Abstract
Experiments were conducted to study the effects different fertilization rate on the yields of sunflower growing in saline and alkali soil and to establish a functional equation of fertilizer efficiency.The results show that for the alkali soil: if nitrogen reached 10.56 kg/667m2,the production reached the maximum 183.2 kg/667m2;and if the phosphorus reached 5.71 kg/667m2,the production reached the maximum 156.9 kg/667m2;and for the saline soil: if nitrogen reached 10.51 kg/667m2,the production reached the maximum 222.6 kg/667m2;and if the phosphorus reached 5.78 kg/667m2,the production reached the maximum 195.8 kg/667m2.Therefore: for the maximum production,the fertilization ratio among nitrogen,phosphate,and potash is 10.51∶5.78∶3,while the best economic yield's fertilization ratio among nitrogen,phosphate,and potash is 7.47∶4.49∶3.
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Claims 6
Claim · model-written summary
In alkali soil, sunflower production reached its maximum, 183.2 kg/667m2, at 10.56 kg/667m2 nitrogen.
- Taxon
- sunflower
Helianthus annuust0 - Treatment
- nitrogen reached 10.56 kg/667m2e1
- Outcome
- productione1
- Direction
- maximume1
- Value
- 183.2 kg/667m2e1
- Setting
- alkali soile1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“yields of sunflower”
e1“for the alkali soil: if nitrogen reached 10.56 kg/667m2,the production reached the maximum 183.2 kg/667m2”
Claim · model-written summary
In alkali soil, sunflower production reached its maximum, 156.9 kg/667m2, at 5.71 kg/667m2 phosphorus.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- phosphorus reached 5.71 kg/667m2e2
- Outcome
- productione2
- Direction
- maximume2
- Value
- 156.9 kg/667m2e2
- Setting
- alkali soile1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“yields of sunflower”
e1“for the alkali soil: if nitrogen reached 10.56 kg/667m2,the production reached the maximum 183.2 kg/667m2”
e2“if the phosphorus reached 5.71 kg/667m2,the production reached the maximum 156.9 kg/667m2”
Claim · model-written summary
In saline soil, sunflower production reached its maximum, 222.6 kg/667m2, at 10.51 kg/667m2 nitrogen.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- nitrogen reached 10.51 kg/667m2e3
- Outcome
- productione3
- Direction
- maximume3
- Value
- 222.6 kg/667m2e3
- Setting
- saline soile3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“yields of sunflower”
e3“for the saline soil: if nitrogen reached 10.51 kg/667m2,the production reached the maximum 222.6 kg/667m2”
Claim · model-written summary
In saline soil, sunflower production reached its maximum, 195.8 kg/667m2, at 5.78 kg/667m2 phosphorus.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- phosphorus reached 5.78 kg/667m2e4
- Outcome
- productione4
- Direction
- maximume4
- Value
- 195.8 kg/667m2e4
- Setting
- saline soile3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“yields of sunflower”
e3“for the saline soil: if nitrogen reached 10.51 kg/667m2,the production reached the maximum 222.6 kg/667m2”
e4“if the phosphorus reached 5.78 kg/667m2,the production reached the maximum 195.8 kg/667m2”
Claim · model-written summary
For maximum production, the nitrogen, phosphate and potash fertilization ratio is 10.51∶5.78∶3.
- Taxon
- sunflowerHelianthus annuust0
- Outcome
- fertilization ratioe5
- Value
- 10.51∶5.78∶3e5
- Qualifier
- for the maximum productione5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“yields of sunflower”
e5“for the maximum production,the fertilization ratio among nitrogen,phosphate,and potash is 10.51∶5.78∶3”
Claim · model-written summary
For the best economic yield, the nitrogen, phosphate and potash fertilization ratio is 7.47∶4.49∶3.
- Taxon
- sunflowerHelianthus annuust0
- Outcome
- fertilization ratioe6
- Value
- 7.47∶4.49∶3e6
- Qualifier
- best economic yielde6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“yields of sunflower”
e6“the best economic yield's fertilization ratio among nitrogen,phosphate,and potash is 7.47∶4.49∶3”
The same questions in other papers
phosphorus · yield · Helianthus annuus (common sunflower)Results differ
78 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- no effect
- positive
77 papers more in this group
See all 81 papers →nitrogen · yield · Helianthus annuus (common sunflower)Positive and negative results
181 papers in the same direction as this paper · 10 in the opposite direction · 4 reporting no difference from an alternative
- negative
- no effect
- negative
192 papers more in this group
See all 196 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.