作者: Arja H. Vuorinen , Maritta H. Saharinen
DOI: 10.1016/S0038-0717(96)00166-6
关键词:
摘要: … from the alkaline soil organic matter extract with acid precipitation. The SOM extract used in … not either the humic acid or the fulvic acid fraction of alkaline-extracted SOM. The effects of …