Abstract
Cadmium pollution of rice is a big problem in agricultural food safety. The accident "Cd rice" occurred last year in Youxian County, Hunan Province caused serious social panic. In this study, trials on "Cd rice" controlling techniques specific to the Cd pollution in paddy soil in Youxian were investigated. It was suggested that the average Cd contents in rice grains of the rice variety "Zhu Liang You 06" in Datongqiao and Wangling were 0.167 and 0.127 mg x kg(-1), respectively, which were only equal to 20% of the contents of other varieties. The trials for stabilizing agents revealed that treatments of lime and mineral fertilizer decreased Cd contents in rice grains to 20-30% of the control. Plastic film-mulched treatment decreased the rice grain Cd to 50%. And combined treatment of plastic film-mulched and biochar and silicon foliar-fertilizer decreased 80% of rice Cd content. Single treatments of silicon foliar-fertilizer and combined treatment of silicon foliar-fertilizer and topdressing fertilizer decreased more than 90% of Cd content. Results of BCR revealed that the percentage of cationic exchangeable and/or carbonate associated Cd fraction was more than 55% for most of the soil samples. Lime treatment significantly decreased the percentage of cationic exchangeable and/or carbonate and oxides of Fe and Mn associated Cd and increased the crystalline structure of clay minerals associated Cd. The change rate reached about 20%. Our results suggested concentration of soil Cd and pH were the two significant factors impacting the uptake of Cd by rice grains.
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Claims 14
Claim · model-written summary
Zhu Liang You 06 grain Cd in Datongqiao averaged 0.167 mg x kg(-1), about 20% of other varieties.
- Taxon
- rice
Oryza sativat0 - Material
- Zhu Liang You 06e0
- Outcome
- Cd contents in rice grainse0
- Direction
- only equal to 20%e0
- Value
- 0.167e0
- Comparator
- other varietiese0
- Setting
- Datongqiaoe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the average Cd contents in rice grains of the rice variety "Zhu Liang You 06" in Datongqiao and Wangling were 0.167 and 0.127 mg x kg(-1), respectively, which were only equal to 20% of the contents of other varieties.”
t0“Rice Cultivar”
Claim · model-written summary
Zhu Liang You 06 grain Cd in Wangling averaged 0.127 mg x kg(-1), about 20% of other varieties.
- Taxon
- riceOryza sativat0
- Material
- Zhu Liang You 06e0
- Outcome
- Cd contents in rice grainse0
- Direction
- only equal to 20%e0
- Value
- 0.127 mg x kg(-1)e0
- Comparator
- other varietiese0
- Setting
- Wanglinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the average Cd contents in rice grains of the rice variety "Zhu Liang You 06" in Datongqiao and Wangling were 0.167 and 0.127 mg x kg(-1), respectively, which were only equal to 20% of the contents of other varieties.”
t0“Rice Cultivar”
Claim · model-written summary
lime reduced rice grain Cd content by or to 20-30%.
- Taxon
- riceOryza sativat0
- Treatment
- limee0
- Outcome
- Cd contents in rice grainse0
- Direction
- decreasede0
- Value
- 20-30%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“treatments of lime and mineral fertilizer decreased Cd contents in rice grains to 20-30% of the control.”
t0“Rice Cultivar”
Claim · model-written summary
mineral fertilizer reduced rice grain Cd content by or to 20-30%.
- Taxon
- riceOryza sativat0
- Treatment
- mineral fertilizere0
- Outcome
- Cd contents in rice grainse0
- Direction
- decreasede0
- Value
- 20-30%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“treatments of lime and mineral fertilizer decreased Cd contents in rice grains to 20-30% of the control.”
t0“Rice Cultivar”
Claim · model-written summary
Plastic film-mulched treatment reduced rice grain Cd content by or to 50%.
- Taxon
- riceOryza sativat0
- Treatment
- Plastic film-mulched treatmente0
- Outcome
- rice grain Cde0
- Direction
- decreasede0
- Value
- 50%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plastic film-mulched treatment decreased the rice grain Cd to 50%.”
t0“Rice Cultivar”
Claim · model-written summary
combined treatment of plastic film-mulched and biochar and silicon foliar-fertilizer reduced rice grain Cd content by or to 80%.
- Taxon
- riceOryza sativat0
- Treatment
- combined treatment of plastic film-mulched and biochar and silicon foliar-fertilizere0
- Outcome
- rice Cd contente0
- Direction
- decreasede0
- Value
- 80%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“And combined treatment of plastic film-mulched and biochar and silicon foliar-fertilizer decreased 80% of rice Cd content.”
t0“Rice Cultivar”
Claim · model-written summary
silicon foliar-fertilizer reduced rice grain Cd content by or to more than 90%.
- Taxon
- riceOryza sativat0
- Treatment
- silicon foliar-fertilizere0
- Outcome
- Cd contente0
- Direction
- decreasede0
- Value
- more than 90%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Single treatments of silicon foliar-fertilizer and combined treatment of silicon foliar-fertilizer and topdressing fertilizer decreased more than 90% of Cd content.”
t0“Rice Cultivar”
Claim · model-written summary
combined treatment of silicon foliar-fertilizer and topdressing fertilizer reduced rice grain Cd content by or to more than 90%.
- Taxon
- riceOryza sativat0
- Treatment
- combined treatment of silicon foliar-fertilizer and topdressing fertilizere0
- Outcome
- Cd contente0
- Direction
- decreasede0
- Value
- more than 90%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Single treatments of silicon foliar-fertilizer and combined treatment of silicon foliar-fertilizer and topdressing fertilizer decreased more than 90% of Cd content.”
t0“Rice Cultivar”
Claim · model-written summary
Exchangeable or carbonate-associated Cd exceeded 55% in most soil samples.
- Taxon
- riceOryza sativat0
- Outcome
- cationic exchangeable and/or carbonate associated Cd fractione0
- Direction
- more thane0
- Value
- 55%e0
- Qualifier
- most of the soil samplese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the percentage of cationic exchangeable and/or carbonate associated Cd fraction was more than 55% for most of the soil samples.”
t0“Rice Cultivar”
Claim · model-written summary
Lime significantly lowered exchangeable or carbonate-associated soil Cd fraction.
- Taxon
- riceOryza sativat0
- Treatment
- Lime treatmente0
- Outcome
- cationic exchangeable and/or carbonatee0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lime treatment significantly decreased the percentage of cationic exchangeable and/or carbonate and oxides of Fe and Mn associated Cd and increased the crystalline structure of clay minerals associated Cd.”
t0“Rice Cultivar”
Claim · model-written summary
Lime significantly lowered Fe- and Mn-oxide-associated soil Cd fraction.
- Taxon
- riceOryza sativat0
- Treatment
- Lime treatmente0
- Outcome
- oxides of Fe and Mn associated Cde0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lime treatment significantly decreased the percentage of cationic exchangeable and/or carbonate and oxides of Fe and Mn associated Cd and increased the crystalline structure of clay minerals associated Cd.”
t0“Rice Cultivar”
Claim · model-written summary
Lime increased crystalline-clay-associated soil Cd.
- Taxon
- riceOryza sativat0
- Treatment
- Lime treatmente0
- Outcome
- crystalline structure of clay minerals associated Cde0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lime treatment significantly decreased the percentage of cationic exchangeable and/or carbonate and oxides of Fe and Mn associated Cd and increased the crystalline structure of clay minerals associated Cd.”
t0“Rice Cultivar”
Claim · model-written summary
Soil Cd concentration significantly influenced rice grain Cd uptake.
- Taxon
- riceOryza sativat0
- Compound
- soil Cde0
- Outcome
- uptake of Cd by rice grainse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Our results suggested concentration of soil Cd and pH were the two significant factors impacting the uptake of Cd by rice grains.”
t0“Rice Cultivar”
Claim · model-written summary
Soil pH significantly influenced rice grain Cd uptake.
- Taxon
- riceOryza sativat0
- Outcome
- uptake of Cd by rice grainse0
- Qualifier
- pHe0
- Setting
- soile0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Our results suggested concentration of soil Cd and pH were the two significant factors impacting the uptake of Cd by rice grains.”
t0“Rice Cultivar”
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See all 8 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.