共 30 条
[21]
MARIOTTI A, 1982, MEM SCI TERRE U CURI, V8213
[23]
QUANTIFYING DINITROGEN (N2) FIXATION IN SOYBEANS BY N-15 ISOTOPE-DILUTION - THE QUESTION OF THE NON-FIXING CONTROL PLANT
[J].
CANADIAN JOURNAL OF BOTANY-REVUE CANADIENNE DE BOTANIQUE,
1982, 60 (06)
:856-861
[27]
SELECTION FOR N-CONCENTRATION AND FORAGE YIELD IN ALFALFA
[J].
CROP SCIENCE,
1984, 24 (03)
:553-558
[29]
WILLIAMS PC, 1975, CEREAL CHEM, V52, P561