共 12 条
[1]
[Anonymous], 1981, SOIL BIOCH
[2]
Beaton J. D., 1978, Crops and Soils Magazine, V30, P11
[3]
COOKE GW, 1969, B DOC INT SUPERPHOSP, V53, P1
[4]
DOUGLAS L A, 1970, Soil Science Society of America Proceedings, V34, P859
[5]
ENGELSTAD OP, 1974, CROPS SOILS, V26, P11
[6]
Gasser J. K. R., 1964, Soils and Fertilizers, V27, P175
[7]
HELD P, 1976, Patent No. 122177
[10]
MULVANEY RL, 1978, SOIL SCI SOC AM J, V41, P1024