This research was conducted to explore the effects of C & N management and the main environmental factor,namely soil temperature on soil respiration during spring maize growth period.The results showed that comparing with no fertilizer treatment,carbon and nitrogen managements improved soil respiration obviously,and the emission of CO2 (y) had been effectively controlled with the use of fertilizer(x1),straw(x2) and manure(x3) reasonably.The soil respiration could be predicted by the ternary quadratic equation y=2.2-0.1x1 +0.2 x2-0.2x1x3 +0.2x21 +0.1 x22 +0.1 x23,when x1=0.5,x2=-1,x3=0.5.It reached the minimum respiration rate value of 2.075 μmol·m-2·s-1,when the amount of fertilizer was 131 kg·ha-1,straw amount was 1 500 kg·ha-1,manure amount was 3 750 kg·ha-1.The relationship between soil respiration and soil temperat.2%;the range of temperaturesensitive coefficient Q10 was 1.86 ~ 4.71.