共 27 条
[1]
ALLISON F. E., 1955, Advanc. Agron., V7, P213, DOI 10.1016/S0065-2113(08)60339-9
[2]
ALLISON F. E., 1966, Advances in Agronomy, V18, P219, DOI 10.1016/S0065-2113(08)60651-3
[3]
[Anonymous], 1954, DIAGNOSIS IMPROVEMEN
[4]
BELL RP, 1969, ACIDS BASES
[9]
HARMSEN G. W., 1955, Advanc. Agron., V7, P299, DOI 10.1016/S0065-2113(08)60341-7
[10]
Jackson ML, 1958, SOIL CHEMICAL ANALYS