5WELCH R M.Linkages between trace elements in food crops and human health[M]//Micronutrient deficiencies in global crop production.New York:Springer,2008:287-309.
6RENGEL Z,BATTEN G D,CROWLEY D E.Agronomic approaches for improving the micronutrient density in edible portions of field crops[J].Field crops research,1999,60(1/2):27-40.
7ZHAO F J,SHEWRY P R.Recent developments in modifying crops and agronomic practice to improve human health[J].Food policy,2011,361:94-101.
