Abstract
By using nutrient solution culture and simulated water stress by PEG(6000),the effects of different nitrogen forms(NO~-_3-N, NH~+_4-N and the mixture of NO~-_3-N and NH~+_4-N) and water statuses(non-water stress and water stress) on water use efficiency(WUE) and the biological characteristics of rice plants at seedling-tillering stage were studied.The results showed that,under non-water stress,the biomass of rice plants were about 49.63% and 63.25% higher under the supply of mixture of NO~-_3-N and NH~+_4N than either sole supply of NO~-_3-N or NH~+_4-N,respectively.However,under water stress,the biomass of rice plants were about 5.76% and 484.01% higher under sole ammonium supply than the other two treatments,WUE of rice plants were also 11.36% and 81.63% higher than the two treatments,while 12.39% higher than the same nitrogen form supply under non-water stress.Furthermore,rice plants grown with ammonium nutrition showed a stronger tolerance to water stress,due to their higher chlorophyll content,leaves area,tillers,and net photosynthetic rate et al.compared with those grown with nitrate nutrition.
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Claims 6
Claim · model-written summary
Under non-water stress, the biomass of rice supplied with the NO3-N and NH4-N mixture was 49.63% higher than with sole NO3-N
- Taxon
- rice
Oryza sativae1 - Treatment
- supply of mixturee1
- Outcome
- biomasse1
- Direction
- highere1
- Value
- 49.63%e1
- Qualifier
- under non-water stresse1
- Comparator
- sole supply of NO~-_3-Ne1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“under non-water stress,the biomass of rice plants were about 49.63% and 63.25% higher under the supply of mixture of NO~-_3-N and NH~+_4N than either sole supply of NO~-_3-N or NH~+_4-N,respectively”
Claim · model-written summary
Under non-water stress, the biomass of rice supplied with the NO3-N and NH4-N mixture was 63.25% higher than with sole NH4-N
- Taxon
- riceOryza sativae1
- Treatment
- supply of mixturee1
- Outcome
- biomasse1
- Direction
- highere1
- Value
- 63.25%e1
- Qualifier
- under non-water stresse1
- Comparator
- NH~+_4-Ne1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“under non-water stress,the biomass of rice plants were about 49.63% and 63.25% higher under the supply of mixture of NO~-_3-N and NH~+_4N than either sole supply of NO~-_3-N or NH~+_4-N,respectively”
Claim · model-written summary
Under water stress, the biomass of rice under sole ammonium supply was 5.76% and 484.01% higher than under the other two treatments
- Taxon
- riceOryza sativae2
- Treatment
- sole ammonium supplye2
- Outcome
- biomasse2
- Direction
- highere2
- Value
- 5.76% and 484.01%e2
- Qualifier
- under water stresse2
- Comparator
- the other two treatmentse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“However,under water stress,the biomass of rice plants were about 5.76% and 484.01% higher under sole ammonium supply than the other two treatments”
Claim · model-written summary
Under water stress, WUE of rice under sole ammonium supply was 11.36% and 81.63% higher than the two other treatments
- Taxon
- riceOryza sativae3
- Treatment
- sole ammonium supplye2
- Outcome
- WUEe3
- Direction
- highere3
- Value
- 11.36% and 81.63%e3
- Qualifier
- under water stresse2
- Comparator
- the two treatmentse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“However,under water stress,the biomass of rice plants were about 5.76% and 484.01% higher under sole ammonium supply than the other two treatments”
e3“WUE of rice plants were also 11.36% and 81.63% higher than the two treatments”
Claim · model-written summary
Under water stress, WUE of rice under sole ammonium supply was 12.39% higher than the same nitrogen form under non-water stress
- Taxon
- riceOryza sativae3
- Treatment
- water stresse2
- Outcome
- WUEe3
- Direction
- highere4
- Value
- 12.39%e4
- Comparator
- the same nitrogen form supply under non-water stresse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“However,under water stress,the biomass of rice plants were about 5.76% and 484.01% higher under sole ammonium supply than the other two treatments”
e3“WUE of rice plants were also 11.36% and 81.63% higher than the two treatments”
e4“while 12.39% higher than the same nitrogen form supply under non-water stress”
Claim · model-written summary
Ammonium-fed rice had a stronger tolerance to water stress, attributed to higher chlorophyll content, leaf area, tillers and net photosynthetic rate
- Taxon
- riceOryza sativae5
- Treatment
- ammonium nutritione5
- Outcome
- tolerance to water stresse5
- Qualifier
- higher chlorophyll content,leaves area,tillers,and net photosynthetic ratee5
- Comparator
- nitrate nutritione5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“rice plants grown with ammonium nutrition showed a stronger tolerance to water stress,due to their higher chlorophyll content,leaves area,tillers,and net photosynthetic rate et al.compared with those grown with nitrate nutrition”
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