Abstract
Split-plot design was used in this experiment to study the effect of irrigation method and nitrogen amount on the cumulative and operation of dry matter. The results showed that the impacts of irrigation method and nitrogen amount on dry matter cumulative amount,output rate and conversion rate of stem and sheath matter in the main growth periods,from heading date to maturity were significant and the interaction effect was significant. Light wet and dry alternating irrigation method combined with the right amount of nitrogen fertilizer could significantly increase the amount of dry matter accumulation,output rate and conversion rate of stem and sheath matter from heading date to maturity. In moderate and heavy wet and dry alternating way,increasing the amount of nitrogen amount could increase dry matter accumulation,but wasn't conducive to the dry matter cumulative and conversion of stem and sheath in heading date to maturity. Reducing nitrogen amount could reduce the negative effects of water stress on dry matter accumulation and water control negative coupling effect. Therefore,150 ~ 225 kg · hm-2nitrogen combined with light wet and dry alternating irrigation methods was the optimal water and nitrogen coupling under the test condition. While under moderate and heavy wet and dry alternating way,nitrogen amount should be reduced to 75 ~ 150 kg · hm-2to weaken the negative effects and water control coupling effects.
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Claims 10
Claim · model-written summary
Irrigation and nitrogen had significant effects on dry matter accumulation, stem and sheath output rate, and conversion rate, including a significant interaction.
- Taxon
- japonica rice
_by_Augustus_Binu.jpg?width=60)
Oryza sativa Japonica Groupt0 - Organ / stage
- stem and sheathe0
- Treatment
- irrigation method and nitrogen amounte0
- Outcome
- dry matter cumulative amount,output rate and conversion rate of stem and sheath mattere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_by_Augustus_Binu.jpg?width=500)
Verbatim
t0“japonica rice”
e0“the impacts of irrigation method and nitrogen amount on dry matter cumulative amount,output rate and conversion rate of stem and sheath matter in the main growth periods,from heading date to maturity were significant and the interaction effect was significant”
Claim · model-written summary
Light wet and dry alternating irrigation with suitable nitrogen significantly increased dry matter accumulation from heading to maturity.
- Taxon
- japonica riceOryza sativa Japonica Groupt0
- Organ / stage
- heading date to maturitye0
- Treatment
- Light wet and dry alternating irrigation method combined with the right amount of nitrogen fertilizere0
- Outcome
- amount of dry matter accumulatione0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“japonica rice”
e0“Light wet and dry alternating irrigation method combined with the right amount of nitrogen fertilizer could significantly increase the amount of dry matter accumulation,output rate and conversion rate of stem and sheath matter from heading date to maturity.”
Claim · model-written summary
Light wet and dry alternating irrigation with suitable nitrogen significantly increased stem and sheath matter output rate.
- Taxon
- japonica riceOryza sativa Japonica Groupt0
- Organ / stage
- stem and sheath mattere0
- Treatment
- Light wet and dry alternating irrigation method combined with the right amount of nitrogen fertilizere0
- Outcome
- output ratee0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“japonica rice”
e0“Light wet and dry alternating irrigation method combined with the right amount of nitrogen fertilizer could significantly increase the amount of dry matter accumulation,output rate and conversion rate of stem and sheath matter from heading date to maturity.”
Claim · model-written summary
Light wet and dry alternating irrigation with suitable nitrogen significantly increased stem and sheath matter conversion rate.
- Taxon
- japonica riceOryza sativa Japonica Groupt0
- Treatment
- Light wet and dry alternating irrigation method combined with the right amount of nitrogen fertilizere0
- Outcome
- conversion rate of stem and sheath mattere0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“japonica rice”
e0“Light wet and dry alternating irrigation method combined with the right amount of nitrogen fertilizer could significantly increase the amount of dry matter accumulation,output rate and conversion rate of stem and sheath matter from heading date to maturity.”
Claim · model-written summary
Under moderate and heavy wet and dry irrigation, more nitrogen increased dry matter accumulation.
- Taxon
- japonica riceOryza sativa Japonica Groupt0
- Treatment
- increasing the amount of nitrogen amounte0
- Outcome
- dry matter accumulatione0
- Direction
- increasee0
- Qualifier
- moderate and heavy wet and dry alternating waye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“japonica rice”
e0“In moderate and heavy wet and dry alternating way,increasing the amount of nitrogen amount could increase dry matter accumulation,but wasn't conducive to the dry matter cumulative and conversion of stem and sheath in heading date to maturity.”
Claim · model-written summary
Under moderate and heavy wet and dry irrigation, more nitrogen was unfavorable for stem and sheath dry matter accumulation and conversion.
- Taxon
- japonica riceOryza sativa Japonica Groupt0
- Treatment
- increasing the amount of nitrogen amounte0
- Outcome
- dry matter cumulative and conversion of stem and sheathe0
- Direction
- wasn't conducivee0
- Qualifier
- moderate and heavy wet and dry alternating waye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“japonica rice”
e0“In moderate and heavy wet and dry alternating way,increasing the amount of nitrogen amount could increase dry matter accumulation,but wasn't conducive to the dry matter cumulative and conversion of stem and sheath in heading date to maturity.”
Claim · model-written summary
Reducing nitrogen reduced the negative effects of water stress on dry matter accumulation.
- Taxon
- japonica riceOryza sativa Japonica Groupt0
- Treatment
- Reducing nitrogen amounte0
- Outcome
- negative effects of water stress on dry matter accumulatione0
- Direction
- reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“japonica rice”
e0“Reducing nitrogen amount could reduce the negative effects of water stress on dry matter accumulation and water control negative coupling effect.”
Claim · model-written summary
Reducing nitrogen reduced the negative water-control coupling effect.
- Taxon
- japonica riceOryza sativa Japonica Groupt0
- Treatment
- Reducing nitrogen amounte0
- Outcome
- water control negative coupling effecte0
- Direction
- reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“japonica rice”
e0“Reducing nitrogen amount could reduce the negative effects of water stress on dry matter accumulation and water control negative coupling effect.”
Claim · model-written summary
The authors recommend 150–225 kg per hectare nitrogen with light wet and dry alternating irrigation under the test conditions.
- Taxon
- japonica riceOryza sativa Japonica Groupt0
- Treatment
- 150 ~ 225 kg · hm-2nitrogen combined with light wet and dry alternating irrigation methodse0
- Outcome
- optimal water and nitrogen couplinge0
- Qualifier
- under the test conditione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“japonica rice”
e0“150 ~ 225 kg · hm-2nitrogen combined with light wet and dry alternating irrigation methods was the optimal water and nitrogen coupling under the test condition”
Claim · model-written summary
The authors recommend reducing nitrogen to 75–150 kg per hectare under moderate and heavy wet and dry irrigation.
- Taxon
- japonica riceOryza sativa Japonica Groupt0
- Outcome
- nitrogen amount should be reduced to 75 ~ 150 kg · hm-2e0
- Qualifier
- under moderate and heavy wet and dry alternating waye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“japonica rice”
e0“under moderate and heavy wet and dry alternating way,nitrogen amount should be reduced to 75 ~ 150 kg · hm-2to weaken the negative effects and water control coupling effects”
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