用厌氧消化液处理三种不同类型的土壤，结果表明：厌氧消化液对土壤中的Ｃｕ有强活化作用，对Ｍｎ有较强的活化作用，对Ｚｎ的活化作用与很弱。当土壤ｐＨ高于厌氧消化液时，厌氧消化液对Ｆｅ有很强的活化作用；反之，厌氧消化液中的Ｆｅ选入土壤固相。厌氧消化液对土壤微量元素的活化可能以螯合作用为主，氧化还原作用为辅。这种活化作用及其自身所携带的微量元素可能对刺激作物生长有密切的关系。 Treatment of three different types of soils with anaerobic digestion solution showed that the anaerobic digestion solution had a strong activation of Cu in the soil, a strong activation of Mn and a weak activation of Zn. When the soil pH is higher than that of anaerobic digestion solution, the anaerobic digestion solution has a strong activation effect on Fe; on the contrary, the Fe in the anaerobic digestion solution is selected into the solid phase of the soil. Anaerobic digestion of soil trace element activation may be the main chelation, supplemented by redox. This activation and the trace elements it carries may have a close relationship with stimulating crop growth.