Abstract
Rice straw return plays an important role in sustainable agricultural development, but the impact of rice straw return on rice growth remains inconclusive. In this experiment, we employed a combination of soil and water cultivation experiments to investigate the impact of rice straw return on seedling growth of rice in Northeast China. This study demonstrated that rice straw return inhibited rice plant growth within 37 days but was no longer significant after 37 days. Rice straw return resulted in an increase in iron(II) (Fe2+) concentration of soil solution. The hydroponic test demonstrated that a high concentration of Fe2+ significantly increased the uptake of Fe, reduced the H2O2 content in root, facilitated the formation of root iron plaque, and inhibited the dry weight at the rice seedling stage, in comparison to a nutrient solution with a normal Fe2+ concentration. The increased Fe2+ concentration of soil solution under rice straw return may be a significant factor in the inhibition of rice seedling growth. Moreover, in field management, this study also linked the amount of rice straw returned and soil solution Fe2+ to provide a clear quantitative guide without affecting plant growth.
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Claims 9
Claim · model-written summary
Rice straw return inhibited rice growth within 37 days.
- Taxon
- rice
Oryza sativae0 - Treatment
- rice straw returne0
- Outcome
- rice plant growthe0
- Direction
- inhibitede0
- Qualifier
- within 37 dayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This study demonstrated that rice straw return inhibited rice plant growth within 37 days but was no longer significant after 37 days.”
Claim · model-written summary
The growth effect of rice straw return was no longer significant after 37 days.
- Taxon
- riceOryza sativae0
- Treatment
- rice straw returne0
- Outcome
- rice plant growthe0
- Qualifier
- after 37 dayse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This study demonstrated that rice straw return inhibited rice plant growth within 37 days but was no longer significant after 37 days.”
Claim · model-written summary
Rice straw return increased Fe2+ concentration in soil solution.
- Taxon
- riceOryza sativat0
- Treatment
- Rice straw returne0
- Outcome
- iron(II) (Fe2+) concentration of soil solutione0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rice straw return resulted in an increase in iron(II) (Fe2+) concentration of soil solution.”
t0“Seedling Growth of Rice”
Claim · model-written summary
High Fe2+ significantly increased rice Fe uptake.
- Taxon
- riceOryza sativat0
- Treatment
- a high concentration of Fe2+e0
- Outcome
- uptake of Fee0
- Direction
- increasede0
- Comparator
- a nutrient solution with a normal Fe2+ concentratione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The hydroponic test demonstrated that a high concentration of Fe2+ significantly increased the uptake of Fe, reduced the H2O2 content in root, facilitated the formation of root iron plaque, and inhibited the dry weight at the rice seedling stage, in comparison to a nutrient solution with a normal Fe2+ concentration.”
t0“Seedling Growth of Rice”
Claim · model-written summary
High Fe2+ reduced root H2O2 content.
- Taxon
- riceOryza sativat0
- Organ / stage
- roote0
- Treatment
- a high concentration of Fe2+e0
- Outcome
- H2O2 content in roote0
- Direction
- reducede0
- Comparator
- a nutrient solution with a normal Fe2+ concentratione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The hydroponic test demonstrated that a high concentration of Fe2+ significantly increased the uptake of Fe, reduced the H2O2 content in root, facilitated the formation of root iron plaque, and inhibited the dry weight at the rice seedling stage, in comparison to a nutrient solution with a normal Fe2+ concentration.”
t0“Seedling Growth of Rice”
Claim · model-written summary
High Fe2+ facilitated root iron plaque formation.
- Taxon
- riceOryza sativat0
- Treatment
- a high concentration of Fe2+e0
- Outcome
- formation of root iron plaquee0
- Direction
- facilitatede0
- Comparator
- a nutrient solution with a normal Fe2+ concentratione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The hydroponic test demonstrated that a high concentration of Fe2+ significantly increased the uptake of Fe, reduced the H2O2 content in root, facilitated the formation of root iron plaque, and inhibited the dry weight at the rice seedling stage, in comparison to a nutrient solution with a normal Fe2+ concentration.”
t0“Seedling Growth of Rice”
Claim · model-written summary
High Fe2+ inhibited rice seedling dry weight.
- Taxon
- riceOryza sativat0
- Organ / stage
- rice seedling stagee0
- Treatment
- a high concentration of Fe2+e0
- Outcome
- dry weighte0
- Direction
- inhibitede0
- Comparator
- a nutrient solution with a normal Fe2+ concentratione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The hydroponic test demonstrated that a high concentration of Fe2+ significantly increased the uptake of Fe, reduced the H2O2 content in root, facilitated the formation of root iron plaque, and inhibited the dry weight at the rice seedling stage, in comparison to a nutrient solution with a normal Fe2+ concentration.”
t0“Seedling Growth of Rice”
Claim · model-written summary
The authors propose soil Fe2+ increase as a factor in straw-return inhibition of seedling growth.
- Taxon
- riceOryza sativae0
- Treatment
- rice straw returne0
- Compound
- Fe2+e0
- Outcome
- inhibition of rice seedling growthe0
- Qualifier
- may be a significant factore0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The increased Fe2+ concentration of soil solution under rice straw return may be a significant factor in the inhibition of rice seedling growth.”
Claim · model-written summary
The authors link straw-return amount and soil Fe2+ to a growth-preserving field management guide.
- Taxon
- riceOryza sativat0
- Treatment
- amount of rice straw returnede0
- Outcome
- a clear quantitative guide without affecting plant growthe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Moreover, in field management, this study also linked the amount of rice straw returned and soil solution Fe2+ to provide a clear quantitative guide without affecting plant growth.”
t0“Seedling Growth of Rice”
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