Abstract
【Objective】The objective of the study was to elucidate the most appropriate timing of fertilization to improve the utilization of Phosphatic【Method】Three-year-old‘Moldova' grapes were chosen astest materials.Dry matter accumulation,P uptake and utilization rate of phosphate fertilizer and fruit quality were investigated to evaluate the efficacy during three different phosphate fertilizer dressing timing,P1(shoot rapid-growth),P2(shoot rapid-growth and fruit expansion) and P3(shoot rapid-growth,fruit expansion and veraison).【Result】Compared to the control without P application,P treatments had a positive effect on the improvement of the dry matter accumulation,P uptake and utilization rate of phosphate fertiliz-er and fruit quality.Two times of fertilization showed the best effect on the grapes.The dry matter accumulation increased by 7.45% and 5.41% than that both in one time and three times of fertilization respec-tively; P absorption increased 15.38% and 8.72% respectively; Utilization rate of phosphate fertilizer increased 5.14% and 3.09% respectively.Twice fertilization had the highest average cluster weight,berrymass and total sugar content,and lowest total acid content.【Conclusion】Twice phosphate fertilizer top-dressing during the shoot rapid-growing period and fruit expansion period is a reasonable way to meet Pabsorption and to improve the utilization ratio of phosphate fertilizer in ‘Moldova' grapes.
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Claims 10
Claim · model-written summary
Phosphate treatments improved dry matter accumulation, P uptake, fertilizer utilization and fruit quality versus no P.
Verbatim
e0“Compared to the control without P application,P treatments had a positive effect on the improvement of the dry matter accumulation,P uptake and utilization rate of phosphate fertiliz-er and fruit quality.”
t0“grapes”
Claim · model-written summary
Two fertilizer dressings increased dry matter accumulation by 7.45% versus one dressing.
Verbatim
e0“The dry matter accumulation increased by 7.45% and 5.41% than that both in one time and three times of fertilization respec-tively;”
e1“Two times of fertilization showed the best effect on the grapes.”
t0“grapes”
Claim · model-written summary
Two fertilizer dressings increased dry matter accumulation by 5.41% versus three dressings.
Verbatim
e0“The dry matter accumulation increased by 7.45% and 5.41% than that both in one time and three times of fertilization respec-tively;”
e1“Two times of fertilization showed the best effect on the grapes.”
t0“grapes”
Claim · model-written summary
Two dressings increased P absorption by 15.38% versus one dressing and 8.72% versus three dressings.
- Taxon
- grapest0
- Treatment
- Two times of fertilizatione1
- Outcome
- P absorptione0
- Direction
- increasede0
- Value
- 15.38%e0
Not reportedComparator
Verbatim
e0“P absorption increased 15.38% and 8.72% respectively;”
e1“Two times of fertilization showed the best effect on the grapes.”
t0“grapes”
Claim · model-written summary
Two dressings increased P absorption by 8.72% versus three dressings.
- Taxon
- grapest0
- Treatment
- Two times of fertilizatione1
- Outcome
- P absorptione0
- Direction
- increasede0
- Value
- 8.72%e0
Not reportedComparator
Verbatim
e0“P absorption increased 15.38% and 8.72% respectively;”
e1“Two times of fertilization showed the best effect on the grapes.”
t0“grapes”
Claim · model-written summary
Two dressings increased phosphate fertilizer utilization by 5.14% versus one dressing.
- Taxon
- grapest0
- Treatment
- Two times of fertilizatione1
- Outcome
- Utilization rate of phosphate fertilizere0
- Direction
- increasede0
- Value
- 5.14%e0
Not reportedComparator
Verbatim
e0“Utilization rate of phosphate fertilizer increased 5.14% and 3.09% respectively.”
e1“Two times of fertilization showed the best effect on the grapes.”
t0“grapes”
Claim · model-written summary
Two dressings increased phosphate fertilizer utilization by 3.09% versus three dressings.
- Taxon
- grapest0
- Treatment
- Two times of fertilizatione1
- Outcome
- Utilization rate of phosphate fertilizere0
- Direction
- increasede0
- Value
- 3.09%e0
Not reportedComparator
Verbatim
e0“Utilization rate of phosphate fertilizer increased 5.14% and 3.09% respectively.”
e1“Two times of fertilization showed the best effect on the grapes.”
t0“grapes”
Claim · model-written summary
Twice fertilization produced the highest average cluster weight, berry mass and total sugar content.
- Taxon
- grapest0
- Treatment
- Twice fertilizatione0
- Outcome
- average cluster weight,berrymass and total sugar contente0
- Direction
- higheste0
Not reportedComparator
Verbatim
e0“Twice fertilization had the highest average cluster weight,berrymass and total sugar content”
t0“grapes”
Claim · model-written summary
Twice fertilization produced the lowest total acid content.
Not reportedComparator
Verbatim
e0“lowest total acid content”
e1“Twice fertilization”
t0“grapes”
Claim · model-written summary
The authors recommend two dressings during rapid shoot growth and fruit expansion.
Verbatim
e0“Twice phosphate fertilizer top-dressing during the shoot rapid-growing period and fruit expansion period is a reasonable way to meet Pabsorption and to improve the utilization ratio of phosphate fertilizer in ‘Moldova' grapes.”
t0“grapes”
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