Table 4 The fine root biomass (g m2) (mean values ± SE) in different treatments. Different letters represent significant differences between treatments within each season (the starting point of this study was summer and finished at the end of spring)
| Â | Summer | Fall | Winter | Spring |
|---|---|---|---|---|
N0 | 48.6 ± 1.21 b | 46.6 ± 0.60 b | 47.2 ± 0.31 b | 48.2 ± 0.67 b |
N1 | 49.0 ± 0.65 b | 47.3 ± 0.19 b | 47.0 ± 0.59 b | 48.2 ± 0.41 b |
N2 | 49.9 ± 0.32 b | 47.8 ± 0.43 b | 47.6 ± 0.53 b | 49.9 ± 0.56 b |
N3 | 52.8 ± 0.61 a | 51.3 ± 1.21 a | 50.1 ± 0.45 a | 52.2 ± 0.44 a |