Table 3 The P balance, URP and AEP values under the different treatments.
Year | Treatments | P input (kg·hm−2) | Plant P uptake (kg·hm−2) | P balance (kg·hm−2) | URP (%) | AEP (kg·hm−2) |
|---|---|---|---|---|---|---|
2010 | OM | 534.42 | 51.00 ± 6.57bB | 483.42 ± 38.42aA | 4.64 ± 1.45bB | 50.06 ± 6.48bB |
CF | 534.42 | 75.83 ± 5.42aA | 458.59 ± 42.56bA | 9.29 ± 3.26aA | 112.15 ± 13.24aA | |
CK | 0 | 26.18 ± 3.18cC | −26.18 ± 5.44cB | — | — | |
2011 | OM | 534.42 | 45.12 ± 3.67bB | 489.30 ± 41.68aA | 5.06 ± 1.87bB | 59.42 ± 5.73bB |
CF | 534.42 | 76.64 ± 12.15aA | 457.78 ± 46.75bB | 10.95 ± 4.21aA | 131.04 ± 15.25aA | |
CK | 0 | 18.10 ± 1.14cC | −18.10 ± 3.54cC | — | — | |
2012 | OM | 534.42 | 40.10 ± 4.55bB | 494.32 ± 58.47aA | 5.75 ± 2.14bB | 65.95 ± 6.14bB |
CF | 534.42 | 77.80 ± 6.89aA | 456.62 ± 32.48bB | 12.81 ± 4.35aA | 150.47 ± 16.28aA | |
CK | 0 | 9.36 ± 1.42cC | −9.36 ± 2.56cC | — | — | |
2013 | OM | 534.42 | 36.42 ± 5.47bB | 498.00 ± 62.14aA | 5.64 ± 3.37bB | 63.07 ± 4.79bB |
CF | 534.42 | 73.34 ± 6.64aA | 461.08 ± 35.41bB | 12.55 ± 4.56aA | 147.95 ± 15.33aA | |
CK | 0 | 6.26 ± 0.89cC | −6.26 ± 3.42cC | — | — |
