The invention discloses a trace element solution, which comprises at least the following metals: at least 65 mg/ml zinc directly and/or indirectly from mineral EDTA chelate(s) and/or Zn Oxide； at least 10 mg/ml manganese directly and/or indirectly from mineral EDTA chelate(s) and/or Mn carbonate； at least 15 mg/ml copper directly and/or indirectly from mineral EDTA chelate(s) and/or copper sulphate and/or copper oxide and/or carbonate； and at least 5 mg/ml selenium. The trace element solution comprises at least the following: at least 65 mg/ml zinc derived directly and/or indirectly from ZN-EDTA and/or Zn Oxide； at least 10 mg/ml manganese derived directly and/or indirectly from Mn-EDTA and/or Mn carbonate； at least 15 mg/ml copper derived directly and/or indirectly from Cu-EDTA and/or copper oxide and/or copper sulphate and/or copper carbonate； and at least 5 mg/ml selenium derived directly and/or indirectly from Na2SeO4 and/or Na2SeO3.
