Abstract
Hydroponic experiments were conducted to study the effects of different ratios of NH+4 to NO-3(NH+4:NO-3 as 100:0,75:25 and 0:100)on N uptake and root morphology in rice(Oryza sativa L.)at the seedling stage.The results obtained were as follows:Higher biomass and N accumulation were found in the mixed solution of NH+4 and NO-3 while no difference was found between sole NH+4 and NO-3 solution.Amino acid content in the mixed solution of NH+4 and NO-3 was the highest and that in sole NO-3 solution was the lowest.Nitrate content in sole NO-3 solution was four times of that under two ratios of NH+4 to NO-3(100:0 and 75:25).And mixed NH+4 and NO-3 solution increased NO-3 content by 18% compared to sole NH+4 solution.From 0 to 5 d,total root length was similar to that under two ratios of NH+4 to NO-3(75:25 and 0:100),which was higher than that in sole NH+4 supply.After 5 d,total root length markedly increased under two ratios of NH+4 to NO-3(100:0 and 75:25).Mixed NH+4 and NO-3 solution increased total root length by 35% compared with sole NH+4 and NO-3supply while there no obvious difference between sole NH+4 and NO-3 supply.The change of total root length was mainly resulted from total lateral root length which was affected by lateral root initialing.
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Claims 13
Claim · model-written summary
Mixed ammonium and nitrate produced higher biomass than single nitrogen forms.
- Taxon
- rice
Oryza sativae1 - Treatment
- mixed solution of NH+4 and NO-3e0
- Outcome
- biomasse0
- Direction
- Highere0
- Comparator
- sole NH+4 and NO-3 solutione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher biomass and N accumulation were found in the mixed solution of NH+4 and NO-3 while no difference was found between sole NH+4 and NO-3 solution”
e1“in rice(Oryza sativa L.)”
Claim · model-written summary
Mixed ammonium and nitrate produced higher nitrogen accumulation than single nitrogen forms.
- Taxon
- riceOryza sativae1
- Treatment
- mixed solution of NH+4 and NO-3e0
- Outcome
- N accumulatione0
- Direction
- Highere0
- Comparator
- sole NH+4 and NO-3 solutione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher biomass and N accumulation were found in the mixed solution of NH+4 and NO-3 while no difference was found between sole NH+4 and NO-3 solution”
e1“in rice(Oryza sativa L.)”
Claim · model-written summary
Ammonium-only and nitrate-only solutions did not differ in biomass or nitrogen accumulation.
- Taxon
- riceOryza sativae1
- Treatment
- sole NH+4e0
- Outcome
- biomass and N accumulatione0
- Direction
- no differencee0
- Comparator
- NO-3 solutione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher biomass and N accumulation were found in the mixed solution of NH+4 and NO-3 while no difference was found between sole NH+4 and NO-3 solution”
e1“in rice(Oryza sativa L.)”
Claim · model-written summary
The mixed solution had the highest amino acid content.
- Taxon
- riceOryza sativae1
- Treatment
- mixed solution of NH+4 and NO-3e0
- Outcome
- Amino acid contente0
- Direction
- higheste0
- Comparator
- sole NO-3 solutione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Amino acid content in the mixed solution of NH+4 and NO-3 was the highest and that in sole NO-3 solution was the lowest”
e1“in rice(Oryza sativa L.)”
Claim · model-written summary
Nitrate-only solution had the lowest amino acid content.
- Taxon
- riceOryza sativae1
- Treatment
- sole NO-3 solutione0
- Outcome
- Amino acid contente0
- Direction
- loweste0
- Comparator
- mixed solution of NH+4 and NO-3e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Amino acid content in the mixed solution of NH+4 and NO-3 was the highest and that in sole NO-3 solution was the lowest”
e1“in rice(Oryza sativa L.)”
Claim · model-written summary
Nitrate-only solution produced four times the nitrate content of the other two ratios.
- Taxon
- riceOryza sativae1
- Treatment
- sole NO-3 solutione0
- Outcome
- Nitrate contente0
- Direction
- four timese0
- Value
- four timese0
- Comparator
- two ratios of NH+4 to NO-3(100:0 and 75:25)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrate content in sole NO-3 solution was four times of that under two ratios of NH+4 to NO-3(100:0 and 75:25)”
e1“in rice(Oryza sativa L.)”
Claim · model-written summary
Mixed nitrogen solution increased nitrate content by 18% over ammonium-only solution.
- Taxon
- riceOryza sativae1
- Treatment
- mixed NH+4 and NO-3 solutione0
- Outcome
- NO-3 contente0
- Direction
- increasede0
- Value
- 18%e0
- Comparator
- sole NH+4 solutione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mixed NH+4 and NO-3 solution increased NO-3 content by 18% compared to sole NH+4 solution”
e1“in rice(Oryza sativa L.)”
Claim · model-written summary
During days 0–5, mixed and nitrate-only ratios had similar total root lengths.
- Taxon
- riceOryza sativae1
- Treatment
- NH+4 to NO-3(75:25 and 0:100)e0
- Outcome
- total root lengthe0
- Direction
- similare0
- Qualifier
- From 0 to 5 de0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“From 0 to 5 d,total root length was similar to that under two ratios of NH+4 to NO-3(75:25 and 0:100)”
e1“in rice(Oryza sativa L.)”
Claim · model-written summary
During days 0–5, mixed and nitrate-only ratios gave longer total roots than ammonium alone.
- Taxon
- riceOryza sativae1
- Treatment
- NH+4 to NO-3(75:25 and 0:100)e0
- Outcome
- total root lengthe0
- Direction
- highere0
- Comparator
- sole NH+4 supplye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“From 0 to 5 d,total root length was similar to that under two ratios of NH+4 to NO-3(75:25 and 0:100),which was higher than that in sole NH+4 supply”
e1“in rice(Oryza sativa L.)”
Claim · model-written summary
After day 5, total root length increased under ammonium-only and mixed ratios.
- Taxon
- riceOryza sativae1
- Treatment
- NH+4 to NO-3(100:0 and 75:25)e0
- Outcome
- total root lengthe0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After 5 d,total root length markedly increased under two ratios of NH+4 to NO-3(100:0 and 75:25)”
e1“in rice(Oryza sativa L.)”
Claim · model-written summary
Mixed nitrogen increased total root length 35% over either sole nitrogen form.
- Taxon
- riceOryza sativae1
- Treatment
- Mixed NH+4 and NO-3 solutione0
- Outcome
- total root lengthe0
- Direction
- increasede0
- Value
- 35%e0
- Comparator
- sole NH+4 and NO-3supplye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mixed NH+4 and NO-3 solution increased total root length by 35% compared with sole NH+4 and NO-3supply”
e1“in rice(Oryza sativa L.)”
Claim · model-written summary
Total root length did not obviously differ between sole ammonium and sole nitrate.
- Taxon
- riceOryza sativae2
- Treatment
- sole NH+4e0
- Outcome
- total root lengthe1
- Direction
- no obvious differencee0
- Comparator
- NO-3 supplye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there no obvious difference between sole NH+4 and NO-3 supply”
e1“Mixed NH+4 and NO-3 solution increased total root length”
e2“in rice(Oryza sativa L.)”
Claim · model-written summary
Total root length changes mainly arose from lateral root length affected by lateral root initiation.
- Taxon
- riceOryza sativae1
- Organ / stage
- total lateral root lengthe0
- Outcome
- change of total root lengthe0
- Qualifier
- lateral root initialinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The change of total root length was mainly resulted from total lateral root length which was affected by lateral root initialing”
e1“in rice(Oryza sativa L.)”
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See all 11 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.