共 17 条
[1]
BARTHOLOMEW WV, 1950, 4TH T INT C SOIL SCI, V2, P112
[3]
BREMNER J. M., 1965, SOIL SCI SOC AMER PROC, V29, P504
[4]
Bremner J.M., 1965, METHODS SOIL ANAL, P1149, DOI DOI 10.2134/AGRONMONOGR9.2.C32
[5]
DETERMINATION AND ISOTOPE-RATIO ANALYSIS OF DIFFERENT FORMS OF NITROGEN IN SOILS .3. EXCHANGEABLE AMMONIUM NITRATE AND NITRITE BY EXTRACTION-DISTILLATION METHODS
[J].
SOIL SCIENCE SOCIETY OF AMERICA PROCEEDINGS,
1966, 30 (05)
:577-&
[6]
Bremner JM., 1965, ISOTOPE RATIO ANAL N
[8]
CHALK PM, 1975, AGRON J, V67
[9]
HAUCK R. D., 1971, Nitrogen-15 in soil-plant studies. Vienna, Austria, IAEA., P65