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在成龄椪柑桔园连续3年施肥试验结果表明,施用钾、镁、锌、硼和钼肥对椪柑产量和品质有不同程度的影响。在红泥土和河沙土上氮磷钾平衡施较不施钾显著增加椪柑产量,分别增产14.3%和13.5%。在施用氮磷钾基础上施镁、锌、硼和钼肥,可使红泥土上椪柑果实产量依次平均增产8.6%、7.9%、7.4%和2.7%,可使河沙土上的椪柑果实产量依次平均增产4.3%、4.2%、3.1%和2.2%。施钾能增加果实的维生素C、全糖和可溶性固形物含量,而能降低全酸含量和糖/酸比。在施用氮磷钾基础上施镁、锌和硼能增加椪柑果实的维生素C、全糖和可溶性固形物含量。施钼肥导致果实中全酸含量的提高和糖/酸比的降低。在红泥土和河沙土上施钾使椪柑果皮增厚,施镁使果皮变薄,施锌硼对果皮影响甚微,施钼能明显地使果皮增厚。
The results of three consecutive years of fertilization experiment in citrus orchards in Chengzhuohuang showed that the effects of potassium, magnesium, zinc, boron and molybdenum fertilizers on the yield and quality of Citrus reticulata were different. In the red soil and river sand soil nitrogen and phosphorus balance of potassium fertilizer application of potassium significantly increased citrus production, respectively, an increase of 14.3% and 13.5%. Applying N, P, K fertilizer on the basis of applying magnesium, zinc, boron and molybdenum fertilizers can increase the yield of mandarin orange fruits by 8.6%, 7.9%, 7.4% and 2.7% on average on the red muddy soil, An average increase of 4.3%, 4.2%, 3.1% and 2.2%. Potassium application can increase the content of vitamin C, total sugar and soluble solids in fruits, but can reduce the content of total acids and sugar / acid ratio. Application of nitrogen, phosphorus and potassium based on the application of magnesium, zinc and boron can increase the citrus fruits of vitamin C, total sugar and soluble solids content. Application of molybdenum resulted in the increase of total acid content and sugar / acid ratio in fruit. Applying potassium on red earth and river sand soil thickens the peel of Citrus unshiu Marc, and thinning the peel with magnesium, and applying Zn-B has little effect on the peel, and molybdenum can obviously thicken the peel.