Table 1.
Effects of nitrogen supply level on yield of maize varieties with different nitrogen efficiencies
| ZD958 | XY335 | YD606 | QL368 | |
|---|---|---|---|---|
| N0 | 8721a | 8327a | 7220b | 8887a |
| N90 | 9431a | 9964a | 8866a | 10362a |
| N180 | 10153b | 10364ab | 10065b | 10889a |
| N270 | 11521a | 11974a | 10724b | 11916a |
| N360 | 11454a | 11772a | 10480b | 11717a |
| Nitrogenous fertilizer (F) | 61.84* | |||
| Cultivars (C) | 19.12* | |||
Note: Different lowercase letters of different varieties indicate significant differences among varieties (P < 0.05). “*” indicates the significance at the 0.01 level.