The WTD (OP-wtd) corresponding to the maximum GC and GC/ET a in the NF0, NF150, NF240, and NF300 groups was G4, G3, G2, and G1, respectively, and the OP-wtd showed a decreasing trend with the increase in N application ( Figure 5B ).
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Effects of nitrogen application on winter wheat growth, water use, and yield under different shallow groundwater depths.
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