Abstract
Field experiments were carried out to investigate the effect of different humic acid fertilizer levels on the microorganism quantities in rhizosphere soil,activities of soil enzymes and qualities of tobacco leaves in Jiaxian County of Henan province in 2006-2007.The results showed that the quantities of soil bacteria,fungi,actinomyces,phosphate-degrading bacteria,potassium-degrading bacteria and aminate-degrading bacteria,the activities of soil sucrase,urease and phosphatase,and the qualities of tobacco leaves were higher in humic acid treatment than in the control.Humic acid fertilizer levels had closely positive relations with the mount of actinomyces and aminate-degrading bacteria,and had negative relations with the contents of nicotine and starch in tobacco leaves.This indicated that applying 750 kg/ha of humic acid fertilizer was the best.
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Claims 7
Claim · model-written summary
Humic acid treatment increased rhizosphere bacterial, fungal and actinomycete quantities over control.
- Taxon
- tobacco
Nicotiana tabacume0 - Treatment
- humic acid treatmente0
- Outcome
- soil bacteria,fungi,actinomycese0
- Direction
- highere0
- Comparator
- the controle0
- Setting
- Jiaxian County of Henan provincee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the quantities of soil bacteria,fungi,actinomyces,phosphate-degrading bacteria,potassium-degrading bacteria and aminate-degrading bacteria,the activities of soil sucrase,urease and phosphatase,and the qualities of tobacco leaves were higher in humic acid treatment than in the control.”
e1“Jiaxian County of Henan province”
Claim · model-written summary
Humic acid treatment increased soil sucrase, urease and phosphatase activity over control.
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- humic acid treatmente0
- Outcome
- soil sucrase,urease and phosphatasee0
- Direction
- highere0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the activities of soil sucrase,urease and phosphatase,and the qualities of tobacco leaves were higher in humic acid treatment than in the control.”
Claim · model-written summary
Humic acid treatment increased tobacco leaf quality over control.
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- humic acid treatmente0
- Outcome
- qualities of tobacco leavese0
- Direction
- highere0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the qualities of tobacco leaves were higher in humic acid treatment than in the control.”
Claim · model-written summary
Fertilizer level was positively related to actinomycete and aminate-degrading bacterial quantities.
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- Humic acid fertilizer levelse0
- Outcome
- mount of actinomyces and aminate-degrading bacteriae0
- Direction
- positivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Humic acid fertilizer levels had closely positive relations with the mount of actinomyces and aminate-degrading bacteria”
t0“Tobacco”
Claim · model-written summary
Fertilizer level was negatively related to tobacco leaf nicotine content.
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- Humic acid fertilizer levelse0
- Outcome
- contents of nicotinee0
- Direction
- negativee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Humic acid fertilizer levels had closely positive relations with the mount of actinomyces and aminate-degrading bacteria,and had negative relations with the contents of nicotine and starch in tobacco leaves.”
Claim · model-written summary
Fertilizer level was negatively related to tobacco leaf starch content.
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- Humic acid fertilizer levelse0
- Outcome
- starch in tobacco leavese0
- Direction
- negativee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Humic acid fertilizer levels had closely positive relations with the mount of actinomyces and aminate-degrading bacteria,and had negative relations with the contents of nicotine and starch in tobacco leaves.”
Claim · model-written summary
The authors judged 750 kg/ha humic acid fertilizer to be best.
- Taxon
- tobaccoNicotiana tabacumt0
- Outcome
- applying 750 kg/ha of humic acid fertilizere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“applying 750 kg/ha of humic acid fertilizer was the best.”
t0“Tobacco”
The same questions in other papers
other · organism · Nicotiana tabacum (tobacco)Positive and negative results
3 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
1 paper more in this group
See all 5 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.