Abstract
In order to investigate the effects of calcium and magnesium rates on the root potassium uptake,effluent and leaves potassium accumulation in flue-cured tobacco,solution culture experiment which included normal level,lower calcium level,high calcium level,lower magnesium level,high magnesium level treatments was conducted.The results showed that,high calcium level and magnesium improved the potassium uptake,effectively reduced the effluent of potassium in the root,increased the net uptake of potassium at late growth stage,effectively regulated the circulation of potassium in whole tobacco plant,and increased the potassium content in flue-cured tobacco leaves.The contents of potassium in upper,middle and lower leaves increased by 0.38,0.41,0.69 percentage points under high calcium treatment;and increased by 0.31,0.42,0.60 percentage points under high magnesium treatment.Under the condition of this study,high calcium and magnesium treatments could increase the root potassium uptake,promote the xylem sap and ploem potassium circulation,reduce the root potassium effluent,enhance the leaves potassium accumulation,increase the potassium content of upper,middle and lower leave.
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Claims 10
Claim · model-written summary
High calcium level and magnesium improved root potassium uptake of flue-cured tobacco in solution culture.
Verbatim
e1“flue-cured tobacco,solution culture experiment which included normal level,lower calcium level,high calcium level,lower magnesium level,high magnesium level treatments was conducted”
e2“high calcium level and magnesium improved the potassium uptake”
Claim · model-written summary
High calcium level and magnesium effectively reduced the efflux of potassium from the root of flue-cured tobacco.
Verbatim
e1“flue-cured tobacco,solution culture experiment which included normal level,lower calcium level,high calcium level,lower magnesium level,high magnesium level treatments was conducted”
e2“high calcium level and magnesium improved the potassium uptake”
e3“effectively reduced the effluent of potassium in the root”
Claim · model-written summary
High calcium level and magnesium increased the net uptake of potassium at the late growth stage of flue-cured tobacco.
Verbatim
e1“flue-cured tobacco,solution culture experiment which included normal level,lower calcium level,high calcium level,lower magnesium level,high magnesium level treatments was conducted”
e2“high calcium level and magnesium improved the potassium uptake”
e3“increased the net uptake of potassium at late growth stage”
Claim · model-written summary
High calcium level and magnesium effectively regulated the circulation of potassium in the whole flue-cured tobacco plant; the direction is not stated.
- Taxon
- flue-cured tobaccoe1
- Treatment
- high calcium level and magnesiume2
- Outcome
- circulation of potassium in whole tobacco plante3
- Comparator
- normal levele1
Not reportedDirection
Verbatim
e1“flue-cured tobacco,solution culture experiment which included normal level,lower calcium level,high calcium level,lower magnesium level,high magnesium level treatments was conducted”
e2“high calcium level and magnesium improved the potassium uptake”
e3“effectively regulated the circulation of potassium in whole tobacco plant”
Claim · model-written summary
High calcium treatment increased potassium content in upper leaves of flue-cured tobacco by 0.38 percentage points relative to normal level.
Verbatim
e1“flue-cured tobacco,solution culture experiment which included normal level,lower calcium level,high calcium level,lower magnesium level,high magnesium level treatments was conducted”
e2“The contents of potassium in upper,middle and lower leaves increased by 0.38,0.41,0.69 percentage points under high calcium treatment”
Claim · model-written summary
High calcium treatment increased potassium content in middle leaves of flue-cured tobacco by 0.41 percentage points relative to normal level.
Verbatim
e1“flue-cured tobacco,solution culture experiment which included normal level,lower calcium level,high calcium level,lower magnesium level,high magnesium level treatments was conducted”
e2“The contents of potassium in upper,middle and lower leaves increased by 0.38,0.41,0.69 percentage points under high calcium treatment”
Claim · model-written summary
High calcium treatment increased potassium content in lower leaves of flue-cured tobacco by 0.69 percentage points relative to normal level.
Verbatim
e1“flue-cured tobacco,solution culture experiment which included normal level,lower calcium level,high calcium level,lower magnesium level,high magnesium level treatments was conducted”
e2“The contents of potassium in upper,middle and lower leaves increased by 0.38,0.41,0.69 percentage points under high calcium treatment”
Claim · model-written summary
High magnesium treatment increased potassium content in upper leaves of flue-cured tobacco by 0.31 percentage points relative to normal level.
Verbatim
e1“flue-cured tobacco,solution culture experiment which included normal level,lower calcium level,high calcium level,lower magnesium level,high magnesium level treatments was conducted”
e2“The contents of potassium in upper,middle and lower leaves increased by 0.38,0.41,0.69 percentage points under high calcium treatment”
e3“increased by 0.31,0.42,0.60 percentage points under high magnesium treatment”
Claim · model-written summary
High magnesium treatment increased potassium content in middle leaves of flue-cured tobacco by 0.42 percentage points relative to normal level.
Verbatim
e1“flue-cured tobacco,solution culture experiment which included normal level,lower calcium level,high calcium level,lower magnesium level,high magnesium level treatments was conducted”
e2“The contents of potassium in upper,middle and lower leaves increased by 0.38,0.41,0.69 percentage points under high calcium treatment”
e3“increased by 0.31,0.42,0.60 percentage points under high magnesium treatment”
Claim · model-written summary
High magnesium treatment increased potassium content in lower leaves of flue-cured tobacco by 0.60 percentage points relative to normal level.
Verbatim
e1“flue-cured tobacco,solution culture experiment which included normal level,lower calcium level,high calcium level,lower magnesium level,high magnesium level treatments was conducted”
e2“The contents of potassium in upper,middle and lower leaves increased by 0.38,0.41,0.69 percentage points under high calcium treatment”
e3“increased by 0.31,0.42,0.60 percentage points under high magnesium treatment”
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calcium atom · nutrient: content · Nicotiana tabacum (tobacco)Positive and negative results
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- no effect
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See all 10 papers →magnesium atom · nutrient: content · Nicotiana tabacum (tobacco)Positive and negative results
14 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
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See all 16 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.