中土壤含锌量少,且易流失。二是过量施用磷肥,磷与锌化合而生成磷酸锌或 Zinc deficiency in the citrus showed that the shoots of the shoots were yellow except for the main lateral veins, and the shoots were short and slender in severe cases. Narrow leaves, called “lobular disease.” Fruit a small thin skin, fruit juice and pickle, resulting in poor fruit quality, low yield. The main causes of zinc deficiency in citrus: First, citrus orchards in the soil less zinc, and easy to drain. Second, over-application of phosphate fertilizer, phosphorus and zinc compound to generate zinc phosphate or