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人尿含氮(N)0.5%、磷(P_2O_5)0.13%、钾(K_2O)0.19%。每千斤人尿相当于25斤硫酸铵、7斤过磷酸钙和4斤硫酸钾。
Human urine nitrogen (N) 0.5%, phosphorus (P_2O_5) 0.13%, potassium (K_2O) 0.19%. Per kilogram of human urine is equivalent to 25 kg of ammonium sulfate, 7 kg of superphosphate and 4 kg of potassium sulfate.