Paper · 2013

Effect of planting density on growth and development characterstics of tobacco

Qiu Zhong-zh

6
claims
8
verbatim quotes
0
citations
3
research areas
—
Not open access

Abstract

By changing the planting density of tobacco to form different population structure,growing period,agronomic traits,photosynthesis,yield,output value and chemical composition was determind to obtain optimal planting density.The results showed that,low planting density improved the agronomic traits,chlorophyll content and photosynthesis of tobacco,and the plant individual development was good,but the yield,output value and chemical coordination was lower than the treatments of high planting density.In this study,as the yield and output value was highest,and chemical coordination was also good,the optimal planting density was 18 510 plants/hm2 for current production of flue-cured tobacco in Xingren county.

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Claims 6

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Low planting density improved tobacco agronomic traits.

Treatment
low planting densitye0
Outcome
agronomic traitse0
Direction
improvede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Nicotiana tabacum
Nicotiana tabacum · TaxonJom / Joachim Müllerchen · CC BY 2.5 · Wikimedia Commons ↗

Verbatim

e0

“low planting density improved the agronomic traits,chlorophyll content and photosynthesis of tobacco”

✓ located verbatim in the source · abstract, characters 247–347 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Low planting density improved tobacco chlorophyll content and photosynthesis.

Treatment
low planting densitye0
Outcome
chlorophyll content and photosynthesise0
Direction
improvede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Nicotiana tabacum
Nicotiana tabacum · TaxonJom / Joachim Müllerchen · CC BY 2.5 · Wikimedia Commons ↗

Verbatim

e0

“low planting density improved the agronomic traits,chlorophyll content and photosynthesis of tobacco”

✓ located verbatim in the source · abstract, characters 247–347 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Low planting density resulted in good individual plant development.

Outcome
plant individual developmente0
Direction
goode0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Nicotiana tabacum
Nicotiana tabacum · TaxonJom / Joachim Müllerchen · CC BY 2.5 · Wikimedia Commons ↗

Verbatim

e0

“and the plant individual development was good”

✓ located verbatim in the source · abstract, characters 348–393 · show in text ↑
t0

“tobacco”

✓ located verbatim in the source · title, characters 71–78 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Low density produced lower yield and output value than high density.

Treatment
low planting densitye0
Outcome
yield,output valuee0
Direction
lowere0
Comparator
high planting densitye0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Nicotiana tabacum
Nicotiana tabacum · TaxonJom / Joachim Müllerchen · CC BY 2.5 · Wikimedia Commons ↗

Verbatim

e0

“low planting density improved the agronomic traits,chlorophyll content and photosynthesis of tobacco,and the plant individual development was good,but the yield,output value and chemical coordination was lower than the treatments of high planting density”

✓ located verbatim in the source · abstract, characters 247–501 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Low density produced lower chemical coordination than high density.

Outcome
chemical coordinatione0
Direction
lowere0
Comparator
high planting densitye0

Not reportedTreatment

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Nicotiana tabacum
Nicotiana tabacum · TaxonJom / Joachim Müllerchen · CC BY 2.5 · Wikimedia Commons ↗

Verbatim

e0

“but the yield,output value and chemical coordination was lower than the treatments of high planting density”

✓ located verbatim in the source · abstract, characters 394–501 · show in text ↑
t0

“tobacco”

✓ located verbatim in the source · title, characters 71–78 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The authors identified 18 510 plants/hm2 as optimal for flue-cured tobacco production in Xingren county.

Taxon
flue-cured tobaccoe0
Outcome
optimal planting densitye0
Value
18 510 plants/hm2e0
Setting
Xingren countye0

Verbatim

e0

“the optimal planting density was 18 510 plants/hm2 for current production of flue-cured tobacco in Xingren county”

✓ located verbatim in the source · abstract, characters 598–711 · show in text ↑

density · yield · Nicotiana tabacum (tobacco)Positive and negative results

22 papers: 20 positive, 2 negative or no effect

1 paper in the same direction as this paper · 20 in the opposite direction

  1. positive
  2. positive
  3. positive

18 papers more in this group

See all 22 papers →

density · physiology: photosynthesis · Nicotiana tabacum (tobacco)Results agree

2 papers: 2 positive, 0 negative or no effect

1 paper in the same direction as this paper

  1. positive
See all 2 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.