土壤和施肥因素对柑桔品质影响较大。经研究表明，柑桔含糖量和土壤有效磷、钾含量呈曲线正相关。适当施用磷钾肥有利于改善柑桔品质。通过扩穴改土，由根际局部熟化到全园熟化，同时增施磷钾肥，可为提高柑桔品质，加快形成丰产稳产的强健树势打下良好的基础。 Soil and fertilization factors have a significant impact on citrus quality. The research shows that citrus sugar content and soil available phosphorus and potassium content showed a positive correlation. Proper application of P and K fertilizers will improve the quality of citrus. By expanding the hole to soil, local ripening from the rhizosphere to the whole garden maturation, while increasing phosphorus and potassium fertilizers, can improve the quality of citrus and accelerate the formation of a strong and stable production of strong tree vigor and lay a good foundation.