Table 1. Leaf instantaneous water use efficiency (IWUE μmolCO2/μmolH2O), net light-saturated photosynthetic rate (Pnmax, μmolCO2·m−2·s−1), transpiration rate (E, μmolH2O·m−2·s−1) and stomatal conductance (Gs, molH2O·m−2·s−1) of Z30 and Z16 under three fertilizer levels at different stages.
| Z30-Low | Z30-Medium | Z30-High | Z16-Low | Z16-Medium | Z16-High | ||
|---|---|---|---|---|---|---|---|
| FPS | IWUE | 4.02 ± 0.20 | 4.45 ± 0.26 | 5.75 ± 0.17 | 3.04 ± 0.10 | 3.81 ± 0.12 | 4.83 ± 0.08 |
| Pnmax | 7.21 ± 0.29 | 15.42 ± 0.43 | 19.29 ± 1.08 | 18.34 ± 0.21 | 20.24 ± 0.41 | 27.36 ± 0.98 | |
| E | 1.80 ± 0.09 | 3.49 ± 0.23 | 3.36 ± 0.22 | 6.05 ± 0.22 | 5.31 ± 0.06 | 5.66 ± 0.17 | |
| Gs | 0.08 ± 0.00 | 0.19 ± 0.01 | 0.22 ± 0.01 | 0.45 ± 0.02 | 0.41 ± 0.02 | 0.38 ± 0.02 | |
| BBOS | IWUE | 3.71 ± 0.07 | 3.87 ± 0.05 | 5.43 ± 0.16 | 2.87 ± 0.04 | 3.78 ± 0.06 | 4.70 ± 0.10 |
| Pnmax | 18.93 ± 0.31 | 21.88 ± 1.08 | 24.41 ± 0.84 | 18.35 ± 0.37 | 21.11 ± 0.57 | 28.55 ± 0.84 | |
| E | 5.11 ± 0.18 | 5.65 ± 0.24 | 4.51 ± 0.25 | 6.40 ± 0.16 | 5.59 ± 0.22 | 6.08 ± 0.31 | |
| Gs | 0.27 ± 0.01 | 0.35 ± 0.00 | 0.37 ± 0.01 | 0.36 ± 0.02 | 0.38 ± 0.01 | 0.53 ± 0.05 | |
| BOPS | IWUE | 7.55 ± 0.39 | 4.65 ± 0.12 | 5.36 ± 0.10 | 3.97 ± 0.11 | 4.53 ± 0.07 | 4.94 ± 0.02 |
| Pnmax | 14.88 ± 0.81 | 19.63 ± 1.02 | 22.57 ± 0.43 | 17.81 ± 0.20 | 20.62 ± 0.58 | 23.10 ± 0.81 | |
| E | 1.97 ± 0.08 | 4.22 ± 0.18 | 4.21 ± 0.13 | 4.49 ± 0.16 | 4.55 ± 0.12 | 4.68 ± 0.17 | |
| Gs | 0.15 ± 0.01 | 0.32 ± 0.02 | 0.33 ± 0.00 | 0.37 ± 0.02 | 0.31 ± 0.04 | 0.39 ± 0.00 |