How is the Shimai 15 wheat variety?
Characteristics: semi-winter type, medium maturity, maturing about 1 day later than the control Shi 4185. Seedlings are prostrate, with strong growth, strong tillering ability, and a high rate of productive tillering. Plant height is about 78 cm, with a compact plant type, thin stems, small and upright flag leaves, curled leaves, a short internode below the spike, and a neat spike layer. The spike is spindle-shaped, small, with densely arranged spikelets, short awns, white glumes, and white grains that are plump and semi-hard. The average number of spikes per mu is 435,000, the number of grains per spike is 35.6, and the 1,000-grain weight is 38.4 g. Lodging resistance is average. Yellowing at maturity is relatively good. Cold resistance identification: good cold resistance. Disease resistance identification: moderately resistant to stem rust, slow leaf rust, moderately susceptible to highly susceptible to stripe rust, highly susceptible to Fusarium head blight, sheath blight, and powdery mildew. Mixed samples tested in 2006 and 2007 respectively: test weight 789 g/L and 784 g/L, protein (dry basis) content 13.48% and 14.01%, wet gluten content 30.1% and 31%, sedimentation value 20.0 ml and 18.8 ml, water absorption 56.0% and 56.9%, stability time 2.0 minutes and 1.4 minutes, maximum resistance to extension 119 E.U and 88 E.U, extensibility 11.6 cm and 11.8 cm, extension area 20 sq cm and 14 sq cm.
Yield performance: in the 2005-2006 season, it participated in the variety regional trial of the northern irrigated land group in the Huang-Huai winter wheat region, with an average yield of 523.8 kg per mu, an increase of 5.24% over the control Shi 4185; in the 2006-2007 season continued trial, the average yield was 531.3 kg per mu, an increase of 4.03% over the control Shi 4185. In the 2006-2007 production trial, the average yield was 575.2 kg per mu, an increase of 4.34% over the control Shi 4185.
Key cultivation techniques: the suitable sowing period is October 1-15. The sowing rate should be strictly controlled, with a suitable basic seedling population per mu of 150,000-180,000 seedlings for high water and fertility land, and 180,000-200,000 seedlings for medium water and fertility land. Pay attention to disease prevention in the later stage. On high water and fertility land, pay attention to lodging prevention.