本文就氮肥不同追肥时期和比例对春小麦籽粒产量和品质的影响进行了研究．结果表明，产量、蛋白质产量及蛋白质含量均随追氮比例的增加而增加．综合产量和品质以追氮７５％左右为宜．在追肥时期上，早追和重追分蘖肥对产量及品质均有不利影响，而孕穗期追肥可协调产量和品质的关系，使高产和品质能够有机的结合． In this paper, the effect of different top-dressing period and proportion of nitrogen fertilizer on grain yield and quality of spring wheat was studied. The results showed that the yield, protein yield and protein content increased with the increase of nitrogen uptake rate. Comprehensive output and quality to 75% of nitrogen is appropriate. In the top dressing period, early chase and heavy chasing tillering fertilizer have adverse effects on yield and quality, while dressing at booting stage can coordinate the relationship between yield and quality, so that high yield and quality can be organically combined.