
土壤氨氮、亚硝酸盐氮、硝酸盐氮的测定氯 化钾溶液提取分光光度法
Soil-determination of ammonium nitrite and nitrate by extraction withpotassium chloride solution-spectrophotometric methods
Soil-determination of ammonium nitrite and nitrate by extraction withpotassium chloride solution-spectrophotometric methods