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本文通过红壤成年雪柑园在果实膨大期 ,采用氮、磷、钾三要素三水平交互配合施用后 ,可以提高果实的含糖量 ,降低含酸量从而提高果实品质。其最佳果实总体品质的氮、磷、钾肥料施用量均为每次每株 0 2kg。并初步提出了树体叶片营养含量的适宜值范围分别为 :N2 43 %～ 2 6 5 %、P0 2 0 %～ 0 2 3%、K0 94%～ 1 2 0 %。
In this paper, Adult Citrus Orchard in red soil is in the period of fruit enlargement, the three sugar levels of nitrogen, phosphorus and potassium can be used to increase the sugar content of fruit and reduce the acid content so as to improve the fruit quality. The best fruit of the overall quality of nitrogen, phosphorus and potassium fertilizer application rates are each 0 2kg per plant. The optimal range of nutrient content of tree leaves was proposed as follows: N2 43% ~ 265%, P0 20% -023%, K0 94% ~ 120%.