共 33 条
[21]
Rhoades J.D., 1982, METHODS SOIL ANAL PA, V2nd ed., P167, DOI DOI 10.2134/AGR0NM0N0GR9.2.2ED.C10
[22]
RUNDEL PW, 1981, ROLE NUTRIENTS, P192
[25]
N-2-FIXATION IN FIELD SETTINGS - ESTIMATIONS BASED ON NATURAL N-15 ABUNDANCE
[J].
AUSTRALIAN JOURNAL OF PLANT PHYSIOLOGY,
1986, 13 (06)
:699-756
[27]
DETERMINATION AND ISOTOPE-RATIO ANALYSIS OF DIFFERENT FORMS OF NITROGEN IN SOILS .5. FIXED AMMONIUM
[J].
SOIL SCIENCE SOCIETY OF AMERICA PROCEEDINGS,
1966, 30 (05)
:587-+
[30]
VIRGINIA RA, 1988, STABLE ISOTOPES ECOL, P375