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After flowering of wheat fertilization regulation Photosynthesis Organs on Grain Quality of agricultural wheat as test material, shear leaf shading treatment at the flowering stage of wheat under different fertilizer treatments study period of Different N and different the regulation of the amount of topdressing photosynthetic organs of wheat grain appearance quality traits and nutritional quality. The results show that: 1 leaf-cutting shading nutritional indices of wheat grain content (excluding fat and zinc) than those of normal growth and reduce. Wheat cellulose shear flag leaf, phosphorus, potassium, calcium, iron and vitamins B1, B2 content was reduced by 30.09%, 23.96%, 36.69%, 18.28%, 19.75%, 22.95% and 21.32%, fat content increased by 16.9 %; spike on the accumulation of calcium, iron and vitamin B1, B2 significant impact spike after shading calcium, iron and vitamins B1, B2 content decreased by 28.03%, 17.67%, 29.37% and 17.63%; Different N dosage under shear Mans, wheat protein, vitamin E content decreased by 36.47% and 25.47%; shading of the flag leaf sheath of wheat cellulose, iron, and vitamin E content was reduced by 23.93%, 15.8% and 28.25%, respectively. Wheat after flowering, leaf organs not exist in isolation, between photosynthetic compensation and coordination role to promote the improvement of wheat grain bulk density, starch, protein, cellulose, phosphorus, potassium and other content. 2 jointing stage a certain amount of nitrogen fertilizer can improve the spike leaves defect grain appearance quality traits of wheat plants. The the different photosynthetic Less bulk density of wheat grain, starch, calcium, iron and vitamin E content source after treatment was significantly increased compared with other periods; heading stage to N topdressing different photosynthetic less wheat cellulose source after treatment, phosphorus, potassium and vitamin B1 content significantly improved; Effects of nitrogen fertilizer flowering stage photosynthetic less source of wheat protein, fat and vitamin B2 content significantly increased compared with other periods. 3 255kg/hm ~~ nitrogen fertilizer topdressing dosage can better improve the normal growth of wheat grain appearance quality traits; 0kg/hm ~ 2 ~ 255kg/hm ~ 2 nitrogen fertilizer within normal growth of plant grain starch, phosphorus and potassium content gradually improve wheat nitrogen rate 255kg/hm ~ 2, grain starch, phosphorus and potassium content of less nitrogen fertilizer increased by 13.03%, 40.97% and 300%; 150kg/hm to 2,255 kg / ha to under 2 and 300kg/hm ~ 2 amount of nitrogen, bulk density of wheat, protein, fat and calcium content the from representing 0kg/hm to 2,75 kg / hm to 2 nitrogen rate, significantly improve normal growth of plants in the fat content of wheat less 255kg/hm ~ 2 nitrogen fertilizer topdressing nitrogen fertilizer increased 108.9%, the fat content in the 300kg/hm ~ 2 nitrogen fertilizer topdressing nitrogen fertilizer increased 32.76% less; 255kg/hm nitrogen fertilizer topdressing the amount of nitrogen fertilizer for wheat fiber, vitamins B1, B2 content.
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