In the dryland farm，the dynamic closed-chamber method (IRGA) and the static alkali absorption method (AA) were used to measure the rate of soil respiration at the same time under 3 different tillage treatments, which were straw returned and incorporated by autumn tillage (RT) , conventional tillage (CT) and no-tillage (NT),and the determination values were compared. The results showed: (1)There are significant correlations in both methods(IRGA and AA) under the three tillage treatments and the former determination values were about 4.48, 3.74 and 4.07 times the latter,respectively;(2)Both methods(IRGA and AA) had good reliability, whose correlations were extremely significant and the regression equation was IRGA=7.42AA-9.73(p<0.01).The determination values of IRGA are about 4.11 times the ones of AA;(3)The variation coefficient of the IRGA method was higher than the AA method, the latter’s stability was better than the former.