Effects of Nitrogen on Grain Yield, Nutritional and Processing Quality of Wheat for Different End Uses

摘要

The effects of nitrogen on grain yield, nutritional quality and processing quality of wheat for different end uses were studied in Yangzhou from 2000 to 2002. Increasing N application amount and/or the ratio of topdressing N after elongation stage could raise grain yield, protein content, wet gluten content, sedimentation, falling number, development time and stability time. To produce strong-gluten and medium-gluten wheat, the suitable ratio of basis : tillering : elongation : booting N fertilizer was 3 : 1 : 3 : 3 or 5 : 1 : 2 : 2 with 180 - 240 kg N ha~(-1). To produce weak-gluten wheat, the ratio of basis : tillering : elongation N fertilizer should be 7 : 1 : 2 with 180 kg N ha~(-1) and 240 X 10~4 ha~(-1) seedlings.