The results showed that 5 varieties of DK743, DK656, YY22, ZD2 and HD1 had high nitrogen use efficiency (NUE), but another two varieties of JD2 and SY905 had low NUE.

• 结果表明，DK743、DK656、豫玉22、中单2号、户单1号5个品种N素营养效率较高；酒单2号和石玉905是低N素营养效率的品种。