Adding nitrogen fertilizer(compared the 150 kgN/hm2 applied rates with 75 kgN/hm2) had the tendency to increasing effect ears,grains per ear and decrease thousand-grain weight,but its increase or decrease variation amplitude of varieties was large.

• 增施氮肥(施氮量150 kgN/hm2与施氮量75 kgN/hm2相比)有增加小麦有效穗数和穗粒数、降低千粒重的趋势,但增加或降低的幅度在品种间有较大差异。