By the method of static chamber, a field experiment was conducted to study the effects of controlled-release fertilizer and its combination with urea under different application rates (0,80, 160 and 240 kg·hm~(-2)) on CH_4 and N_2O emissions in rice soil, with the aim of identifying an optimal fertilization management pattern in rice paddy fields to mitigate the global warming potential. The results showed that, N_2O emission and rice yield increased with increasing N application rate, while CH_4 emission and global warming potential (GWP) of CH_4 and N_2O had no positive relationship with N rate. The effects of combined application of CRF and urea on CH_4 and N_2O emissions and rice yield changed with N application rate. Over different N application rate, combined application of CRF and urea reduced N_2O emission by 3.6%~49.6% mainly during the midseason aeration (MSA) period as compared to urea. With rate of 80 kg·hm~(-2) and l60kg·hm~(-2), combined application increased CH_4 emission by 48.1% and 27.5%, GWP by 45.0% and 22.8%, respectively; while no significant difference was found in rice yield. With rate of 240kg·hm~(-2), combined application reduced CH_4 emission and GWP by 4.2%~15.1% and by 5.7%~13.9%, respectively, but increased rice yield by 7.5%~19.8%. Compared with other combined ratios (3:7,1.5:8.5, 0:1),4.5 : 5.5 is the best combined ratio of urea to CRF for the lower GWP and higher rice yield at rate of 240 kg·hm~(-2).