Abstract:

In order to evaluate the different fertilization on CO2 greenhouse gas emissions of rape fields, to better guide the farmers to improve fertilization methods to reduce greenhouse gas emissions. The study were 4 types of the fertilizations (YH, JG, CG, CK) in Chaohu rape fields, using the static box-GC determination of the growth of rape period of CO2 emission fluxes, while soil temperature, soil moisture and air humidity were determined, correlation analysis of data obtained different fertilizations treatments had great effects on CO2 emissions. CO2 emission flux of CK treatment was the smallest, but the effect of different fertilizations was not correlation. In soil temperature of 10 cm depth the following conduct straw fertilization on the CO2 emissions of rape there was a significant positive correlation. In the effect of CO2 emissions on soil moisture only JG treatment showed a significant negative correlation. And in 4 types of the fertilizations, YH was the most worthy of promotion.