Abstract: To explore the best sowing date and sowing quality of winter wheat in the middle of the guanzhong, new wheat variety‘Jiumai2’in Shaanxi Province was used as materials to studied the effects of different sowing date and sowing quality on the yield and quality based on application of N P K in proportion. This experiment designed with two factors quadratic saturation optimum, set up four levels of sowing and six processing combination, repeated three times and randomly arranged. The results revealed that suitable sowing date of‘Jiumai2’in central guangzhong was from October 11 to October 19, when its yield was 7500-8250 kg/ hm², its suitable sowing rate was 2.17×106/hm² to 2.95×106/hm². When sowed in October 17, sowing rate was 2.45×106/hm², the yield of‘Jiumai2’could increase to 8512.5 kg/hm². Different sowing date and rate also had a certain influence on the quality of‘Jiumai2’. When sowed in October 22, sowing rate of 1.8×106/hm², the grain’s quality of Jiumai was better: the sedimentation value was up to 39.23 mL, protein content was up to 14.34%; wet gluten content was up to 31.01%, stability time was 9.35min and extension area was 57.96 cm2. Therefore, suitable date and rate of sowing was beneficial to improve the yield of‘Jiumai2’, and suitable late sowing was beneficial to improve the quality, suitable late time and properly increased density was beneficial to both wheat yield and quality levels.