natural 15N abundance 第1页

EFFECT OF PLANTING PATTERNS ON DINITROGEN FIXATION OF ALFALFA AND TRANSFER OF N FIXED ESTIMATION OF SYMBIOTIC DINITROGEN FIXATION BY MODULATING PLANTS USING VARIATION IN NATURAL ~(15)N ABUNDANCE EVALUATION OF NATURAL ~(15)N ABUNDANCE METHOD IN ESTIMATING SYMBIOTIC DINITROGEN FIXATION BY LEGUMINOUS GRASSES