共 19 条
[1]
BARROWS HL, 1959, 15 DUK U SCH FOR B
[2]
BLACK CA, 1965, 9 AM SOC AGR MON
[3]
BRENDEMUEHL RH, 1968, FOREST FERTILIZATION
[4]
CHANG S. C., 1957, SOIL SCI, V84, P133, DOI 10.1097/00010694-195708000-00005
[5]
CURLIN JAMES W., 1963, SOIL SCI SOC AMER PROC, V27, P234
[7]
GROSENBAUGH LR, 1967, PSW44 USDA FOR SERV
[8]
GRUNES D. L., 1959, ADVANCES AGRON, V11, P369, DOI 10.1016/S0065-2113(08)60127-3
[10]
Jackson ML, 1958, SOIL CHEMICAL ANALYS