Abstract
Field experiments were conducted to analyze the dynamics of LAI,accumulation of above-ground dry matter and above-ground nitrogen content for three cotton varieties (Bt variety 33B,conventional variety CCRI 12 and Bt hybrid CCRI 46) under five nitrogen application levels (0,90,180,270 and 360 kg.hm-2 ) in a randomized completed block design in Anyang. The expolinear growth equation was used to simulate the dynamic of cotton above-ground dry matter; and a power function was used to describe nitrogen dilution. The results showed that:(1) the expolinear growth equation was well fitted to the growth of cotton above-ground dry matter,and the parameters could reflect the influence of interaction between cotton genetics and nitrogen applications. (2) The power function of dry matter and nitrogen content showed the declination of cotton above-ground nitrogen content with the dry matter accumulation,the parameter could be used to explore the ability of nitrogen uptake. (3) The analysis of above-ground dry matter accumulation and nitrogen dilution effect,showed that the appropriate rate of nitrogen application was 180 kg.hm-2 and excessive nitrogen application had no effect with cotton growth and nitrogen uptake.
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Claims 7
Claim · model-written summary
An expolinear equation fit cotton above-ground dry matter growth well.
- Taxon
- cotton
Gossypium hirsutume0 - Outcome
- growth of cotton above-ground dry mattere0
- Qualifier
- well fittede0
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the expolinear growth equation was well fitted to the growth of cotton above-ground dry matter,and the parameters could reflect the influence of interaction between cotton genetics and nitrogen applications”
Claim · model-written summary
The expolinear parameters reflected interaction between cotton genetics and nitrogen applications.
- Taxon
- cottonGossypium hirsutume0
- Outcome
- influence of interaction between cotton genetics and nitrogen applicationse0
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the parameters could reflect the influence of interaction between cotton genetics and nitrogen applications”
Claim · model-written summary
The power function indicated declining above-ground nitrogen content as dry matter accumulated.
- Taxon
- cottonGossypium hirsutume0
- Organ / stage
- above-grounde0
- Outcome
- cotton above-ground nitrogen contente0
- Direction
- declinatione0
- Qualifier
- with the dry matter accumulatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The power function of dry matter and nitrogen content showed the declination of cotton above-ground nitrogen content with the dry matter accumulation”
Claim · model-written summary
The power-function parameter could indicate nitrogen uptake ability.
- Taxon
- cottonGossypium hirsutumt0
- Outcome
- ability of nitrogen uptakee0
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cotton”
e0“the parameter could be used to explore the ability of nitrogen uptake”
Claim · model-written summary
The appropriate nitrogen application rate was 180 kg.hm-2.
- Taxon
- cottonGossypium hirsutumt0
- Outcome
- appropriate rate of nitrogen applicatione0
- Value
- 180 kg.hm-2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cotton”
e0“the appropriate rate of nitrogen application was 180 kg.hm-2”
Claim · model-written summary
Excessive nitrogen application had no effect on cotton growth.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- excessive nitrogen applicatione0
- Outcome
- cotton growthe0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“excessive nitrogen application had no effect with cotton growth and nitrogen uptake”
Claim · model-written summary
Excessive nitrogen application had no effect on nitrogen uptake.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- excessive nitrogen applicatione0
- Outcome
- nitrogen uptakee0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cotton”
e0“excessive nitrogen application had no effect with cotton growth and nitrogen uptake”
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See all 153 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.