Abstract
Various indexes should be considered when developing a suitable irrigation and drainage scheme for crops. Our study chosen tomato as plant material and conducted a field experiment under saline soils. Nine treatments distinguished by different irrigation quotas and different drain ditch depths were used for the optimization of irrigation-drainage scheme. A flooding irrigation treatment with no surface drainage was adopted as control. The system of evaluation indexes was established in comprehensive consideration of the electrical conductivity and nutrient of soil, and the water use efficiency, nitrogen use efficiency, quality and marketable yield of tomato. Moreover, the multi-index analysis and projection pursuit (PP) model were used to evaluate the irrigation-drainage schemes according to the observed values of these six evaluation indexes. Results showed that different irrigationdrainage treatments decreased the electrical conductivity in plough layer by 24.6-51.3%, and increased the tomato water use efficiency and nitrogen use efficiency by 0.3-24.2% and 20.3-96.0%, respectively. The tomato marketable yield was increased by 14.4-31.3% with the irrigation-drainage treatments when compared to the control. As analyzed by the PP model, I3D1 (300 m 3 hm -2 of irrigation quota combined with 10 cm of ditch depth) was the treatment that possessed best comprehensive benefits due to the highest projection value of 1.6724 thus was recommended by this study as the optimal irrigation-drainage scheme.
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Claims 6
Claim · model-written summary
Irrigation-drainage treatments reduced plough-layer electrical conductivity by 24.6-51.3%.
- Taxon
- tomato
Solanum lycopersicumt0 - Treatment
- different irrigationdrainage treatmentse0
- Outcome
- electrical conductivity in plough layere0
- Direction
- decreasede0
- Value
- 24.6-51.3%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato crop”
e0“different irrigationdrainage treatments decreased the electrical conductivity in plough layer by 24.6-51.3%”
Claim · model-written summary
The treatments increased tomato water use efficiency by 0.3-24.2%.
- Taxon
- tomatoSolanum lycopersicumt0
- Outcome
- tomato water use efficiencye0
- Direction
- increasede0
- Value
- 0.3-24.2%e0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato crop”
e0“increased the tomato water use efficiency and nitrogen use efficiency by 0.3-24.2% and 20.3-96.0%, respectively”
Claim · model-written summary
The treatments increased nitrogen use efficiency by 20.3-96.0%.
- Taxon
- tomatoSolanum lycopersicumt0
- Outcome
- nitrogen use efficiencye0
- Direction
- increasede0
- Value
- 20.3-96.0%e0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato crop”
e0“increased the tomato water use efficiency and nitrogen use efficiency by 0.3-24.2% and 20.3-96.0%, respectively”
Claim · model-written summary
The treatments raised marketable yield by 14.4-31.3% over control.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- irrigation-drainage treatmentse0
- Outcome
- tomato marketable yielde0
- Direction
- increasede0
- Value
- 14.4-31.3%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato crop”
e0“tomato marketable yield was increased by 14.4-31.3% with the irrigation-drainage treatments when compared to the control”
Claim · model-written summary
I3D1 achieved the highest projection value, 1.6724, and best comprehensive benefits.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- I3D1 (300 m 3 hm -2 of irrigation quota combined with 10 cm of ditch depth)e0
- Outcome
- comprehensive benefitse0
- Direction
- beste0
- Value
- 1.6724e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato crop”
e0“I3D1 (300 m 3 hm -2 of irrigation quota combined with 10 cm of ditch depth) was the treatment that possessed best comprehensive benefits due to the highest projection value of 1.6724”
Claim · model-written summary
The authors recommend I3D1 as the optimal irrigation-drainage scheme.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- I3D1 (300 m 3 hm -2 of irrigation quota combined with 10 cm of ditch depth)e0
- Outcome
- optimal irrigation-drainage schemee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato crop”
e0“I3D1 (300 m 3 hm -2 of irrigation quota combined with 10 cm of ditch depth) was the treatment that possessed best comprehensive benefits due to the highest projection value of 1.6724 thus was recommended by this study as the optimal irrigation-drainage scheme”
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