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Average N rate, total N uptake (TUN), N partial factor productivity (PFPN), N agronomic efficiency (AEN) and N recovery efficiency (REN) of N managements across six sites in Jiangsu in 2008–2013.
| Treatment | N rate (kg ha−1) | TUN (kg ha−1) | PFPN (kg kg−1) | AEN (kg kg−1) | REN (%) |
|---|---|---|---|---|---|
| CK | 0 | 98.2 b | — | — | — |
| FFP | 350 | 224.3 a | 23.7 b | 9.1 b | 36.0 b |
| OPT | 240 | 232.9 a | 36.6 a | 13.7 a | 56.1 a |
