Abstract
The applicability of five nitrogen (N) dressing methods to rice cultivation was examined using the canopy spectrum-based nitrogen optimization algorithm (CSNOA), leaf area index (LAI), site-specific N management (SSNM), N nutrition index (NNI), and N fertilizer optimization algorithm (NFOA). After base-tiller N dressing (basal dressing and top dressing at the tillering stage) at low and normal levels, rice plants were grown by the above five N dressing methods. The effects of different N dressing methods on plant dry weight, plant N accumulation, grain yield, N use efficiency, and economic benefit were analyzed. Compared with the standard method, under the low base-tiller N dressing level, the optimum N dressing rate was decreased, and the economic benefit was increased by adapting the N dressing methods of CSNOA and SSNM, whereas the optimum N dressing rate was increased, and the economic benefit was decreased by the other three N dressing methods. Under the general base-tiller N dressing level, the optimum N rate, N-use efficiency and economic benefit were increased by all N dressing methods except the NFOA. These results indicated that the CSNOA and SSNM were two good techniques for quantifying N dressing in rice, with higher economic benefit, less N input, and better applicability under different base-tiller N dressing levels.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 12
Claim · model-written summary
At low base-tiller nitrogen, CSNOA reduced the optimum dressing rate relative to the standard method.
- Taxon
- rice
Oryza sativat0 - Treatment
- CSNOAe0
- Outcome
- optimum N dressing ratee0
- Direction
- decreasede0
- Qualifier
- low base-tiller N dressing levele0
- Comparator
- standard methode0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with the standard method, under the low base-tiller N dressing level, the optimum N dressing rate was decreased, and the economic benefit was increased by adapting the N dressing methods of CSNOA and SSNM”
t0“Rice”
e1“leaf area index (LAI), site-specific N management (SSNM), N nutrition index (NNI), and N fertilizer optimization algorithm (NFOA)”
Claim · model-written summary
At low base-tiller nitrogen, SSNM reduced the optimum dressing rate relative to the standard method.
- Taxon
- riceOryza sativat0
- Treatment
- SSNMe0
- Outcome
- optimum N dressing ratee0
- Direction
- decreasede0
- Qualifier
- low base-tiller N dressing levele0
- Comparator
- standard methode0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with the standard method, under the low base-tiller N dressing level, the optimum N dressing rate was decreased, and the economic benefit was increased by adapting the N dressing methods of CSNOA and SSNM”
t0“Rice”
e1“leaf area index (LAI), site-specific N management (SSNM), N nutrition index (NNI), and N fertilizer optimization algorithm (NFOA)”
Claim · model-written summary
At low base-tiller nitrogen, CSNOA increased economic benefit relative to the standard method.
- Taxon
- riceOryza sativat0
- Treatment
- CSNOAe0
- Outcome
- economic benefite0
- Direction
- increasede0
- Comparator
- standard methode0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with the standard method, under the low base-tiller N dressing level, the optimum N dressing rate was decreased, and the economic benefit was increased by adapting the N dressing methods of CSNOA and SSNM”
t0“Rice”
e1“leaf area index (LAI), site-specific N management (SSNM), N nutrition index (NNI), and N fertilizer optimization algorithm (NFOA)”
Claim · model-written summary
At low base-tiller nitrogen, SSNM increased economic benefit relative to the standard method.
- Taxon
- riceOryza sativat0
- Treatment
- SSNMe0
- Outcome
- economic benefite0
- Direction
- increasede0
- Comparator
- standard methode0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with the standard method, under the low base-tiller N dressing level, the optimum N dressing rate was decreased, and the economic benefit was increased by adapting the N dressing methods of CSNOA and SSNM”
t0“Rice”
e1“leaf area index (LAI), site-specific N management (SSNM), N nutrition index (NNI), and N fertilizer optimization algorithm (NFOA)”
Claim · model-written summary
At low base-tiller nitrogen, LAI increased optimum dressing rate and decreased economic benefit.
- Taxon
- riceOryza sativat0
- Treatment
- LAIe1
- Outcome
- optimum N dressing ratee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the optimum N dressing rate was increased, and the economic benefit was decreased by the other three N dressing methods”
t0“Rice”
e1“leaf area index (LAI), site-specific N management (SSNM), N nutrition index (NNI), and N fertilizer optimization algorithm (NFOA)”
Claim · model-written summary
At low base-tiller nitrogen, NNI increased optimum dressing rate.
- Taxon
- riceOryza sativat0
- Treatment
- NNIe1
- Outcome
- optimum N dressing ratee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the optimum N dressing rate was increased, and the economic benefit was decreased by the other three N dressing methods”
t0“Rice”
e1“leaf area index (LAI), site-specific N management (SSNM), N nutrition index (NNI), and N fertilizer optimization algorithm (NFOA)”
Claim · model-written summary
At low base-tiller nitrogen, NFOA increased optimum dressing rate.
- Taxon
- riceOryza sativat0
- Treatment
- NFOAe1
- Outcome
- optimum N dressing ratee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the optimum N dressing rate was increased, and the economic benefit was decreased by the other three N dressing methods”
t0“Rice”
e1“leaf area index (LAI), site-specific N management (SSNM), N nutrition index (NNI), and N fertilizer optimization algorithm (NFOA)”
Claim · model-written summary
At low base-tiller nitrogen, LAI decreased economic benefit.
- Taxon
- riceOryza sativat0
- Treatment
- LAIe1
- Outcome
- economic benefite0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the optimum N dressing rate was increased, and the economic benefit was decreased by the other three N dressing methods”
t0“Rice”
e1“leaf area index (LAI), site-specific N management (SSNM), N nutrition index (NNI), and N fertilizer optimization algorithm (NFOA)”
Claim · model-written summary
At low base-tiller nitrogen, NNI decreased economic benefit.
- Taxon
- riceOryza sativat0
- Treatment
- NNIe1
- Outcome
- economic benefite0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the optimum N dressing rate was increased, and the economic benefit was decreased by the other three N dressing methods”
t0“Rice”
e1“leaf area index (LAI), site-specific N management (SSNM), N nutrition index (NNI), and N fertilizer optimization algorithm (NFOA)”
Claim · model-written summary
At low base-tiller nitrogen, NFOA decreased economic benefit.
- Taxon
- riceOryza sativat0
- Treatment
- NFOAe1
- Outcome
- economic benefite0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the optimum N dressing rate was increased, and the economic benefit was decreased by the other three N dressing methods”
t0“Rice”
e1“leaf area index (LAI), site-specific N management (SSNM), N nutrition index (NNI), and N fertilizer optimization algorithm (NFOA)”
Claim · model-written summary
At general base-tiller nitrogen, methods other than NFOA increased optimum nitrogen rate, nitrogen use efficiency and economic benefit.
- Taxon
- riceOryza sativat0
- Treatment
- all N dressing methods except the NFOAe0
- Outcome
- optimum N rate, N-use efficiency and economic benefite0
- Direction
- increasede0
- Qualifier
- general base-tiller N dressing levele0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under the general base-tiller N dressing level, the optimum N rate, N-use efficiency and economic benefit were increased by all N dressing methods except the NFOA”
t0“Rice”
e1“leaf area index (LAI), site-specific N management (SSNM), N nutrition index (NNI), and N fertilizer optimization algorithm (NFOA)”
Claim · model-written summary
The authors identify CSNOA and SSNM as applicable techniques for rice nitrogen dressing across base-tiller levels.
- Taxon
- riceOryza sativae0
- Outcome
- good techniques for quantifying N dressinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the CSNOA and SSNM were two good techniques for quantifying N dressing in rice, with higher economic benefit, less N input, and better applicability under different base-tiller N dressing levels”
The same questions in other papers
climate site · yield · Oryza sativa (rice)Positive and negative results
109 papers in the same direction as this paper · 59 in the opposite direction · 3 reporting no difference from an alternative
- positive
- negative
- negative
168 papers more in this group
See all 172 papers →nitrogen · yield · Oryza sativa (rice)Positive and negative results
1,802 papers in the same direction as this paper · 193 in the opposite direction · 49 reporting no difference from an alternative
- positive
- positive
- positive
2,041 papers more in this group
See all 2,045 papers →fertilization · yield · Oryza sativa (rice)Positive and negative results
3,182 papers in the same direction as this paper · 207 in the opposite direction · 65 reporting no difference from an alternative
- no effect
- positive
- positive
3,451 papers more in this group
See all 3,455 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.