Fig. 2From: Split nitrogen fertilizer applicationĀ improved grain yield in winter wheat (Triticum aestivum L.) via modulating antioxidant capacity and 13C photosynthate mobilization under water-saving irrigation conditionsEffects of four split nitrogen fertilizer treatments on flag leaf SPAD value at 0 days, 7 days, 14 days, 21 days, and 28 days after anthesis. **P < 0.01; *P < 0.05Back to article page