| 年份 Year | 处理 Treatment | 氮素输入Nitrogen input | 氮素输出Nitrogen output | ||||
|---|---|---|---|---|---|---|---|
| 施氮量 N fertilizer | 起始无机氮 Initial inorganic N | 净矿化 mineralization | 作物携出 Potato uptake | 残留无机氮 Residual inorganic N | 氮表观损失 Apparent N loss | ||
| 2014 | CK | 0 | 142.4 | 55.5 | 124.3d | 73.6c | 0 |
| CU | 200 | 142.4 | 55.5 | 164.5c | 129.1b | 104.3a | |
| SCU | 200 | 142.4 | 55.5 | 183.1b | 139.1a | 75.7b | |
| CRF | 200 | 142.4 | 55.5 | 193.7a | 144.6a | 59.6c | |
| SU | 200 | 142.4 | 55.5 | 187.9ab | 148.2a | 61.8c | |
| UF | 200 | 142.4 | 55.5 | 182.5b | 150.2a | 65.2c | |
| 2015 | CK | 0 | 152.5 | 52.0 | 116.0d | 88.5c | 0 |
| CU | 200 | 152.5 | 52.0 | 171.4c | 136.4b | 96.7a | |
| SCU | 200 | 152.5 | 52.0 | 189.1b | 146.2a | 69.2b | |
| CRF | 200 | 152.5 | 52.0 | 197.9a | 153.8a | 52.8c | |
| SU | 200 | 152.5 | 52.0 | 194.6ab | 155.7a | 54.2c | |
| UF | 200 | 152.5 | 52.0 | 187.5b | 158.5a | 58.5c | |
| 方差分析 ANOVA | |||||||
| 年份(Y) | — | — | — | * | ** | * | |
| 施肥处理(F) | — | — | — | ** | ** | ** | |
| 年份×施肥处理(Y×F) | — | — | — | * | NS | NS | |
