Nodulation, N\|fixing activity and total nitrogen fixation per plant of Coriaria sinica were positively correlated with leaf area and photosynthesis per plant of the host. The host with higher leaf area and capacity of photosynthesis had a higher capacity of nitrogen fixation with higher nodule and N\|fixing activity. N\|fixing activity of C. sinica nodule showed a daily variation model with a higher level (20.2μmol C 2H 2/g.h) in the day and a lower level (9.2μmol C 2H 2/g.h) in the night. The ...