Abstract
The effects of irrigation and nitrogen source on concentration of nutrients in the leaves and yield and quality of flue-cured tobacco(Nicotiana Tabacum L.) were studied in field experiment.The results showed that the content of K in flue-cured tobacco leaves increased significantly,but the content of Fe and Mn in the leaves decreased obviously under irrigation condition.With the increasing proportion of nitrate and ammonium in total rates of nitrogen fertilizer,it was found that the content of K in tobacco leaves increased remarkably,the content of Fe decreased significantly,and the change of the other elements content in the leaves was not significant.The results also showed that the distribution of N,P,K,Cu,Zn in leaves on different leaf position of tobacco plant was in the order of upper leafcutterslower leaf,but the opposite result was observed in the distribution of Ca,Mg,Fe.Moreover,the characteristic of nutrients distribution in the leaves of different leaf position was not influenced by irrigation and nitrogen source.With the increasing of nitrate rates, the high quality leaf ratio and content of total nitrogen in cured leaves were increased significantly,the content of nicotine and reducing sugar in the leaves tended to be decreased,but no significant variation was found in yield.Irrigation could remarkably improve the yield and high quality leaf ratio of flue-cured tobacco in dry land.
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Claims 14
Claim · model-written summary
Irrigation significantly increased leaf K content.
- Taxon
- flue-cured tobaccoe0
- Organ / stage
- leavese0
- Treatment
- irrigatione1
- Outcome
- content of Ke0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“content of K in flue-cured tobacco leaves increased significantly”
e1“under irrigation condition”
Claim · model-written summary
Irrigation decreased leaf Fe and Mn content.
- Taxon
- flue-cured tobaccoe1
- Organ / stage
- leavese0
- Treatment
- irrigatione0
- Outcome
- content of Fe and Mne0
- Direction
- decreasede0
Not reportedComparator
Verbatim
e0“the content of Fe and Mn in the leaves decreased obviously under irrigation condition”
e1“flue-cured tobacco leaves”
Claim · model-written summary
Increasing the nitrate and ammonium proportion increased tobacco leaf K content.
- Taxon
- tobacco
Nicotiana tabacume0 - Treatment
- increasing proportion of nitrate and ammonium in total rates of nitrogen fertilizere0
- Outcome
- content of Ke0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With the increasing proportion of nitrate and ammonium in total rates of nitrogen fertilizer,it was found that the content of K in tobacco leaves increased remarkably”
Claim · model-written summary
Increasing the nitrate and ammonium proportion significantly decreased tobacco leaf Fe content.
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- increasing proportion of nitrate and ammonium in total rates of nitrogen fertilizere0
- Outcome
- content of Fee0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With the increasing proportion of nitrate and ammonium in total rates of nitrogen fertilizer,it was found that the content of K in tobacco leaves increased remarkably,the content of Fe decreased significantly”
Claim · model-written summary
Other leaf element contents did not vary significantly as nitrate and ammonium proportions increased.
- Taxon
- flue-cured tobaccoe2
- Treatment
- increasing proportion of nitrate and ammonium in total rates of nitrogen fertilizere1
- Outcome
- other elements contente0
- Direction
- not significante0
Not reportedComparator
Verbatim
e0“the change of the other elements content in the leaves was not significant”
e1“With the increasing proportion of nitrate and ammonium in total rates of nitrogen fertilizer”
e2“flue-cured tobacco leaves”
Claim · model-written summary
N, P, K, Cu and Zn in tobacco leaves followed a reported order across leaf positions.
- Taxon
- tobaccoNicotiana tabacume0
- Organ / stage
- leavese0
- Outcome
- distribution of N,P,K,Cu,Zne0
- Qualifier
- upper leafcutterslower leafe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“distribution of N,P,K,Cu,Zn in leaves on different leaf position of tobacco plant was in the order of upper leafcutterslower leaf”
Claim · model-written summary
Ca, Mg and Fe showed the opposite positional distribution in tobacco leaves.
- Taxon
- tobaccoNicotiana tabacume1
- Organ / stage
- leavese1
- Outcome
- distribution of Ca,Mg,Fee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the opposite result was observed in the distribution of Ca,Mg,Fe”
e1“leaves on different leaf position of tobacco plant”
Claim · model-written summary
Irrigation and nitrogen source did not change the nutrient distribution across tobacco leaf positions.
- Taxon
- tobaccoNicotiana tabacume1
- Treatment
- irrigation and nitrogen sourcee0
- Outcome
- nutrients distributione0
- Direction
- not influencede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the characteristic of nutrients distribution in the leaves of different leaf position was not influenced by irrigation and nitrogen source”
e1“tobacco plant”
Claim · model-written summary
Increasing nitrate rates significantly increased the high quality leaf ratio.
- Taxon
- flue-cured tobaccoe1
- Treatment
- increasing of nitrate ratese0
- Outcome
- high quality leaf ratioe0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“With the increasing of nitrate rates, the high quality leaf ratio and content of total nitrogen in cured leaves were increased significantly”
e1“flue-cured tobacco(Nicotiana Tabacum L.)”
Claim · model-written summary
Increasing nitrate rates significantly increased total nitrogen content in cured leaves.
- Taxon
- flue-cured tobaccoe1
- Treatment
- increasing of nitrate ratese0
- Outcome
- content of total nitrogene0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“With the increasing of nitrate rates, the high quality leaf ratio and content of total nitrogen in cured leaves were increased significantly”
e1“flue-cured tobacco(Nicotiana Tabacum L.)”
Claim · model-written summary
Increasing nitrate rates tended to decrease nicotine and reducing sugar in cured tobacco leaves.
- Taxon
- flue-cured tobaccoe2
- Treatment
- increasing of nitrate ratese1
- Outcome
- content of nicotine and reducing sugare0
- Direction
- decreasede0
Not reportedComparator
Verbatim
e0“the content of nicotine and reducing sugar in the leaves tended to be decreased”
e1“With the increasing of nitrate rates”
e2“flue-cured tobacco(Nicotiana Tabacum L.)”
Claim · model-written summary
Increasing nitrate rates produced no significant variation in tobacco yield.
- Taxon
- flue-cured tobaccoe2
- Treatment
- increasing of nitrate ratese1
- Outcome
- yielde0
- Direction
- no significant variatione0
Not reportedComparator
Verbatim
e0“no significant variation was found in yield”
e1“With the increasing of nitrate rates”
e2“flue-cured tobacco(Nicotiana Tabacum L.)”
Claim · model-written summary
Irrigation improved flue-cured tobacco yield in dry land.
Not reportedComparator
Verbatim
e0“Irrigation could remarkably improve the yield and high quality leaf ratio of flue-cured tobacco in dry land”
Claim · model-written summary
Irrigation improved the high quality leaf ratio of flue-cured tobacco in dry land.
- Taxon
- flue-cured tobaccoe0
- Treatment
- Irrigatione0
- Outcome
- high quality leaf ratioe0
- Direction
- improvee0
- Setting
- dry lande0
Not reportedComparator
Verbatim
e0“Irrigation could remarkably improve the yield and high quality leaf ratio of flue-cured tobacco in dry land”
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