Abstract:

18 kinds common leguminous green manure of were analyzed their trace elements (iron, zinc, manganese, copper) content in order to find which kind of green manure was suit to supply trace elements to orchard. The results suggest that the element iron content was the most, the next were zinc and manganese, the least one was copper. Among the tested 18 kinds green manure, trace elements total contents of Stizolobium cochinchinesis was 1082 mg/kg and was the highest one; the highest content of iron element zinc element and copper element were all Stizolobium cochinchinesis and respective 870 mg/kg, 105 mg/kg and 26 mg/kg; the manganese element content of Vigna angularis was 120 mg/kg and was the highest one. The preliminary view of the study was that the most suitable green manure species that could supply trace elements to orchard was Stizolobium cochinchinesis, and the least one was Cicera L.