共 14 条
[2]
ANDERSON HA, 1977, J SOIL SCI, V28, P635
[3]
MOLECULAR-WEIGHT AND SHAPE OF HUMIC ACID FROM SEDIMENTATION AND DIFFUSION MEASUREMENTS ON FRACTIONATED EXTRACTS
[J].
JOURNAL OF SOIL SCIENCE,
1972, 23 (04)
:394-408
[4]
CAMERON RS, 1972, J SOIL SCI, V23, P343
[7]
CECCANTI B, 1986, BIOL FERT SOILS, V2, P71, DOI 10.1007/BF00257582
[8]
DENOBILI M, 1985, IN PRESS STRUCTURE I