Low carbon agriculture is not only an important means to mitigation climate warming, but it is necessary for China's transition from traditional to modern agriculture. Research on the impact of agricultural carbon emissions factors are significant to determine measures to agricultural emissions. Many studies have paid attention to agricultural emissions factors and the effect on agricultural emissions. However,they do not consider time differences and regional differences in agricultural emissions factors influencing agricultural emissions. Combining correspondence analysis and panel modeling,this paper analyzes stage characteristics of agricultural emissions factors affecting agricultural emissions over time. Regional differences in agricultural emissions factors from a spatial angle were also analyzed. The results show that there are two stages of agricultural carbon emissions dominating the time dimension. Agricultural carbon emissions changed from being led by an agricultural economic structure to an agricultural mechanization, then changed from being led by agricultural mechanization to being led by the agricultural development level. There were significant regional differences in agricultural carbon emissions dominant factors on the spatial dimension. The influence degree of agricultural economic development level and level of mechanization decreased from western to eastern China. The influence degree of agricultural structure decreased from eastern to central China. The influence degree of agricultural economies scale decreased from western to central China. This work provides a solid foundation for China to engage in a phased reduction and sub-regional reduction of agricultural carbon emissions,and comprehensive carbon reduction gargets.