共 19 条
[1]
[Anonymous], AGRONOMY
[2]
Bremner J.M., 1965, METHODS SOIL ANAL PA, P1149
[3]
BREMNER JM, 1965, SOIL NITROGEN, P93, DOI DOI 10.2134/AGRONMONOGR10.C3
[4]
DHARIWAL A. P. S., 1958, SOIL SCI, V86, P343, DOI 10.1097/00010694-195812000-00010
[6]
HINMAN W. C., 1964, CANADIAN JOUR SOIL SCI, V44, P151
[7]
KEENEY D. R., 1964, SOIL SCI SOC AMER PROC, V28, P653
[9]
FURTHER EVIDENCE FOR INABILITY OF KJELDAHL TOTAL NITROGEN METHOD TO FULLY MEASURE INDIGENOUS FIXED AMMONIUM NITROGEN IN SUBSOILS
[J].
SOIL SCIENCE SOCIETY OF AMERICA PROCEEDINGS,
1972, 36 (03)
:434-+
[10]
PIPER CS, 1951, SOIL PLANT ANALYSIS