研究了涂层尿素对棉花生长发育、产量和品质性状的影响，以及与氮肥利用率和土壤肥力的关系。结果表明，涂层尿素减量施肥后各处理产量差异虽不显著，但节约了氮肥１５％～３０％，降低了成本。施用涂层尿素促进了棉株的稳健生长，提高了霜前花比例，改善了棉花品质性状。同时也增加了土壤养分，达到了平衡施肥，保持土壤肥力，有利于后作持继增产。 The effects of urea coating on the growth, yield and quality of cotton were studied, and the relationship between nitrogen utilization rate and soil fertility was also studied. The results showed that although the difference of output after treatment of coated urea was not significant, the nitrogen fertilizer was saved by 15% ~ 30%, which reduced the cost. The application of coated urea promoted the stable growth of cotton plants, increased the proportion of flowers before frost and improved the quality traits of cotton. At the same time also increased soil nutrients, to achieve a balanced fertilization, to maintain soil fertility, is conducive to sustainable growth.