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Experimental design.
| Treatment | Irrigation Level (% θfc) | Nitrogen Application Level (kg·ha−1) | |
|---|---|---|---|
| W0N0 | Fully irrigated | 75~85 | 0 |
| W0N1 | 150 | ||
| W0N2 | 300 | ||
| W0N3 | 450 | ||
| W1N0 | Mild water deficit | 65~75 | 0 |
| W1N1 | 150 | ||
| W1N2 | 300 | ||
| W1N3 | 450 | ||
| W2N0 | Moderate water deficit | 55~65 | 0 |
| W2N1 | 150 | ||
| W2N2 | 300 | ||
| W2N3 | 450 | ||
| W3N0 | Severe water deficit | 45~55 | 0 |
| W3N1 | 150 | ||
| W3N2 | 300 | ||
| W3N3 | 450 | ||
