共 8 条
- [2] Bremner J.M., 1965, METHODS SOIL ANAL PA, P1149
- [4] Hoagland DR, 1938, CALIF AGR EXP STN B, V347, P36
- [5] SNEDECOR GW, 1956, STATISTICAL METHODS, P413
- [6] THOMAS JR, 1964, AM SOC HORTIC SCI, V85, P419
- [7] 1945, OFFICIAL METHODS ANA, P140
- [8] [No title captured]