共 9 条
- [1] BOLIN B, 1977, Ambio, V6, P96
- [2] BROOKS RH, 1964, 3 COL STAT U HYDR PA
- [3] PERSSON J, 1983, NUTRIENT CYCLING AGR
- [4] RODSKJER N, 1975, Swedish Journal of Agricultural Research, V5, P223
- [6] ROSSWALL T, 1982, 1981 SWED U AGR SCI
- [7] ROSSWALL T, 1981, 1980 SWED U AGR SCI
- [8] ROSWALL T, 1983, 1982 SWED U AGR SCI
- [9] Uhlen G., 1978, SCI REPORTS AGR U NO, V57