Effect of Applying Period of Nitrogen Fertilization on Yield and Quality of Wheat

The effect of nitrogen fertilization on yield and quality of wheat was studied in the different growth stages of wheat in Jiuquan city.The results showed that the amount of nitrogen topdressing can increase the total number of wheat stem,effective panicles per plant,grain number per panicle,1 000-grain weight and yield at different growth period under the condition of base application nitrogen was 120.0 kg/hm2,total nitrogen was 240.0 kg/hm2.The yield were increased significantly by one-time topdressing nitrogen 120.0 kg/hm2 in the seedling stage,or nitrogen respectively 60.0 kg/hm2 in the seedling stage and jointing stage,it can increased 16.3% and 7.2% higher than of the check of no fertilizer,respectively,dressing nitrogen 60.0 kg/hm2 can improve coarse grain protein content,improve the quality of wheat in the flowering stage.