磷能促使葡萄浆果成熟、增色、降低酸度；钾能提高浆果的含糖量、风味、色泽、成熟度。因此，在葡萄生长过程中，增施磷钾肥，有利于增加浆果甜度。在建园时要搞好土壤调查，根据土壤中各元素的含量合理施肥，前期以氮磷肥为主，后期以磷钾肥为主，氮磷钾的比例为1：0．5－1：1 Phosphorus can promote grape berry maturity, color, reduce acidity; potassium can increase the berry sugar content, flavor, color, maturity. Therefore, in the grape growth process, the increase of phosphorus and potassium fertilizer, is conducive to increasing the sweetness of berries. In the construction of the park to do a good soil survey, according to the content of various elements in the soil reasonable fertilization, pre-dominated by nitrogen and phosphorus, mainly to phosphorus and potassium late, the proportion of NPK is 1: 0.5-1: 1