Research Article
Regulating N Application for Rice Yield and Sustainable Eco-Agro Development in the Upper Reaches of Yellow River Basin, China
Table 7
Effects of RPN on NUE and PFP.
| Year | Treatment | Straw N uptake (kg/hm2) | Grain N uptake (kg/hm2) | Total N uptake (kg/hm2) | NUE (%) | PFP (kg grain kg−1N) |
| 2010 | CK | 37.0 | 43.5 | 80.5 b | — | — | N300 | 62.2 | 113.3 | 175.5 a | 31.7 b | 32.11 b | N240 | 61.8 | 108.3 | 170.1 a | 37.3 a | 40.13 a | RPN I | 63.2 | 114.6 | 177.8 a | 40.5 a | 43.03 a | RPN II | 68.7 | 110.4 | 179.1 a | 41.1 a | 44.7 a |
| 2011 | CK | 16.2 | 37.4 | 53.6 b | — | — | N300 | 54.3 | 95.8 | 150.1 a | 32.2 b | 28.92 b | N240 | 50.4 | 90.2 | 140.6 a | 36.3 a | 35.41 a | RPN I | 53.6 | 94.8 | 148.4 a | 39.5 a | 36.58 a | RPN II | 49.5 | 95.3 | 144.8 a | 38.0 a | 35.88 a |
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