In order to investigate the effects of continuous straw return with fertilizer on maize yield and grain quality, an experiment of summer corn cultivar Zhengdan 958 was carried out during 2008 to 2011 at Mengcheng scientific observation station of crop cultivation in east China, Ministry of Agriculture. Four treatments were designed for no wheat-maize straw return(W0C0F1), maize straw return but not wheat straw return(W0C1F1), wheat straw return but not maize straw return(W1C0F1) and wheat-maize straw return...