Abstract
The effects of application of N fertilizer on wheat on the grain yield and N use efficiency (FNUE) of rice in the wheat-rice rotation system, as well as on the soil fertility were studies. N-fertilizer application on wheat significantly increased total N, ammonium-N and nitrate-N contents in paddy field, resulting in high indigenous N supply of soil (INS). Compared with low INS, the effect of N rate on the grain yield of rice was reduced significantly, and FNUE was decreased under high INS. These results indicated that high INS was one of the main reasons for the low FNUE in rice.
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Claims 4
Claim · model-written summary
N fertilizer applied to wheat significantly increased total N, ammonium-N and nitrate-N contents in the paddy soil.
- Taxon
- Rice
Oryza sativat0 - Treatment
- N-fertilizer application on wheate1
- Outcome
- total N, ammonium-N and nitrate-N contentse1
- Direction
- increasede1
- Setting
- paddy fielde1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“N-fertilizer application on wheat significantly increased total N, ammonium-N and nitrate-N contents in paddy field”
t0“Efficiency in Rice”
Claim · model-written summary
Under high indigenous N supply the rice grain yield response to N rate was significantly reduced compared with low supply.
- Taxon
- RiceOryza sativat0
- Treatment
- N ratee2
- Outcome
- effect of N rate on the grain yield of ricee2
- Direction
- reducede2
- Comparator
- low INSe2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Compared with low INS, the effect of N rate on the grain yield of rice was reduced significantly”
t0“Efficiency in Rice”
Claim · model-written summary
FNUE of rice was decreased under high indigenous N supply compared with low supply.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Compared with low INS, the effect of N rate on the grain yield of rice was reduced significantly”
e3“FNUE was decreased under high INS”
t0“Efficiency in Rice”
Claim · model-written summary
High indigenous N supply was one of the main reasons for the low FNUE of rice.
- Taxon
- RiceOryza sativat0
- Treatment
- high INSe4
- Outcome
- low FNUEe4
- Qualifier
- one of the main reasonse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“high INS was one of the main reasons for the low FNUE in rice”
t0“Efficiency in Rice”
The same questions in other papers
nitrogen · yield · Oryza sativa (rice)Positive and negative results
241 papers in the same direction as this paper · 1,803 in the opposite direction
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