Low-molecular-weight (LMW) organic acids exist widely in soils and play an important role in soil processes such as mineral weathering, nutrient mobilization, and detoxification of Al.

• 摘要低分子量有机酸是土壤中广泛存在的，它们参与土壤中许多化学过程，在营养元素活化、解铝毒和矿物风化等方面发挥重要作用。