TITLE:
Effect of Nitrogen Application Rates on the Nitrogen Utilization, Yield and Quality of Rice
AUTHORS:
Hanling Liang, Shiyu Gao, Jingxuan Ma, Tian Zhang, Tianyu Wang, Shuang Zhang, Zhaoxia Wu
KEYWORDS:
Nitrogen Fertilizer, Grain Yield, Rice Quality, Chalkiness, Eating Quality
JOURNAL NAME:
Food and Nutrition Sciences,
Vol.12 No.1,
January
18,
2021
ABSTRACT: 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 by an environmentally
friendly method and guarantee rice with high quality and yield, the recommended
nitrogen application rate is 210 kg N/ha.