在氮磷钾施用水平相同及磷钾肥全部基施有情况下 ,研究了氮肥的不同施用时期和方式对冬小麦产量的影响 .结果表明 ,氮肥 6 0 %基施 ,苗肥和腊肥各占 2 0 %的处理能较好地满足小麦生长发育对营养的需求 ,明显改善了小麦的经济性状 ,产量达 2 6 7kg/ 6 6 7m2 .比氮肥 70 %基施 ,2 0 %作苗肥及后期喷施 %的处理增产 9.4% ;比氮肥 80 %基施 ,2 0 %作苗肥的处理增产 15 .6 % ;比氮肥全部基施的处理增产 2 7.1% . The effects of different application periods and modes of nitrogen fertilizer on the yield of winter wheat were studied under the same application level of NPK and total phosphorus and potassium fertilizers.The results showed that 60% 0% treatment can better meet the nutritional needs of wheat growth and development, significantly improved the economic traits of wheat, the output reached 267kg / 6 67m2 than 70% of base fertilizer N, 20% of Miao and post-Miao Spraying% of treatment increased yield 9.4%; than 80% of nitrogen base facilities, 20% of seedlings for the treatment of 15.6% yield increase; than all the nitrogen base treatment yield 21 7.1%.