共 26 条
[1]
ALLEN A L, 1973, Journal of Environmental Quality, V2, P120, DOI 10.2134/jeq1973.00472425000200010021x
[4]
Bremner J. M., 1996, METHODS SOIL ANAL 3, P1085
[7]
Dobereiner J., 1975, International Biological Programme, P39
[8]
HACUK RD, 1976, ADV AGRON, V28, P219
[9]
HAUCK R. D., 1971, Nitrogen-15 in soil-plant studies. Vienna, Austria, IAEA., P65