Soil analysis procedures using 0.01 M calcium chloride as extraction reagent
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Tài liệu tham khảo
Bregliani M.M., 1996, Possible importance of soil N‐fractions soluble in 0.01 M CaCl2
Egnér H., 1960, Kungl. Lanthr. Hogsk. Ann., 26, 199
Houba V.J.G., 1986, Neth. J. Agric. Sci., 34, 449
Houba V.J.G., 1987, Landw. Forschung, 40, 295
ISO 14255, 1998, Soil Quality—Determination of Nitrate Nitrogen, Ammonium Nitrogen and Total Soluble Nitrogen in Air‐Dry Soils Using Calcium Chloride as Extradant
Mehlich A., 1953, Determination of P, Ca, Mg, K, and NH4
Novozamsky I., 1990, Atomic Spectrosc., 11, 83