Abstract:

4 types of the fertilizations (YH, JG, CG, CK) in Chaohu rape fields were used as samples, CH4 emission fluxes in the rape growth period were detected by using the static box-GC determination, and the soil temperature, soil moisture and air humidity were determined. The results showed that CH4 emission fluxes had obvious time variation characteristics. The amounts of emission of CH4 within YH, CG and JG increased by 21.50%, 27.33%, 29.87% respectively, compared with that of CK. Through correlation analysis of data, the results showed that CH4 emission fluxes were positive correlation with soil temperature of 10 cm depth. Soil moisture and CH4 flux was significantly positively correlated in 0.05 level.