共 13 条
[2]
BRADY N. C., 1947, SOIL SCI SOC AMER PROC, V12, P336
[3]
BRADY NC, 1945, J AM SOC AGRON, V37, P429
[4]
BRADY NC, 1945, J AM SOC AGRON, V37, P155
[5]
BURKHART LELAND, 1941, SOIL SCI SOC AMER PROC, V6, P272
[6]
COLWELL WE, 1949, J AM SOC AGRON, V11, P696
[7]
HOAGLAND DR, 1938, 347 CAL AGR EXP STA
[8]
JACKSON ML, 1958, SOIL CHEMICAL ANALYS, P331
[9]
MIDDLETON GK, 1945, J AM SOC AGRON, V37, P443
[10]
REED JF, 1948, J AM SOC AGRON, V40, P980