共 19 条
[2]
ASO S, 1975, AUG INT S HUM PLANT, P1
[3]
TITRIMETRIC DETERMINATION OF ACIDITY AND PK VALUES OF HUMIC ACID
[J].
ACTA CHEMICA SCANDINAVICA SERIES A-PHYSICAL AND INORGANIC CHEMISTRY,
1974, A 28 (01)
:121-122
[6]
Kumada K., 1955, SOIL PLANT FOOD, V1, P29, DOI 10.1080/00380768.1955.10434360
[8]
MATSUDA K, 1970, Soil Science and Plant Nutrition, V16, P1