Effect of different cultivation factor combinations on yield and quality of Ganchun No.20 spring wheat in different irrigation regions

Effects of the combinations of sowing amount, N and P2O5 application on the yield and quality of Ganchun No. 20 spring wheat in different irrigation regions of Zhangye and Jingtai. The results indicated that the best combination for Zhangye was 5932.5 thousand grains per hectare, 203.7 kg/hm2 N and 103.4 kg/hm2 P2O5, under this combination, grain yield reached to 7 747.5kg/hm2, protein yield was 1 228.95kg/hm2; for Jingtai, the best combination was 9000 thousand grains per hectare, 300 kg/hm2 N and 130.5 kg/hm2 P2O5, grain yield was 7 240.35 kg/hm2, protein yield was 1 051.5 kg/hm2. Different combinations had no significant effects on SDS-sedi-mentation volume, gluten swelling volume and water-holding capacity.