Effect of Nitrogen Application Rates on the Nitrogen Utilization, Yield and Quality of Rice

• 作者: Hanling Liang Shiyu Gao Jingxuan Ma Tian Zhang Tianyu Wang Shuang Zhang Zhaoxia Wu
• 来源期刊: 食品与营养科学(英文)
• 学科: 农学
• 关键词: Nitrogen Fertilizer Grain Yield Rice Quality CHALKINESS Eating Quality
• 年，卷（期）: 2021,（1）
• 页码范围: 13-27
• 页数: 15页
• 分类号: S51

摘要

Research on the effect of the nitrogen application rate on the balance of the nitrogen utilization, yield and quality of rice is common in South China but is relatively lacking in Northeast China, especially in the Liaohe Delta. In this study, Yanfeng 47 rice was planted in Panjin city, China, to explore the effect of six nitrogen rates (0, 160, 210, 260, 315 and 420 kg N/ha) on the nitrogen use efficiency, rice quality and grain yield of rice plants. The results showed that the application of an appropriate nitrogen rate (210-260 kg N/ha) remarkably increased the nitrogen use efficiency of rice plants, grain yield, rice milling quality and nutritional quality and resulted in a moderate rice eating quality. Although low nitrogen rates (160 kg N/ha) maintained a high rice eating quality, they decreased grain yield and other rice qualities, and excessive nitrogen (315 kg N/ha) increased rice appearance quality but significantly reduced the nitrogen use efficiency (p < 0.05), yield and eating quality of rice. Therefore, to produce rice in the Liaohe Delta <span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">by</span></span></span><span><span><span> an environmentally friendly method and guarantee rice with high quality and yield, the recommended nitrogen application rate is 210 kg N/ha.</span></span></span>