Abstract:To fully explore the effects of N on enhancing photosynthesis, grain quality and yield of wheat, experiments with four nitrogen levels 0 (N0), 120 (N1), 180 (N2) and 240 (N3) kg N ha− 1 and four ratios of basal to topdressing R0 (0:0), R1 (7:3), R2 (6:4) and R3 (5:5) were conducted. The effect of N topdressing ratio on improving leaf area of photosynthetic efficiency was insignificant under the same N level. The effect of N fertilization level on increasing chlorophyll content was more significant than that of… Show more
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