The experiment was conducted at the agronomy experimental station of Shandong agricultural university during the summer maize growing season in 2010.The objective was to investigate the effect of straw mulching on grain yield and soil water dynamic change of super-high-yield summer maize.Field experiments involving straw mulching with 0,0.6,1.2 kg/m2(D0,D0.6,D1.2,respectively) were conducted.The results showed that under the conditions of different straw mulching,the grain yield in case of D0.6 and D1.2 wer...