Abstract
Effects of different Potassium levels on the flue-cured tobacco variety “K326” agronomic characters,economic characters,chemical components,potassium deficient symptom and degree of weather infected fleck were studied at the same levels of Nitrogen and Phosphorus through field experiment. The results showed that plant height increasing speed was significantly slow at the former and middle stage when K level was above 180 kg/hm2.On the contrary,the height of case-hardened plant improved markedly.When the K level was above 135 kg/hm2,the stem girth and maximal leaf area differed significantly as compared with CK,so did LAI.Yield and product value per unit area took the first place when 180 kg/hm2 potassium was used.Average price and proportion of middle and first grade tobacco leaf of 225 kg/hm2 potassium treatment were the highest as compared with other treatments and CK.Four economic characters of the two treatments differed at obvious significant level as companied with CK.The total sugar and K2O were increased,nicotine, total N,protein and Cl- were decreased with increased K levels.The potassium lacked symptom was alleviated with increased K levels,no symptoms was observed when 180 kg/hm2 potassium was used,the degree of weather infected fleck was decreased when the K levels was increased.
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Claims 11
Claim · model-written summary
Potassium above 180 kg/hm2 significantly slowed tobacco height increase at early and middle stages.
- Taxon
- flue-cured tobaccot0
- Organ / stage
- former and middle stagee0
- Treatment
- K level was above 180 kg/hm2e0
- Outcome
- plant height increasing speede0
- Direction
- slowe0
Not reportedComparator
Verbatim
e0“plant height increasing speed was significantly slow at the former and middle stage when K level was above 180 kg/hm2.”
t0“flue-cured tobacco”
Claim · model-written summary
Potassium above 180 kg/hm2 markedly improved height of case-hardened plants.
- Taxon
- flue-cured tobaccot0
- Treatment
- K level was above 180 kg/hm2e1
- Outcome
- height of case-hardened plante0
- Direction
- improved markedlye0
Not reportedComparator
Verbatim
e0“On the contrary,the height of case-hardened plant improved markedly.”
e1“when K level was above 180 kg/hm2”
t0“flue-cured tobacco”
Claim · model-written summary
Potassium above 135 kg/hm2 significantly changed stem girth, maximum leaf area and LAI relative to CK.
- Taxon
- flue-cured tobaccot0
- Treatment
- K level was above 135 kg/hm2e0
- Outcome
- stem girth and maximal leaf areae0
- Qualifier
- LAIe0
- Comparator
- CKe0
Not reportedDirection
Verbatim
e0“When the K level was above 135 kg/hm2,the stem girth and maximal leaf area differed significantly as compared with CK,so did LAI.”
t0“flue-cured tobacco”
Claim · model-written summary
Yield and product value per area ranked first at 180 kg/hm2 potassium.
- Taxon
- flue-cured tobaccot0
- Treatment
- 180 kg/hm2 potassiume0
- Outcome
- Yield and product value per unit areae0
- Direction
- first placee0
Not reportedComparator
Verbatim
e0“Yield and product value per unit area took the first place when 180 kg/hm2 potassium was used.”
t0“flue-cured tobacco”
Claim · model-written summary
Average price and proportion of higher grade tobacco leaves were highest at 225 kg/hm2 potassium.
Verbatim
e0“Average price and proportion of middle and first grade tobacco leaf of 225 kg/hm2 potassium treatment were the highest as compared with other treatments and CK.”
t0“flue-cured tobacco”
Claim · model-written summary
Economic traits under the two potassium treatments differed significantly from CK.
Not reportedDirection
Verbatim
e0“Four economic characters of the two treatments differed at obvious significant level as companied with CK.”
t0“flue-cured tobacco”
Claim · model-written summary
Total sugar and K2O increased with potassium level.
Verbatim
e0“The total sugar and K2O were increased,nicotine, total N,protein and Cl- were decreased with increased K levels.”
t0“flue-cured tobacco”
Claim · model-written summary
Nicotine, total N, and protein decreased as potassium increased.
Verbatim
e0“The total sugar and K2O were increased,nicotine, total N,protein and Cl- were decreased with increased K levels.”
t0“flue-cured tobacco”
Claim · model-written summary
Chloride decreased with increasing potassium.
Verbatim
e0“The total sugar and K2O were increased,nicotine, total N,protein and Cl- were decreased with increased K levels.”
t0“flue-cured tobacco”
Claim · model-written summary
Potassium deficiency symptoms declined with higher potassium and disappeared at 180 kg/hm2.
- Taxon
- flue-cured tobaccot0
- Treatment
- increased K levelse0
- Outcome
- potassium lacked symptome0
- Direction
- alleviatede0
- Qualifier
- no symptoms was observed when 180 kg/hm2 potassium was usede0
Not reportedComparator
Verbatim
e0“The potassium lacked symptom was alleviated with increased K levels,no symptoms was observed when 180 kg/hm2 potassium was used”
t0“flue-cured tobacco”
Claim · model-written summary
Weather infected fleck decreased with increasing potassium.
- Taxon
- flue-cured tobaccot0
- Treatment
- K levels was increasede0
- Outcome
- degree of weather infected flecke0
- Direction
- decreasede0
Not reportedComparator
Verbatim
e0“the degree of weather infected fleck was decreased when the K levels was increased.”
t0“flue-cured tobacco”
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