Abstract
It is urgent and necessary to provide techniques of economic application on fertilizers for nutrition improvement of Bt cotton and cotton production in coastal saline soil in the Yellow River Delta.The experiments were conducted with Bt cotton cultivar SCRC28 in coastal saline soil in the Yellow River Delta,Shandong province.The effects of different amounts and ratios of N,P and K,and N and P fertilizers on nutrient(N,P,and K) assimilation,Na+ assimilation,net photosynthetic rate(Pn),dry matter accumulation and lint yield of Bt cotton were investigated in three types(low,middle,and high levels of salinity) of coastal saline field.The results showed that nutrient uptake of Bt cotton in the treatments of NP,NPK especially,in low,middle and high levels of salinity field was significantly higher than that in corresponding controls.And the Na+ uptake of cotton in the same treatments was significantly lower than that in corresponding controls.Nutrient use efficiency in agronomy(NUEa) of cotton in the NPK treatment in low,middle and high levels of salinity field was the highest among the three treatments.NUEa of Bt cotton in the NPK treatment in low,middle and high levels of salinity field was 0.20,1.95,and 2.07 kg lint kg-1 N,0.87,8.35,and 8.71 kg Lint kg-1 P,and 0.26,2.89,and 3.77 kg Lint kg-1 K,respectively.The coordination of N,P,and K fertilizers could maintain the highest leaf area,chlorophyll content and Pn among the three treatments in low,middle and high levels of salinity field,respectively.The biomass yield and lint yield of Bt cotton in the NPK treatment in low,middle and high levels of salinity field were also the highest among the three treatments,respectively.The lint yield in the NPK treatments in low,middle,and high levels of salinity field was increased by 2.53%,28.67% and 30.47% compared to the control,respectively,than that in corresponding controls.And the fertilization effects in middle and high levels of salinity field were obviously better than those in low level of salinity field.Further analysis indicated,rational fertilizer application,based on classification of soil salinity,was an effective way to alleviate nutrition obstacles of saline soil,improve cotton nutrition,and enhance the NUEa and cotton yield in coastal saline fields.
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Claims 19
Claim · model-written summary
Nutrient uptake of Bt cotton under NP and NPK treatments was significantly higher than in controls across low, middle and high salinity fields.
Verbatim
e0“nutrient uptake of Bt cotton in the treatments of NP,NPK especially,in low,middle and high levels of salinity field was significantly higher than that in corresponding controls”
Claim · model-written summary
Na+ uptake of cotton under NP and NPK treatments was significantly lower than in controls.
- Taxon
- cotton
Gossypium hirsutume1 - Treatment
- NP,NPKe0
- Outcome
- Na+ uptakee1
- Direction
- lowere1
- Comparator
- corresponding controlse1
- Setting
- low,middle and high levels of salinity fielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nutrient uptake of Bt cotton in the treatments of NP,NPK especially,in low,middle and high levels of salinity field was significantly higher than that in corresponding controls”
e1“the Na+ uptake of cotton in the same treatments was significantly lower than that in corresponding controls”
Claim · model-written summary
NUEa of cotton under NPK was the highest among the three treatments in low, middle and high salinity fields.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- NPK treatmente0
- Outcome
- NUEae0
- Direction
- the higheste0
- Comparator
- the three treatmentse0
- Setting
- low, middle and high levels of salinity fielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NUEa) of cotton in the NPK treatment in low, middle and high levels of salinity field was the highest among the three treatments”
Claim · model-written summary
NUEa of Bt cotton under NPK in low salinity was 0.20 kg lint kg-1 N.
- Taxon
- Bt cottone0
- Treatment
- NPK treatmente0
- Outcome
- NUEae0
- Value
- 0.20e0
- Qualifier
- kg lint kg-1 Ne0
- Setting
- low, middle and high levels of salinity fielde0
Not reportedComparatorDirection
Verbatim
e0“NUEa of Bt cotton in the NPK treatment in low, middle and high levels of salinity field was 0.20,1.95,and 2.07 kg lint kg-1 N,0.87,8.35,and 8.71 kg Lint kg-1 P,and 0.26,2.89,and 3.77 kg Lint kg-1 K”
Claim · model-written summary
NUEa of Bt cotton under NPK in middle salinity was 1.95 kg lint kg-1 N.
- Taxon
- Bt cottone0
- Treatment
- NPK treatmente0
- Outcome
- NUEae0
- Value
- 1.95e0
- Qualifier
- kg lint kg-1 Ne0
- Setting
- low, middle and high levels of salinity fielde0
Not reportedComparatorDirection
Verbatim
e0“NUEa of Bt cotton in the NPK treatment in low, middle and high levels of salinity field was 0.20,1.95,and 2.07 kg lint kg-1 N,0.87,8.35,and 8.71 kg Lint kg-1 P,and 0.26,2.89,and 3.77 kg Lint kg-1 K”
Claim · model-written summary
NUEa of Bt cotton under NPK in high salinity was 2.07 kg lint kg-1 N.
- Taxon
- Bt cottone0
- Treatment
- NPK treatmente0
- Outcome
- NUEae0
- Value
- 2.07e0
- Qualifier
- kg lint kg-1 Ne0
- Setting
- low, middle and high levels of salinity fielde0
Not reportedComparatorDirection
Verbatim
e0“NUEa of Bt cotton in the NPK treatment in low, middle and high levels of salinity field was 0.20,1.95,and 2.07 kg lint kg-1 N,0.87,8.35,and 8.71 kg Lint kg-1 P,and 0.26,2.89,and 3.77 kg Lint kg-1 K”
Claim · model-written summary
NUEa of Bt cotton under NPK in low salinity was 0.87 kg Lint kg-1 P.
- Taxon
- Bt cottone0
- Treatment
- NPK treatmente0
- Outcome
- NUEae0
- Value
- 0.87e0
- Qualifier
- kg Lint kg-1 Pe0
- Setting
- low, middle and high levels of salinity fielde0
Not reportedComparatorDirection
Verbatim
e0“NUEa of Bt cotton in the NPK treatment in low, middle and high levels of salinity field was 0.20,1.95,and 2.07 kg lint kg-1 N,0.87,8.35,and 8.71 kg Lint kg-1 P,and 0.26,2.89,and 3.77 kg Lint kg-1 K”
Claim · model-written summary
NUEa of Bt cotton under NPK in middle salinity was 8.35 kg Lint kg-1 P.
- Taxon
- Bt cottone0
- Treatment
- NPK treatmente0
- Outcome
- NUEae0
- Value
- 8.35e0
- Qualifier
- kg Lint kg-1 Pe0
- Setting
- low, middle and high levels of salinity fielde0
Not reportedComparatorDirection
Verbatim
e0“NUEa of Bt cotton in the NPK treatment in low, middle and high levels of salinity field was 0.20,1.95,and 2.07 kg lint kg-1 N,0.87,8.35,and 8.71 kg Lint kg-1 P,and 0.26,2.89,and 3.77 kg Lint kg-1 K”
Claim · model-written summary
NUEa of Bt cotton under NPK in high salinity was 8.71 kg Lint kg-1 P.
- Taxon
- Bt cottone0
- Treatment
- NPK treatmente0
- Outcome
- NUEae0
- Value
- 8.71e0
- Qualifier
- kg Lint kg-1 Pe0
- Setting
- low, middle and high levels of salinity fielde0
Not reportedComparatorDirection
Verbatim
e0“NUEa of Bt cotton in the NPK treatment in low, middle and high levels of salinity field was 0.20,1.95,and 2.07 kg lint kg-1 N,0.87,8.35,and 8.71 kg Lint kg-1 P,and 0.26,2.89,and 3.77 kg Lint kg-1 K”
Claim · model-written summary
NUEa of Bt cotton under NPK in low salinity was 0.26 kg Lint kg-1 K.
- Taxon
- Bt cottone0
- Treatment
- NPK treatmente0
- Outcome
- NUEae0
- Value
- 0.26e0
- Qualifier
- kg Lint kg-1 Ke0
- Setting
- low, middle and high levels of salinity fielde0
Not reportedComparatorDirection
Verbatim
e0“NUEa of Bt cotton in the NPK treatment in low, middle and high levels of salinity field was 0.20,1.95,and 2.07 kg lint kg-1 N,0.87,8.35,and 8.71 kg Lint kg-1 P,and 0.26,2.89,and 3.77 kg Lint kg-1 K”
Claim · model-written summary
NUEa of Bt cotton under NPK in middle salinity was 2.89 kg Lint kg-1 K.
- Taxon
- Bt cottone0
- Treatment
- NPK treatmente0
- Outcome
- NUEae0
- Value
- 2.89e0
- Qualifier
- kg Lint kg-1 Ke0
- Setting
- low, middle and high levels of salinity fielde0
Not reportedComparatorDirection
Verbatim
e0“NUEa of Bt cotton in the NPK treatment in low, middle and high levels of salinity field was 0.20,1.95,and 2.07 kg lint kg-1 N,0.87,8.35,and 8.71 kg Lint kg-1 P,and 0.26,2.89,and 3.77 kg Lint kg-1 K”
Claim · model-written summary
NUEa of Bt cotton under NPK in high salinity was 3.77 kg Lint kg-1 K.
- Taxon
- Bt cottone0
- Treatment
- NPK treatmente0
- Outcome
- NUEae0
- Value
- 3.77e0
- Qualifier
- kg Lint kg-1 Ke0
- Setting
- low, middle and high levels of salinity fielde0
Not reportedComparatorDirection
Verbatim
e0“NUEa of Bt cotton in the NPK treatment in low, middle and high levels of salinity field was 0.20,1.95,and 2.07 kg lint kg-1 N,0.87,8.35,and 8.71 kg Lint kg-1 P,and 0.26,2.89,and 3.77 kg Lint kg-1 K”
Claim · model-written summary
Combined N, P and K fertilisation maintained the highest leaf area, chlorophyll content and Pn among the three treatments in low, middle and high salinity fields.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- coordination of N,P,and K fertilizerse0
- Outcome
- leaf area,chlorophyll content and Pne0
- Direction
- the higheste0
- Comparator
- the three treatmentse0
- Setting
- low,middle and high levels of salinity fielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“on Cotton Grown in Saline Soil”
e0“The coordination of N,P,and K fertilizers could maintain the highest leaf area,chlorophyll content and Pn among the three treatments in low,middle and high levels of salinity field”
Claim · model-written summary
Biomass and lint yield of Bt cotton under NPK were the highest among the three treatments in all three salinity fields.
Verbatim
e0“The biomass yield and lint yield of Bt cotton in the NPK treatment in low, middle and high levels of salinity field were also the highest among the three treatments”
Claim · model-written summary
NPK increased lint yield of cotton by 2.53% in low salinity field compared with the control.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- NPK treatmentse0
- Outcome
- lint yielde0
- Direction
- increasede0
- Value
- 2.53%e0
- Qualifier
- lowe0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“on Cotton Grown in Saline Soil”
e0“The lint yield in the NPK treatments in low,middle,and high levels of salinity field was increased by 2.53%,28.67% and 30.47% compared to the control”
Claim · model-written summary
NPK increased lint yield of cotton by 28.67% in middle salinity field compared with the control.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- NPK treatmentse0
- Outcome
- lint yielde0
- Direction
- increasede0
- Value
- 28.67%e0
- Qualifier
- middlee0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“on Cotton Grown in Saline Soil”
e0“The lint yield in the NPK treatments in low,middle,and high levels of salinity field was increased by 2.53%,28.67% and 30.47% compared to the control”
Claim · model-written summary
NPK increased lint yield of cotton by 30.47% in high salinity field compared with the control.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- NPK treatmentse0
- Outcome
- lint yielde0
- Direction
- increasede0
- Value
- 30.47%e0
- Qualifier
- highe0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“on Cotton Grown in Saline Soil”
e0“The lint yield in the NPK treatments in low,middle,and high levels of salinity field was increased by 2.53%,28.67% and 30.47% compared to the control”
Claim · model-written summary
Fertilisation effects on cotton were obviously better in middle and high salinity fields than in low salinity field.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- fertilizatione0
- Outcome
- fertilization effectse0
- Direction
- obviously bettere0
- Comparator
- low level of salinity fielde0
- Setting
- middle and high levels of salinity fielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“on Cotton Grown in Saline Soil”
e0“the fertilization effects in middle and high levels of salinity field were obviously better than those in low level of salinity field”
Claim · model-written summary
The authors recommend rational fertilizer application based on soil salinity classification to alleviate nutrition obstacles of saline soil for cotton.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- rational fertilizer applicatione0
- Outcome
- alleviate nutrition obstacles of saline soile0
- Setting
- coastal saline fieldse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rational fertilizer application,based on classification of soil salinity,was an effective way to alleviate nutrition obstacles of saline soil,improve cotton nutrition,and enhance the NUEa and cotton yield in coastal saline fields”
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