Abstract
In order to solve the problems existing in the production of flue-cured tobacco about low nitrogen and potassium use efficiency and inferior quality by unreasonable fertilizing technology,this project studied the change law of nitrogen and potassium in soil and the accumulation and distribution law in flue-cured tobacco and compared the use efficiency of nitrogen and potassium,yield and quality of flue-cured tobacco by different fertilization modes to filtrate a suitable fertilization mode for Meizhou tobacco production. The experiment with 7 treatments used fluecured tobacco variety Yunyan 87 as material. Seven treatments respectively were: 1Use all nitrogen and potassium as base fertilizer( control); 2The amount of nitrogen and potassium is 90% of treatment 1 and 50% use as base fertilizer,50% as topdressing; 3The amount of nitrogen and potassium is 70% of treatment 1 and 30% use as base fertilizer,70% as topdressing; 4Base fertilizer without nitrogen and potassium and use real-time nitrogen man-agement technique( RTNM) as topdressing; 5Use 30% of nitrogen and potassium of treatment 1 as base fertilizer,apply RTNM to topdressing; 6No nitrogen and potassium; 7The application of nitrogen and potassium is the same as treatment 1 but without organic fertilizer; Topdressing by RTNM made nitrogen and potassium accumulation higher than other treatments. Allocation proportion of nitrogen and potassium in leaves was greater than stem in the aerial parts of tobacco. Compared with the control,top dressed nitrogen and potassium significantly improved the agronomic efficiency( AE),partial factor productivity( PFP),recovery efficiency( RE) and harvest index( HI) of nitrogen and potassium of flue-cured tobacco after transplanting; The comprehensive performance of fertilizer use efficiency in treatment 5 was the best. Its AE of nitrogen and potassium were respectively 38. 71% and 37. 99%,and RE were respectively 34. 24% and 27. 52% higher than control. Treatment 5 achieved the highest yield and the output value and the yield and output value were respectively 20. 66% and 28. 39% higher than control. The chemical constituents of B2 F and C3 F in treatment 5 were suitable for all treatments. Nitrogen and potassium as basal+ RTNM topdressing achieved the highest use efficiency of nitrogen and potassium,higher yield and better quality and will be more suitable for application in the production of flue-cured tobacco in Meizhou.
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Claims 11
Claim · model-written summary
RTNM topdressing increased nitrogen and potassium accumulation relative to other treatments.
Verbatim
t0“Flue-cured Tobacco”
e0“Topdressing by RTNM made nitrogen and potassium accumulation higher than other treatments.”
Claim · model-written summary
Leaf allocation of nitrogen and potassium exceeded stem allocation.
Verbatim
t0“Flue-cured Tobacco”
e0“Allocation proportion of nitrogen and potassium in leaves was greater than stem in the aerial parts of tobacco.”
Claim · model-written summary
Topdressed nitrogen and potassium significantly improved agronomic efficiency( AE),partial factor productivity( PFP) versus control.
Verbatim
t0“Flue-cured Tobacco”
e0“Compared with the control,top dressed nitrogen and potassium significantly improved the agronomic efficiency( AE),partial factor productivity( PFP),recovery efficiency( RE) and harvest index( HI) of nitrogen and potassium of flue-cured tobacco after transplanting;”
Claim · model-written summary
Topdressed nitrogen and potassium significantly improved recovery efficiency( RE) and harvest index( HI) versus control.
Verbatim
t0“Flue-cured Tobacco”
e0“Compared with the control,top dressed nitrogen and potassium significantly improved the agronomic efficiency( AE),partial factor productivity( PFP),recovery efficiency( RE) and harvest index( HI) of nitrogen and potassium of flue-cured tobacco after transplanting;”
Claim · model-written summary
AE of nitrogen was 38. 71% higher than control in treatment 5.
- Taxon
- Flue-cured Tobaccot0
- Outcome
- AE of nitrogen and potassiume0
- Direction
- highere0
- Value
- 38. 71%e0
- Comparator
- controle0
Not reportedTreatment
Verbatim
t0“Flue-cured Tobacco”
e0“Its AE of nitrogen and potassium were respectively 38. 71% and 37. 99%,and RE were respectively 34. 24% and 27. 52% higher than control.”
Claim · model-written summary
AE of potassium was 37. 99% higher than control in treatment 5.
- Taxon
- Flue-cured Tobaccot0
- Outcome
- AE of nitrogen and potassiume0
- Direction
- highere0
- Value
- 37. 99%e0
- Comparator
- controle0
Not reportedTreatment
Verbatim
t0“Flue-cured Tobacco”
e0“Its AE of nitrogen and potassium were respectively 38. 71% and 37. 99%,and RE were respectively 34. 24% and 27. 52% higher than control.”
Claim · model-written summary
RE of nitrogen was 34. 24% higher than control in treatment 5.
Not reportedTreatment
Verbatim
t0“Flue-cured Tobacco”
e0“Its AE of nitrogen and potassium were respectively 38. 71% and 37. 99%,and RE were respectively 34. 24% and 27. 52% higher than control.”
Claim · model-written summary
RE of potassium was 27. 52% higher than control in treatment 5.
Not reportedTreatment
Verbatim
t0“Flue-cured Tobacco”
e0“Its AE of nitrogen and potassium were respectively 38. 71% and 37. 99%,and RE were respectively 34. 24% and 27. 52% higher than control.”
Claim · model-written summary
Treatment 5 yield was 20. 66% higher than control.
Verbatim
t0“Flue-cured Tobacco”
e0“Treatment 5 achieved the highest yield and the output value and the yield and output value were respectively 20. 66% and 28. 39% higher than control.”
Claim · model-written summary
Treatment 5 output value was 28. 39% higher than control.
Verbatim
t0“Flue-cured Tobacco”
e0“Treatment 5 achieved the highest yield and the output value and the yield and output value were respectively 20. 66% and 28. 39% higher than control.”
Claim · model-written summary
Treatment 5 gave suitable chemical constituents of B2 F and C3 F.
- Taxon
- Flue-cured Tobaccot0
- Treatment
- treatment 5e0
- Outcome
- chemical constituents of B2 F and C3 Fe0
- Comparator
- all treatmentse0
Not reportedDirection
Verbatim
t0“Flue-cured Tobacco”
e0“The chemical constituents of B2 F and C3 F in treatment 5 were suitable for all treatments.”
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