Abstract
Hybrid rice Eryou 498 was used to investigate the effects of nitrogen(N) fertilizer management on leaf area,photosynthetic rate in productive phase,and also dry-matter accumulation and its transportation in triangle-planted system of rice intensification(TSRI) with appropriate seedling age and density.At the same time,the effects of dry-matter accumulation before anthesis and its transportation and dry-matter accumulation after anthesis on yield formation were also explored a N fertilizer management which could both increase yield and reduce the N waste.The results showed that in TSRI N fertilizer management had significant effects on leaf area index(LAI) and photosynthetic rate except the LAI in waxy ripening stage;with the increase of N rate and postponing N application,net photosynthetic rate in flag leaf in full heading stage and waxy ripe stage increased significantly;LAI in productive phase exhibited a parabola mostly with the increase of N rate and postponing N application.In TSRI,N rate and ratio of application both enlarged total glumes to increase yield.At the same time,N rate enlarged 1000-grain weight and ratio of application improved seed-setting rate to increase yield respectively.In TSRI,dry-matter accumulation before anthesis,dry-matter of transportation,and transportation rate of dry-matter had significantly positive correlation with yield respectively.The treatment which N rate was 150 kg ha-1 and panicle fertilizer was 30% of the whole N fertilizer enlarged dry-matter accumulation before anthesis and dry-matter of transportation significantly to reach maximum yield.It also improved N agronomy efficiency and N physiology efficiency significantly,so it was the best combination which could both increase yield and reduce the waste of N fertilizer to the maximum degree.
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Claims 16
Claim · model-written summary
Nitrogen management significantly affected leaf area index except at waxy ripening.
- Taxon
- rice
Oryza sativat0 - Treatment
- N fertilizer managemente0
- Outcome
- leaf area index(LAI)e0
- Qualifier
- except the LAI in waxy ripening stagee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N fertilizer management had significant effects on leaf area index(LAI) and photosynthetic rate except the LAI in waxy ripening stage”
t0“Rice”
Claim · model-written summary
Nitrogen management significantly affected photosynthetic rate.
- Taxon
- riceOryza sativat0
- Treatment
- N fertilizer managemente0
- Outcome
- photosynthetic ratee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N fertilizer management had significant effects on leaf area index(LAI) and photosynthetic rate except the LAI in waxy ripening stage”
t0“Rice”
Claim · model-written summary
Increasing nitrogen rate and postponing application significantly increased flag-leaf photosynthesis at heading and waxy ripening.
- Taxon
- riceOryza sativat0
- Organ / stage
- flag leaf in full heading stage and waxy ripe stagee0
- Treatment
- increase of N rate and postponing N applicatione0
- Outcome
- net photosynthetic ratee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with the increase of N rate and postponing N application,net photosynthetic rate in flag leaf in full heading stage and waxy ripe stage increased significantly”
t0“Rice”
Claim · model-written summary
Leaf area index showed a mostly parabolic response to nitrogen rate and timing.
- Taxon
- riceOryza sativat0
- Treatment
- increase of N rate and postponing N applicatione0
- Outcome
- LAI in productive phasee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“LAI in productive phase exhibited a parabola mostly with the increase of N rate and postponing N application”
t0“Rice”
Claim · model-written summary
Nitrogen rate and application ratio increased total glumes and yield.
- Taxon
- riceOryza sativat0
- Treatment
- N rate and ratio of applicatione0
- Outcome
- total glumes to increase yielde0
- Direction
- enlargede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N rate and ratio of application both enlarged total glumes to increase yield”
t0“Rice”
Claim · model-written summary
Higher nitrogen rate increased thousand-grain weight and yield.
- Taxon
- riceOryza sativat0
- Treatment
- N ratee0
- Outcome
- 1000-grain weighte0
- Direction
- enlargede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N rate enlarged 1000-grain weight and ratio of application improved seed-setting rate to increase yield respectively”
t0“Rice”
Claim · model-written summary
Application ratio improved seed-setting rate and yield.
- Taxon
- riceOryza sativat0
- Treatment
- ratio of applicatione0
- Outcome
- seed-setting ratee0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ratio of application improved seed-setting rate to increase yield respectively”
t0“Rice”
Claim · model-written summary
Pre-anthesis dry matter accumulation was positively correlated with yield.
- Taxon
- riceOryza sativat0
- Organ / stage
- before anthesise0
- Outcome
- dry-matter accumulation before anthesise0
- Direction
- positive correlation with yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“dry-matter accumulation before anthesis,dry-matter of transportation,and transportation rate of dry-matter had significantly positive correlation with yield respectively”
t0“Rice”
Claim · model-written summary
Transported dry matter was positively correlated with yield.
- Taxon
- riceOryza sativat0
- Organ / stage
- dry-matter of transportatione0
- Outcome
- dry-matter of transportatione0
- Direction
- positive correlation with yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“dry-matter of transportation,and transportation rate of dry-matter had significantly positive correlation with yield respectively”
t0“Rice”
Claim · model-written summary
Dry matter transport rate was positively correlated with yield.
- Taxon
- riceOryza sativat0
- Organ / stage
- dry-mattere0
- Outcome
- transportation rate of dry-mattere0
- Direction
- positive correlation with yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“transportation rate of dry-matter had significantly positive correlation with yield respectively”
t0“Rice”
Claim · model-written summary
150 kg ha-1 nitrogen with 30% as panicle fertilizer significantly increased pre-anthesis dry matter accumulation.
- Taxon
- riceOryza sativat0
- Treatment
- 150 kg ha-1 and panicle fertilizer was 30% of the whole N fertilizere0
- Outcome
- dry-matter accumulation before anthesise0
- Direction
- enlargede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N rate was 150 kg ha-1 and panicle fertilizer was 30% of the whole N fertilizer enlarged dry-matter accumulation before anthesis and dry-matter of transportation significantly to reach maximum yield”
t0“Rice”
Claim · model-written summary
The same treatment significantly increased transported dry matter.
- Taxon
- riceOryza sativat0
- Treatment
- 150 kg ha-1 and panicle fertilizer was 30% of the whole N fertilizere0
- Outcome
- dry-matter of transportatione0
- Direction
- enlargede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N rate was 150 kg ha-1 and panicle fertilizer was 30% of the whole N fertilizer enlarged dry-matter accumulation before anthesis and dry-matter of transportation significantly to reach maximum yield”
t0“Rice”
Claim · model-written summary
The same treatment achieved maximum yield.
- Taxon
- riceOryza sativat0
- Treatment
- 150 kg ha-1 and panicle fertilizer was 30% of the whole N fertilizere0
- Outcome
- yielde0
- Direction
- maximume0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N rate was 150 kg ha-1 and panicle fertilizer was 30% of the whole N fertilizer enlarged dry-matter accumulation before anthesis and dry-matter of transportation significantly to reach maximum yield”
t0“Rice”
Claim · model-written summary
The treatment significantly improved nitrogen agronomic efficiency.
- Taxon
- riceOryza sativat0
- Treatment
- 150 kg ha-1e0
- Outcome
- N agronomy efficiencye0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The treatment which N rate was 150 kg ha-1 and panicle fertilizer was 30% of the whole N fertilizer enlarged dry-matter accumulation before anthesis and dry-matter of transportation significantly to reach maximum yield.It also improved N agronomy efficiency and N physiology efficiency significantly”
t0“Rice”
Claim · model-written summary
The treatment significantly improved nitrogen physiological efficiency.
- Taxon
- riceOryza sativat0
- Treatment
- 150 kg ha-1e0
- Outcome
- N physiology efficiencye0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The treatment which N rate was 150 kg ha-1 and panicle fertilizer was 30% of the whole N fertilizer enlarged dry-matter accumulation before anthesis and dry-matter of transportation significantly to reach maximum yield.It also improved N agronomy efficiency and N physiology efficiency significantly”
t0“Rice”
Claim · model-written summary
The authors identified the treatment as best for yield and reduced nitrogen waste.
- Taxon
- riceOryza sativat0
- Outcome
- best combination which could both increase yield and reduce the waste of N fertilizer to the maximum degreee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it was the best combination which could both increase yield and reduce the waste of N fertilizer to the maximum degree”
t0“Rice”
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