Abstract
【Objective】The effects of planting density and potash fertilizer rate on the yield of Longshu 14 was explored to provide references for high yield cultivation. 【Method】Two-factor randomized block design was used to analyse effect of different densities(42.0,49.5,57.0,64.5 thousand plants/ha)and potassium fertilizer(0,150,300,450 kg/ha)on sweet potato traits and yield. 【Result 】 Density and potassium fertilizer were significant effect on the yield of fresh potato and dried potato,starch content,rate of tuber dry matter andrate oflargeand medium size of Longshu 14(P0.05). Under the same planting density( ≤ 57. 0 thousand plants / ha), the yield of fresh potato, dried potato, and dry matter content in-creased with potassium application increased. The yield of fresh potato and dried potato were increased with the density increasedin low potassium levels( ≤ 150 kg / ha). The yield of fresh potato and dried potato were increased first and then decreased with density increased in high potassium levels(≥300 kg/ha). High potassium fertilizer level in the lowdensity was beneficial to improve the yield of starch. There were differences rate of tuber dry matter among different potassium application,the yield of fresh potato and dry matter were the lowest in no potassium treatment,but rate of tuber dry matter was highest in the same treatment. The low-density and potassium fertilizer treatment were improved rate of largeand mediumsize of sweet potato,but the high-density and high level of potassium fertilizer decrease drate of large and medium sized of sweetpotato. The highest yield offresh potato and dried potato,starch content,was 51483.98,15555.75 and10251.24 kg/ha,respectively, under the conditions of available K(111.6 mg/kg) in soil moisture, planting density of57. 0 thousand plants/ha,urea 120 kg/ha,superphosphate 225 kg/ha,potassium 450 kg/ha. 【Conclusion 】The yield of sweet potato is increased by improving the planting density and the amount of potassium in a certain range. Commodity rate of sweet potato is increased by lower planting density and increase potassium fertilizer.
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Claims 16
Claim · model-written summary
Density and potassium fertilizer significantly affected fresh potato and dried potato yields.
- Taxon
- Longshu 14e0
- Treatment
- Density and potassium fertilizere0
- Outcome
- yield of fresh potato and dried potatoe0
Not reportedDirection
Verbatim
e0“Density and potassium fertilizer were significant effect on the yield of fresh potato and dried potato,starch content,rate of tuber dry matter andrate oflargeand medium size of Longshu 14(P0.05).”
Claim · model-written summary
Density and potassium fertilizer significantly affected starch content, tuber dry matter rate and rate of large and medium tubers.
- Taxon
- Longshu 14e0
- Treatment
- Density and potassium fertilizere0
- Outcome
- starch content,rate of tuber dry matter andrate oflargeand medium sizee0
Not reportedDirection
Verbatim
e0“Density and potassium fertilizer were significant effect on the yield of fresh potato and dried potato,starch content,rate of tuber dry matter andrate oflargeand medium size of Longshu 14(P0.05).”
Claim · model-written summary
At densities no greater than 57.0 thousand plants/ha, fresh and dried potato yields rose with potassium application.
- Taxon
- sweet potato
_Flower.jpg?width=60)
Ipomoea batatast0 - Treatment
- potassium applicatione0
- Outcome
- yield of fresh potato, dried potatoe0
- Direction
- in-creasede0
- Qualifier
- ≤ 57. 0 thousand plants / hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Flower.jpg?width=500)
Verbatim
e0“Under the same planting density( ≤ 57. 0 thousand plants / ha), the yield of fresh potato, dried potato, and dry matter content in-creased with potassium application increased.”
t0“sweet potato”
Claim · model-written summary
At densities no greater than 57.0 thousand plants/ha, dry matter content rose with potassium application.
- Taxon
- sweet potatoIpomoea batatast0
- Treatment
- potassium applicatione0
- Outcome
- dry matter contente0
- Direction
- in-creasede0
- Qualifier
- ≤ 57. 0 thousand plants / hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under the same planting density( ≤ 57. 0 thousand plants / ha), the yield of fresh potato, dried potato, and dry matter content in-creased with potassium application increased.”
t0“sweet potato”
Claim · model-written summary
At low potassium levels, fresh and dried potato yields increased with planting density.
- Taxon
- sweet potatoIpomoea batatast0
- Treatment
- densitye0
- Outcome
- yield of fresh potato and dried potatoe0
- Direction
- increasede0
- Qualifier
- ≤ 150 kg / hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield of fresh potato and dried potato were increased with the density increasedin low potassium levels( ≤ 150 kg / ha).”
t0“sweet potato”
Claim · model-written summary
At high potassium levels, fresh and dried potato yields first increased then declined with density.
- Taxon
- sweet potatoIpomoea batatast0
- Treatment
- densitye0
- Outcome
- yield of fresh potato and dried potatoe0
- Direction
- increased first and then decreasede0
- Qualifier
- ≥300 kg/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield of fresh potato and dried potato were increased first and then decreased with density increased in high potassium levels(≥300 kg/ha).”
t0“sweet potato”
Claim · model-written summary
High potassium at low density improved starch yield.
- Taxon
- sweet potatoIpomoea batatast0
- Treatment
- High potassium fertilizer levele0
- Outcome
- yield of starche0
- Direction
- improvee0
- Qualifier
- lowdensitye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“High potassium fertilizer level in the lowdensity was beneficial to improve the yield of starch.”
t0“sweet potato”
Claim · model-written summary
No potassium gave the lowest fresh potato yield and dry matter.
- Taxon
- sweet potatoIpomoea batatast0
- Treatment
- no potassium treatmente0
- Outcome
- yield of fresh potato and dry mattere0
- Direction
- loweste0
- Comparator
- different potassium applicatione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the yield of fresh potato and dry matter were the lowest in no potassium treatment”
t0“sweet potato”
e1“There were differences rate of tuber dry matter among different potassium application”
Claim · model-written summary
No potassium produced the highest tuber dry matter rate.
- Taxon
- sweet potatoIpomoea batatast0
- Outcome
- rate of tuber dry mattere0
- Direction
- higheste0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rate of tuber dry matter was highest in the same treatment.”
t0“sweet potato”
Claim · model-written summary
Low density with potassium increased the rate of large and medium sweet potatoes.
- Taxon
- sweet potatoIpomoea batatase0
- Treatment
- low-density and potassium fertilizer treatmente0
- Outcome
- rate of largeand mediumsize of sweet potatoe0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The low-density and potassium fertilizer treatment were improved rate of largeand mediumsize of sweet potato”
Claim · model-written summary
High density and high potassium decreased the rate of large and medium sweet potatoes.
- Taxon
- sweetpotatoIpomoea batatase0
- Treatment
- high-density and high level of potassium fertilizere0
- Outcome
- rate of large and medium sized of sweetpotatoe0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the high-density and high level of potassium fertilizer decrease drate of large and medium sized of sweetpotato.”
Claim · model-written summary
The highest fresh potato yield was 51483.98 kg/ha at the specified fertilizer and density combination.
- Taxon
- sweet potatoIpomoea batatast0
- Treatment
- planting density of57. 0 thousand plants/ha,urea 120 kg/ha,superphosphate 225 kg/ha,potassium 450 kg/hae0
- Outcome
- yield offresh potatoe0
- Direction
- higheste0
- Value
- 51483.98e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest yield offresh potato and dried potato,starch content,was 51483.98,15555.75 and10251.24 kg/ha,respectively, under the conditions of available K(111.6 mg/kg) in soil moisture, planting density of57. 0 thousand plants/ha,urea 120 kg/ha,superphosphate 225 kg/ha,potassium 450 kg/ha.”
t0“sweet potato”
Claim · model-written summary
The highest dried potato yield was 15555.75 kg/ha at the specified treatment combination.
- Taxon
- sweet potatoIpomoea batatast0
- Outcome
- dried potatoe0
- Direction
- higheste0
- Value
- 15555.75e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest yield offresh potato and dried potato,starch content,was 51483.98,15555.75 and10251.24 kg/ha,respectively, under the conditions of available K(111.6 mg/kg) in soil moisture, planting density of57. 0 thousand plants/ha,urea 120 kg/ha,superphosphate 225 kg/ha,potassium 450 kg/ha.”
t0“sweet potato”
Claim · model-written summary
The highest starch yield was 10251.24 kg/ha at the specified treatment combination.
- Taxon
- sweet potatoIpomoea batatast0
- Outcome
- starch contente0
- Direction
- higheste0
- Value
- 10251.24e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest yield offresh potato and dried potato,starch content,was 51483.98,15555.75 and10251.24 kg/ha,respectively, under the conditions of available K(111.6 mg/kg) in soil moisture, planting density of57. 0 thousand plants/ha,urea 120 kg/ha,superphosphate 225 kg/ha,potassium 450 kg/ha.”
t0“sweet potato”
Claim · model-written summary
The authors concluded that increasing density and potassium within a certain range increases sweet potato yield.
- Taxon
- sweet potatoIpomoea batatase0
- Treatment
- planting density and the amount of potassiume0
- Outcome
- yield of sweet potatoe0
- Direction
- increasede0
- Qualifier
- in a certain rangee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield of sweet potato is increased by improving the planting density and the amount of potassium in a certain range.”
Claim · model-written summary
The authors concluded that lower density with more potassium increases commodity rate.
- Taxon
- sweet potatoIpomoea batatase0
- Treatment
- lower planting density and increase potassium fertilizere0
- Outcome
- Commodity rate of sweet potatoe0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Commodity rate of sweet potato is increased by lower planting density and increase potassium fertilizer.”
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