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石灰性水稻土中的磷素营养以无机态磷为主,磷酸钙盐含量较高,磷素的供应能力和强度较弱,施用磷肥均有不同程度的增产效果。
Phosphorus nutrition in calcareous paddy soil is dominated by inorganic phosphorus, with higher content of calcium phosphate and lower supply capacity and intensity of phosphorus. The application of phosphate fertilizer has different effects on yield increase.