共 9 条
[2]
BARBER SA, 1974, FERT SOLUTIONS, V18, P24
[3]
BOULDIN D. R., 1959, SOIL SCI SOC AMER PROC, V23, P338
[4]
HOFFMEISTER G, 1979, B NAT FERT DEV CEN Y, V147
[6]
Sauchelli V., 1965, PHOSPHATES AGR
[7]
STANFORD G, 1953, AGRONOMY, V4, P243
[8]
Tisdale S. L., 1975, SOIL FERTILITY FERTI