Effect of Sulphur and Nitrogen Combined Application on Quantity and Yield and Yield Components of Strong Gluten Wheat
To study the effect of combined application of nitrogen and sulfur on yield and quality characters of strong gluten wheat,strong gluten wheat'Zhouyuan 9369'was used as experimental material.Three nitrogen fertilizer levels,150,300 and 45 kg/hm2,and four sulfur fertilizer levels,20,40,60 and 80 kg/hm2,were set up in the experiment.In this paper,the effects of combined application of nitrogen and sulfur on dry matter accumulation,yield and yield components,and some quality characters of'Zhouyuan 9369'were studied.The results showed that when the nitrogen application rate was at the range of 150-300 kg/hm2,the dry matter accumulation and grain yield of'Zhouyuan 9369'were increased with the increase of applying sulfur;while the nitrogen application rate was 450 kg/hm2,the dry matter accumulation and grain yield were decreased with the increase of sulfur application rate.When the nitrogen application rate was at the range of 150-300 kg/hm2,the grain protein content of'Zhouyuan 9369'was increased with the increase of applying sulfur;while the nitrogen application rate was 450 kg/hm2 and the sulfur application rate was less than 40 kg/hm2,the grain protein content was increased with the increase of sulfur application rate,but when the sulfur application rate exceeded 40 kg/hm2,the grain protein content was decreased.The content of Glutenin Macropolymer(GMP)was increased by increasing sulfur fertilizer and nitrogen fertilizer.Under the same nitrogen application rate,the content of hydrogen sulfur bond and disulfide bond in grain protein were increased,while under the same sulfur application rate,the content of hydrogen sulfur bond and disulfide bond were increased at first and then decreased with the increase of nitrogen application rate.Therefore,for the wheat field with a perennial yield of around 8200 kg/hm2,it was suggested that in the production of strong gluten wheat,nitrogen fertilizer should be controlled at the range of 150-300 kg/hm2 and sulfur fertilizer should be controlled at the range of 60-80 kg/hm2,to obtain ideal yield and quality.
nitrogen and sulfur combined applicationstrong gluten wheatquality traitsyield composition
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