共 19 条
- [2] Alway FJ, 1917, SOIL SCI, V3, P9
- [4] Absorption of nutrients from subsoil in relation to crop yield [J]. BOTANICAL GAZETTE, 1924, 77 (1-4): : 121 - 148
- [5] GIST GR, 1948, J AM SOC AGRON, V40, P1036
- [8] LIPPS R. C., 1951, SOIL SCI SOC AMER PROC, V15, P329
- [9] LUTZ HJ, 1937, SCH FORESTRY B, V44
- [10] SHAW BT, 1952, AGRONOMY, V2