共 14 条
[3]
Hall J. K., 1981, Science in Agriculture, V28, P4
[4]
Jackson M. L., 1958, SOIL CHEMICAL ANALYS, P141
[5]
KAMPRATH EJ, 1980, ROLE PHOSPHORUS AGR
[6]
MARSHALL CE, 1964, SOIL MATERIALS, V1
[8]
MEHTA N. C., 1954, SOIL SCI SOC AMER PROC, V18, P443