Abstract
【Objective】This study aims to explore nutrient deficiency symptom,nutrient absorption and accumulation of cotton during the different periods by using nutrition supply disruption in different leaf ages of cotton.【Method】Effect of N,P and K elements deficiency on the growth and the nutrition accumulation of cotton in different leaf ages was studied by applying N,P and K deficiencies and CK treatments under water condition to measure the height,the leaf area,the contents of nutrition and the dry matter accumulation of cotton.【Result】The results suggested that the growth of cotton was significantly restrained by lacking N,P and K.Compared with the normal cotton,the height of cotton and the average leaf area of the last leaf but four under the condition of elements deficiency declined 37.4%,20.8%,27.6%and 33.3%,32.5%,20.3% respectively.The elements absorption of cotton significantly dropped under the condition of elements deficiency.Compared with the normal cotton,the N accumulation rate of N deficiency during the fourth leaf age,the eighth leaf age and the twelfth leaf age decreased 53.3%,37.8%and 27.5%respectively,the P accumulation rate of P deficiency during the fourth leaf age,the eighth leaf age,the twelfth leaf age decreased 75.2%,73.1%and 74.1%respectively,the K accumulation rate of K deficiency during the fourth leaf age, the eighth leaf age,the twelfth leaf age decreased 44.9%,38.3%and 37.4%respectively.Compared with the normal cotton,the dry matter accumulation of cotton under the condition of N,P and K elements deficiency declined 24.1%,13.4%and 24.0%respectively.【Conclusion】In this experiment condition, lacking N,P and K in prophase(before the eight leaf age) significandy delayed cotton growth and reduced the nutrient absorption,but lacking N,P and K in anaphase(after the twelve leaf age) greatly decreased the dry matter accumulation.Therefore,rational application of fertilizer according to the leaf age could timely supply nutrients to cotton,enhance nutrients' utilization efficiency and provide theoretical basis for cotton efficient production.
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Claims 11
Claim · model-written summary
Lacking N, P and K significantly restrained cotton growth compared with normal cotton.
- Taxon
- cotton
Gossypium hirsutume1 - Treatment
- lacking N,P and Ke1
- Outcome
- growth of cottone1
- Direction
- restrainede1
- Comparator
- normal cottone2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the growth of cotton was significantly restrained by lacking N,P and K”
e2“Compared with the normal cotton, the height of cotton and the average leaf area of the last leaf but four under the condition of elements deficiency declined 37.4%,20.8%,27.6%and 33.3%,32.5%,20.3% respectively”
Claim · model-written summary
Height of cotton declined under element deficiency compared with normal cotton.
- Taxon
- cottonGossypium hirsutume2
- Treatment
- elements deficiencye2
- Outcome
- height of cottone2
- Direction
- declinede2
- Value
- 37.4%,20.8%,27.6%e2
- Comparator
- normal cottone2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Compared with the normal cotton, the height of cotton and the average leaf area of the last leaf but four under the condition of elements deficiency declined 37.4%,20.8%,27.6%and 33.3%,32.5%,20.3% respectively”
Claim · model-written summary
Average leaf area of the last leaf but four declined under element deficiency compared with normal cotton.
- Taxon
- cottonGossypium hirsutume2
- Treatment
- elements deficiencye2
- Outcome
- average leaf area of the last leaf but foure2
- Direction
- declinede2
- Value
- 33.3%,32.5%,20.3%e2
- Comparator
- normal cottone2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Compared with the normal cotton, the height of cotton and the average leaf area of the last leaf but four under the condition of elements deficiency declined 37.4%,20.8%,27.6%and 33.3%,32.5%,20.3% respectively”
Claim · model-written summary
N accumulation rate under N deficiency decreased at the fourth, eighth and twelfth leaf ages.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- N deficiencye3
- Outcome
- N accumulation ratee3
- Direction
- decreasede3
- Value
- 53.3%,37.8%and 27.5%e3
- Comparator
- normal cottone3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the growth of cotton was significantly restrained by lacking N,P and K”
e3“Compared with the normal cotton,the N accumulation rate of N deficiency during the fourth leaf age,the eighth leaf age and the twelfth leaf age decreased 53.3%,37.8%and 27.5%respectively”
Claim · model-written summary
P accumulation rate under P deficiency decreased at the fourth, eighth and twelfth leaf ages.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- P deficiencye4
- Outcome
- P accumulation ratee4
- Direction
- decreasede4
- Value
- 75.2%,73.1%and 74.1%e4
- Comparator
- normal cottone3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the growth of cotton was significantly restrained by lacking N,P and K”
e3“Compared with the normal cotton,the N accumulation rate of N deficiency during the fourth leaf age,the eighth leaf age and the twelfth leaf age decreased 53.3%,37.8%and 27.5%respectively”
e4“the P accumulation rate of P deficiency during the fourth leaf age,the eighth leaf age,the twelfth leaf age decreased 75.2%,73.1%and 74.1%respectively”
Claim · model-written summary
K accumulation rate under K deficiency decreased at the fourth, eighth and twelfth leaf ages.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- K deficiencye5
- Outcome
- K accumulation ratee5
- Direction
- decreasede5
- Value
- 44.9%,38.3%and 37.4%e5
- Comparator
- normal cottone3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the growth of cotton was significantly restrained by lacking N,P and K”
e3“Compared with the normal cotton,the N accumulation rate of N deficiency during the fourth leaf age,the eighth leaf age and the twelfth leaf age decreased 53.3%,37.8%and 27.5%respectively”
e5“the K accumulation rate of K deficiency during the fourth leaf age, the eighth leaf age,the twelfth leaf age decreased 44.9%,38.3%and 37.4%respectively”
Claim · model-written summary
Dry matter accumulation of cotton under N, P and K deficiency declined.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- N,P and K elements deficiencye6
- Outcome
- dry matter accumulation of cottone6
- Direction
- declinede6
- Value
- 24.1%,13.4%and 24.0%e6
- Comparator
- normal cottone2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the growth of cotton was significantly restrained by lacking N,P and K”
e2“Compared with the normal cotton, the height of cotton and the average leaf area of the last leaf but four under the condition of elements deficiency declined 37.4%,20.8%,27.6%and 33.3%,32.5%,20.3% respectively”
e6“the dry matter accumulation of cotton under the condition of N,P and K elements deficiency declined 24.1%,13.4%and 24.0%respectively”
Claim · model-written summary
Lacking N, P and K in prophase, before the eighth leaf age, significantly delayed cotton growth.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- lacking N,P and K in prophase(before the eight leaf age)e7
- Outcome
- cotton growthe7
- Direction
- delayede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the growth of cotton was significantly restrained by lacking N,P and K”
e7“lacking N,P and K in prophase(before the eight leaf age) significandy delayed cotton growth and reduced the nutrient absorption”
Claim · model-written summary
Lacking N, P and K in prophase, before the eighth leaf age, reduced nutrient absorption of cotton.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- lacking N,P and K in prophase(before the eight leaf age)e7
- Outcome
- nutrient absorptione7
- Direction
- reducede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the growth of cotton was significantly restrained by lacking N,P and K”
e7“lacking N,P and K in prophase(before the eight leaf age) significandy delayed cotton growth and reduced the nutrient absorption”
Claim · model-written summary
Lacking N, P and K in anaphase, after the twelfth leaf age, decreased dry matter accumulation of cotton.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- lacking N,P and K in anaphase(after the twelve leaf age)e0
- Outcome
- dry matter accumulatione0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the growth of cotton was significantly restrained by lacking N,P and K”
e0“lacking N,P and K in anaphase(after the twelve leaf age) greatly decreased the dry matter accumulation”
Claim · model-written summary
Rational fertilizer application according to leaf age could timely supply nutrients to cotton.
- Taxon
- cottonGossypium hirsutume0
- Outcome
- rational application of fertilizer according to the leaf agee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rational application of fertilizer according to the leaf age could timely supply nutrients to cotton”
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See all 63 papers →8 of 12 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
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.