共 36 条
[23]
Nelson DW., 1982, METHODS SOIL ANAL, P571
[25]
Papendick R. I., 1981, SSSA Special Publication, P1
[26]
PAUL EA, 1978, 11TH INT C SOIL SCI, V3, P61
[28]
Sauerbeck D. R., 1977, International Atomic Energy Agency: Soil organic matter studies. Vol. 1., P141
[30]
SMITH JH, 1966, USE ISOTOPES SOIL OR, P223