共 14 条
- [1] AMER F., 1955, Plant and Soil, V6, P391, DOI 10.1007/BF01343648
- [2] ARAMBARRI P., 1959, Plant and Soil, V11, P343, DOI 10.1007/BF01371733
- [3] BARBER STANLEY A., 1962, SOIL SCI, V93, P39, DOI 10.1097/00010694-196201000-00007
- [4] BOULDIN D. R., 1961, SOIL SCI SOC AMER PROC, V25, P476
- [5] FRIED MAURICE, 1957, SOIL SCI, V84, P427, DOI 10.1097/00010694-195712000-00001
- [8] OLSEN S. R., 1963, SOIL SCI SOC AMER PROC, V27, P648
- [9] OLSEN S. R., 1962, SOIL SCI SOC AMER PROC, V26, P222
- [10] OLSEN S. R., 1961, SOIL SCI SOC AMER PROC, V25, P289