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.
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Claims 9
Claim · model-written summary
Appropriate nitrogen increased rice nitrogen use efficiency.
- Taxon
- Rice
Oryza sativat0 - Treatment
- 210-260 kg N/hae0
- Outcome
- nitrogen use efficiencye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“an appropriate nitrogen rate (210-260 kg N/ha) remarkably increased the nitrogen use efficiency of rice plants”
t0“Rice”
Claim · model-written summary
Appropriate nitrogen increased rice grain yield.
- Taxon
- RiceOryza sativat0
- Treatment
- 210-260 kg N/hae0
- Outcome
- grain yielde0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“an appropriate nitrogen rate (210-260 kg N/ha) remarkably increased the nitrogen use efficiency of rice plants, grain yield”
t0“Rice”
Claim · model-written summary
Appropriate nitrogen increased milling and nutritional quality.
- Taxon
- RiceOryza sativat0
- Treatment
- 210-260 kg N/hae0
- Outcome
- rice milling quality and nutritional qualitye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“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”
t0“Rice”
Claim · model-written summary
Appropriate nitrogen yielded moderate eating quality.
- Taxon
- RiceOryza sativat0
- Outcome
- moderate rice eating qualitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“resulted in a moderate rice eating quality”
t0“Rice”
Claim · model-written summary
Low nitrogen maintained high eating quality.
- Taxon
- RiceOryza sativat0
- Treatment
- 160 kg N/hae0
- Outcome
- rice eating qualitye0
- Direction
- maintainede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“low nitrogen rates (160 kg N/ha) maintained a high rice eating quality”
t0“Rice”
Claim · model-written summary
Low nitrogen decreased grain yield and other rice qualities.
- Taxon
- RiceOryza sativat0
- Treatment
- 160 kg N/hae1
- Outcome
- grain yield and other rice qualitiese0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“they decreased grain yield and other rice qualities”
e1“low nitrogen rates (160 kg N/ha)”
t0“Rice”
Claim · model-written summary
Excess nitrogen increased rice appearance quality.
- Taxon
- RiceOryza sativat0
- Treatment
- 315 kg N/hae0
- Outcome
- rice appearance qualitye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“excessive nitrogen (315 kg N/ha) increased rice appearance quality”
t0“Rice”
Claim · model-written summary
Excess nitrogen significantly reduced nitrogen use efficiency.
- Taxon
- RiceOryza sativat0
- Treatment
- 315 kg N/hae0
- Outcome
- nitrogen use efficiencye0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“excessive nitrogen (315 kg N/ha) increased rice appearance quality but significantly reduced the nitrogen use efficiency”
t0“Rice”
Claim · model-written summary
The authors recommend 210 kg N/ha to secure quality and yield.
- Taxon
- RiceOryza sativat0
- Outcome
- recommended nitrogen application rate is 210 kg N/hae0
- Value
- 210 kg N/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the recommended nitrogen application rate is 210 kg N/ha”
t0“Rice”
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