共 12 条
[1]
ALEXANDER IJ, 1982, NITROGEN ECOLOGICAL
[2]
Allen S.E., 1974, CHEM ANAL ECOLOGICAL
[3]
CARLYLE JC, 1985, PLANT SOIL, V93, P95
[5]
FISCHER RF, 1969, SOIL SCI SOC AM J, V33, P955
[6]
GADGIL R L, 1975, New Zealand Journal of Forestry Science, V5, P33
[9]
Jansson S. L., 1982, Nitrogen in agricultural soils, P229