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肥料用量 = (目标养分需求量 ÷ 肥料养分含量) × 100
例:需纯氮12kg,尿素含氮46%,则尿素用量 = 12 ÷ 0.46 = 26.1kg
化肥配比计算器。农业种植工具,帮助计算种植参数与产量。