在酒泉市进行了小麦不同生育期施用氮肥对产量与品质的影响试验，结果表明，在播前基施氮肥120.0 kg/hm2、总施氮量240.0 kg/hm2的前提下，不同生育时期追施一定量的氮肥均可增加小麦的总茎数、有效穗数、穗粒数、千粒重和产量，以苗期一次性追施氮120.0 kg/hm2和苗期、拔节期分别施氮60.0 kg/hm2处理的增产效果明显，较不施肥分别增产16.3%和7.2%；扬花期追施氮肥60.0 kg/hm2能够提高籽粒粗蛋白质含量，改善小麦品质。

The effect of nitrogen fertilization on yield and quality of wheat was studied in the different growth stages of wheat in Jiuquan city . The results showed that the amount of nitrogen topdressing can increase the total number of wheat stem， effective panicles per plant， grain number per panicle， 1 000-grain weight and yield at different growth period under the condition of base application nitrogen was 120.0 kg/hm2， total nitrogen was 240.0 kg/hm2 . The yield were increased significantly by one-time topdressing nitrogen 120.0 kg/hm2 in the seedling stage， or nitrogen respectively 60.0 kg/hm2 in the seedling stage and jointing stage， it can increased 16.3% and 7.2% higher than of the check of no fertilizer， respectively， dressing nitrogen 60.0 kg/hm2 can improve coarse grain protein content， improve the quality of wheat in the flowering stage .

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