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

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 proportion of topdressing N after elongation stage increased 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 basic: tillering: elongation: booting N fertilizer was 3∶1∶3∶3 or 5∶1∶2∶2 with 180-240kg(N)·ha -1 , while to produce weak gluten wheat, the ratio of basic: tillering: elongation N fertilizer should be 7∶1∶2 with 180kg(N)·ha -1 and 240×10 4·ha -1 seedlings.