共 10 条
[1]
ANDERSON KL, 1946, J AM SOC AGRON, V38, P1058
[2]
BROWN B. A., 1932, JOUR AMER SOC AGRON, V24, P129
[3]
Gregory F. G., 1937, ANNU REV BIOCHEM, V6, P557, DOI [DOI 10.1146/ANNUREV.BI.06.070137.003013, 10.1146/annurev.bi.06.070137.003013]
[4]
GRUNES DL, 1959, ADVANCES AGRONOMY, V9, P369
[5]
Jackson ML, 1958, SOIL CHEMICAL ANALYS
[6]
PIERRE W. H., 1937, Journal of the American Society of Agronomy, V29, P477
[8]
SHELTON JE, 1956, KENTUCKY AGR EXP STA, P47
[9]
TARAS MJ, 1958, COLORIMETRIC DETERMI, P77