共 16 条
- [1] [Anonymous], AGRONOMY
- [2] Bremner J.M., 1965, METHODS SOIL ANAL PA, P1149
- [4] USE OF TRACERS FOR SOIL AND FERTILIZER NITROGEN RESEARCH [J]. ADVANCES IN AGRONOMY, 1976, 28 : 219 - 266
- [5] KEENEY D.R., 1982, AGRONOMY, V22, P605, DOI DOI 10.2134/AGRONMONOGR22.C16
- [6] KLEINKOPF GE, 1982, CIS637 U ID
- [9] PAINTER CG, 1977, CIS261 U ID