Abstract
This experiment was conducted in order to study the physiological characteristics of functional axial leaf and branch leaves as affected by applying different levels of nitrogen fertilizer: pure N 0 kg·hm2(N0),207 kg·hm-2(N30),310 kg·hm-2(N45);414 kg·hm-2(N60),using common cotton variety CCRI49.The Results were as follows:(1) Nitrogen deficiency lead to decrease of leaf area index,SPAD,leaf physiological index(NR,the content of soluble protein and soluble sugar),especially in functional axial leaves.(2) NR activity would fall fast at later full boll stage and the content of soluble protein,soluble sugar accumulated excessively when excess nitrogen fertilizer were used which was harmful.(3) The shaded cotton and the non-shaded cotton had higher yield under N30 treatment and N45 treatment,respectively.It showed that shading reduced the absorbition of Nitrogen.In this experiment,the nitrogen application rate among 207～310 kg·hm-2 could keep a blance carbon-nitrogen metabolism level and prevent early senescence under light-nitrogen interaction system.
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Claims 8
Claim · model-written summary
Nitrogen deficiency decreased cotton leaf area index and SPAD.
- Taxon
- cotton
Gossypium hirsutumt0 - Organ / stage
- functional axial leavese0
- Treatment
- Nitrogen deficiencye0
- Outcome
- leaf area index,SPADe0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen deficiency lead to decrease of leaf area index,SPAD,leaf physiological index(NR,the content of soluble protein and soluble sugar),especially in functional axial leaves.”
t0“of cotton leaves in different positions”
Claim · model-written summary
Nitrogen deficiency decreased nitrate reductase and soluble protein and sugar in leaves.
- Taxon
- cottonGossypium hirsutumt0
- Organ / stage
- functional axial leavese0
- Treatment
- Nitrogen deficiencye0
- Outcome
- NR,the content of soluble protein and soluble sugare0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen deficiency lead to decrease of leaf area index,SPAD,leaf physiological index(NR,the content of soluble protein and soluble sugar),especially in functional axial leaves.”
t0“of cotton leaves in different positions”
Claim · model-written summary
Excess nitrogen caused rapid late-stage decline in NR activity.
- Taxon
- cottonGossypium hirsutumt0
- Organ / stage
- later full boll stagee0
- Treatment
- excess nitrogen fertilizere0
- Outcome
- NR activitye0
- Direction
- fall faste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NR activity would fall fast at later full boll stage and the content of soluble protein,soluble sugar accumulated excessively when excess nitrogen fertilizer were used which was harmful.”
t0“of cotton leaves in different positions”
Claim · model-written summary
Excess nitrogen caused excessive soluble protein and sugar accumulation.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- excess nitrogen fertilizere0
- Outcome
- content of soluble protein,soluble sugare0
- Direction
- accumulated excessivelye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NR activity would fall fast at later full boll stage and the content of soluble protein,soluble sugar accumulated excessively when excess nitrogen fertilizer were used which was harmful.”
t0“of cotton leaves in different positions”
Claim · model-written summary
Shaded cotton yielded more under N30.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- N30 treatmente0
- Outcome
- yielde0
- Direction
- highere0
- Qualifier
- shaded cottone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The shaded cotton and the non-shaded cotton had higher yield under N30 treatment and N45 treatment,respectively.”
Claim · model-written summary
Unshaded cotton yielded more under N45.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- N45 treatmente0
- Outcome
- yielde0
- Direction
- highere0
- Qualifier
- non-shaded cottone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The shaded cotton and the non-shaded cotton had higher yield under N30 treatment and N45 treatment,respectively.”
Claim · model-written summary
Shading reduced nitrogen absorption.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- shadinge0
- Outcome
- absorbition of Nitrogene0
- Direction
- reducede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It showed that shading reduced the absorbition of Nitrogen.”
t0“of cotton leaves in different positions”
Claim · model-written summary
Nitrogen at 207 to 310 kg·hm-2 maintained carbon-nitrogen balance and prevented early senescence.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- nitrogen application rate among 207～310 kg·hm-2e0
- Outcome
- carbon-nitrogen metabolism level and prevent early senescencee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the nitrogen application rate among 207～310 kg·hm-2 could keep a blance carbon-nitrogen metabolism level and prevent early senescence under light-nitrogen interaction system.”
t0“of cotton leaves in different positions”
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