《Table 3–Wheat yield and yield components with different N split applications.》

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《Timing and splitting of nitrogen fertilizer supply to increase crop yield and efficiency of nitrogen utilization in a wheat–peanut relay intercropping system in China》

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In both growing seasons，N treatment significantly（P<0.001）affected the grain yield of wheat（Table 3）.Grain yields with all N fertilizer treatments were significantly increased by 36.9%–47.8%and 36.0%–41.8%，respectively，compared with those in N0.However，in comparison with N1，grain yields of N2 and N3 did not decrease despite a 30%reduction in fertilizer use.The highest yield，which averaged8283.8 kg ha-1，was observed in N3 in both years.There was no significant difference between the grain yields in N2 and N3.Yield components also differed among treatments.The effects of N treatment and year on 1000-kernel weight were significant（P<0.001）.Spike number，kernel number per spike，and 1000-kernel weight in all N fertilizer treatments were higher than those in N0，especially kernel number per spike and 1000-kernel weight.In 2016，kernel number per spike and 1000-kernel weight were increased by 4.5%and3.7%，respectively，in N2，and by 11.2%and 2.3%，respectively，in N3，compared to those in N1.In 2017，the 1000-kernel weights in N2 and N3 increased by 3.2%and 3.7%，respectively，compared to those in N1.In addition，the interaction of N treatment×year had a significant effect on the grain yield（P<0.001）.