To evaluate the effects of different management measures on carbon balance in the inshore saline farmland, field maize-wheat rotation experiments were conducted to study CO₂ emissions and corbon balance under different management measures. The treatments were: 1) conventional control (CK); 2) application of organic fertilizer (OF); 3) the increase of nitrogen fertilizer (NF); 4) application of straw (S); 5) application of organic fertilizer and straw (OF + S); 6) no tillage (NT). The results showed that the measures of straw returned and organic fertilizer application increased the intensity of soil respiration, and the no-tillage led to the minimum average CO₂ efflux. The average carbon emission rate under different measures followed the order: OF+S > S > OM > NF > CK > NT. As crops harvest, soil organic carbon content increased in each treatment, and OF and NT led to the greatest increase in soil organic carbon, while NF did not significantly raise the level of soil organic carbon. The difference of soil organic carbon among different treatments was not significant. After the two cropping seasons, the carbon input was higher than carbon output in each treatment, which led to the net carbon input, showing the strong characteristics of carbon sink. The corbon net inputs in the treatments of S and OF were significantly higher than CK. These measures can effectively slow down the global climate change caused by the CO₂ emissions from farmland soils.