共 7 条
[1]
Kononova M.M, 1969, SOIL ORGANIC MATTER
[2]
KUMADA K., 1967, Soil and Plant Food, V13, P151
[3]
Kumada K., 1970, Soil Science and Plant Nutrition., V16, P195
[4]
KUMADA K, 1983, SOIL SCI PLANT NUTR, V29, P383, DOI 10.1080/00380768.1983.10434641
[5]
KUMADA K, 1981, CHEM SOIL ORGANIC MA
[7]
1964, VOLCANIC ASH SOILS J