Effect of the Treatment of Nitrogen and Irrigation on Grain Yield and Quality in Different Wheat Varieties

Three wheat cultivars(Triticum aestivum L.) were used to study the effects of irrigation and fertilization treatment on wheat yield,protein content and sedimentation with the orthogonal design of four factors and three levels.The results showed that the grain yield,protein content were no significant in the treatments of 300 kg/hm2 and 225 kg/hm2 nitrogen application,but they were significant more than the treatments of 150 kg/hm2 nitrogen application.The grain yield was highest in the treatment that the proportion of base fertilizer to top dressing was 7∶3 in nitrogen application.The treatment of watering 4 times was significant more than watering 2 times on grain yield,but was no significant with watering 3 times.But the protein content was highest in watering 2 times treatment.Jingdong 8 was the highest in grain yield,thousand-grain weight and test weight,CA0206 and Heyou 1 were no significant in protein content,but they were all significantly more than Jingdong 8.The sedimentation of CA0206 was significantly more than other cultivars.The 3 times watering,225 kg/hm2 nitrogen application,and the nitrogen application 7∶3 in base fertilizer to top dressing was the best for grain yield,protein content and benefit with this experimental condition,that was different to super-high-yield wheat production.