Applying of chemical fertilizer and manure can promote the absorption for crop to nutrient and water from soil, and improve soil fertility and crop yield. But unreasonable fertilization method or excessive application of fertilizer increase the emission of CO_2 and N_2O from soil, studying on the emission of greenhouse gas after fertilization is useful to understand the emission amount and emission regularity, and these can provide scientific basis for rational fertilization. Based on the long-term fertiliz...