共 18 条
[1]
[Anonymous], 1965, METHODS SOIL ANAL 2
[2]
BOATWRIGHT GO, 1966, AGRON J, V58, P85
[5]
KARTSEVA LN, 1967, AGROKHIMIA, V2, P21
[6]
KUDREV T, 1967, NAUKI, V4, P19
[8]
NEWMAN EI, 1966, ECOL, V3, P130