Abstract
By setting tube experiment under field conditions,we aimed to exploit the influence on growth and photosynthetic characteristic of sunflower stemming from different amounts of phosphorus fertilizer(P2O50,60,120,180 kg/hm2),thus providing theoretical implications for the reasonable usage of phosphate fertilizer in saline cultivated land of Hetao irrigation district.The results showed that increasing the phosphate fertilizer application in saline soil promoted sunflower root and leaf growth and it showed the most obvious effect in the squaring stage and flowering stage of sunflower.The application of phosphate fertilizer also improved the net photosynthetic rate of sunflower leaves in the squaring period,but no significant effect on the chlorophyll content(SPAD value) of sunflower leaves was found.The application of phosphate fertilizer also increased the whole-day net photosynthetic rate of sunflower leaves in the filling period,and there were significant differences between phosphate fertilizer treatments and the control(CK) in 10:00 and 16:00.In addition,the application of phosphate fertilizer enhanced the harvest agronomic indicators of sunflower,and significantly increased the dry matter accumulation in various organs of sunflower.When the phosphorus reached 180 kg/hm2,it showed the best effect on the growth and photosynthesis of sunflower.
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Claims 8
Claim · model-written summary
More phosphate fertilizer promoted sunflower root and leaf growth, especially at squaring and flowering.
- Taxon
- sunflower
Helianthus annuuse0 - Organ / stage
- squaring stage and flowering stagee0
- Treatment
- increasing the phosphate fertilizer applicatione0
- Outcome
- root and leaf growthe0
- Direction
- promotede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increasing the phosphate fertilizer application in saline soil promoted sunflower root and leaf growth and it showed the most obvious effect in the squaring stage and flowering stage of sunflower”
Claim · model-written summary
Phosphate fertilizer improved sunflower leaf net photosynthetic rate during squaring.
- Taxon
- sunflowerHelianthus annuuse0
- Organ / stage
- leaves in the squaring periode0
- Treatment
- phosphate fertilizere0
- Outcome
- net photosynthetic ratee0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The application of phosphate fertilizer also improved the net photosynthetic rate of sunflower leaves in the squaring period”
Claim · model-written summary
Phosphate fertilizer had no significant effect on sunflower leaf chlorophyll content.
- Taxon
- sunflowerHelianthus annuuse0
- Treatment
- phosphate fertilizert0
- Outcome
- chlorophyll content(SPAD value)e0
- Direction
- no significant effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no significant effect on the chlorophyll content(SPAD value) of sunflower leaves was found”
t0“phosphate fertilizer on sunflower”
Claim · model-written summary
Phosphate fertilizer increased whole-day sunflower leaf net photosynthetic rate during filling.
- Taxon
- sunflowerHelianthus annuuse0
- Organ / stage
- leaves in the filling periode0
- Treatment
- phosphate fertilizere0
- Outcome
- whole-day net photosynthetic ratee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The application of phosphate fertilizer also increased the whole-day net photosynthetic rate of sunflower leaves in the filling period”
Claim · model-written summary
Phosphate treatments differed significantly from control in photosynthetic rate at 10:00 and 16:00.
- Taxon
- sunflowerHelianthus annuuse1
- Treatment
- phosphate fertilizer treatmentse0
- Outcome
- whole-day net photosynthetic ratee1
- Qualifier
- 10:00 and 16:00e0
- Comparator
- control(CK)e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there were significant differences between phosphate fertilizer treatments and the control(CK) in 10:00 and 16:00”
e1“whole-day net photosynthetic rate of sunflower leaves in the filling period”
Claim · model-written summary
Phosphate fertilizer enhanced sunflower harvest agronomic indicators.
- Taxon
- sunflowerHelianthus annuuse0
- Treatment
- phosphate fertilizere0
- Outcome
- harvest agronomic indicatorse0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the application of phosphate fertilizer enhanced the harvest agronomic indicators of sunflower”
Claim · model-written summary
Phosphate fertilizer significantly increased sunflower dry matter in various organs.
- Taxon
- sunflowerHelianthus annuuse0
- Organ / stage
- various organse0
- Treatment
- phosphate fertilizere1
- Outcome
- dry matter accumulatione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significantly increased the dry matter accumulation in various organs of sunflower”
e1“application of phosphate fertilizer enhanced”
Claim · model-written summary
Phosphorus at 180 kg/hm2 had the best growth and photosynthesis effect.
- Taxon
- sunflowerHelianthus annuuse0
- Treatment
- phosphorus reached 180 kg/hm2e0
- Outcome
- growth and photosynthesise0
- Direction
- beste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When the phosphorus reached 180 kg/hm2,it showed the best effect on the growth and photosynthesis of sunflower”
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