Abstract
Abstract Crop yield is limited by water and nitrogen (N) availability. However, in Hexi Corridor of northwestern China, water scarcity and excessive fertilizer N in wheat ( Triticum aestivum L.) production causes serious conflicts between water and N supply and crop demand. A field experiment was conducted from 2016 to 2018 to evaluate whether reducing of irrigation and fertilizer N will reduce grain yield of wheat. There were two irrigation quotas (192 and 240 mm) and three fertilizer N rates (135, 180, and 225 kg N ha −1 ). The results showed that reducing irrigation to 192 mm and N rate to 180 kg N ha −1 reduced water uptake, water uptake efficiency, and N uptake of spring wheat as compared to local practice (i.e., 240 mm irrigation and 225 kg N ha −1 fertilizer). Whereas, it improved water and N utilization efficiency, and water and N productivity. Consequently, the irrigation and N rate reduced treatment achieved the same quantity of grain yield as local practice. The path analysis showed that interaction effect between irrigation and N fertilization may attributable to the improvement of grain yield with lower irrigation and N rate. The enhanced water and N utilization allows us to conclude that irrigation quota at 192 mm coupled with fertilizer N rate at 180 kg N ha −1 can be used as an efficient practice for wheat production in arid irrigation areas.
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Claims 8
Claim · model-written summary
Reduced irrigation and nitrogen reduced water uptake in wheat.
- Taxon
- wheat
Triticum aestivume7 - Treatment
- reducing irrigation to 192 mm and N rate to 180 kg N ha −1e0
- Outcome
- water uptakee0
- Direction
- reducede0
- Comparator
- local practicee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reducing irrigation to 192 mm and N rate to 180 kg N ha −1 reduced water uptake, water uptake efficiency, and N uptake of spring wheat as compared to local practice (i.e., 240 mm irrigation and 225 kg N ha −1 fertilizer)”
e7“wheat ( Triticum aestivum L.) production”
Claim · model-written summary
Reduced irrigation and nitrogen reduced water uptake efficiency in wheat.
- Taxon
- wheatTriticum aestivume7
- Treatment
- reducing irrigation to 192 mm and N rate to 180 kg N ha −1e0
- Outcome
- water uptake efficiencye0
- Direction
- reducede0
- Comparator
- local practicee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reducing irrigation to 192 mm and N rate to 180 kg N ha −1 reduced water uptake, water uptake efficiency, and N uptake of spring wheat as compared to local practice (i.e., 240 mm irrigation and 225 kg N ha −1 fertilizer)”
e7“wheat ( Triticum aestivum L.) production”
Claim · model-written summary
Reduced irrigation and nitrogen reduced N uptake in wheat.
- Taxon
- wheatTriticum aestivume7
- Treatment
- reducing irrigation to 192 mm and N rate to 180 kg N ha −1e0
- Outcome
- N uptakee0
- Direction
- reducede0
- Comparator
- local practicee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reducing irrigation to 192 mm and N rate to 180 kg N ha −1 reduced water uptake, water uptake efficiency, and N uptake of spring wheat as compared to local practice (i.e., 240 mm irrigation and 225 kg N ha −1 fertilizer)”
e7“wheat ( Triticum aestivum L.) production”
Claim · model-written summary
Reduced irrigation and nitrogen improved water and N utilization efficiency in wheat.
- Taxon
- wheatTriticum aestivume7
- Outcome
- water and N utilization efficiencye0
- Direction
- improvede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it improved water and N utilization efficiency, and water and N productivity”
e7“wheat ( Triticum aestivum L.) production”
Claim · model-written summary
Reduced irrigation and nitrogen improved water and N productivity in wheat.
- Taxon
- wheatTriticum aestivume7
- Outcome
- water and N productivitye0
- Direction
- improvede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it improved water and N utilization efficiency, and water and N productivity”
e7“wheat ( Triticum aestivum L.) production”
Claim · model-written summary
Reduced irrigation and nitrogen same quantity grain yield in wheat.
- Taxon
- wheatTriticum aestivume7
- Treatment
- irrigation and N rate reduced treatmente0
- Outcome
- grain yielde0
- Direction
- same quantitye0
- Comparator
- local practicee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the irrigation and N rate reduced treatment achieved the same quantity of grain yield as local practice”
e7“wheat ( Triticum aestivum L.) production”
Claim · model-written summary
The irrigation by nitrogen interaction was linked to grain yield improvement at lower inputs.
- Taxon
- wheatTriticum aestivume7
- Treatment
- irrigation and N fertilizatione0
- Outcome
- improvement of grain yielde0
- Direction
- improvemente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“interaction effect between irrigation and N fertilization may attributable to the improvement of grain yield with lower irrigation and N rate”
e7“wheat ( Triticum aestivum L.) production”
Claim · model-written summary
The authors recommend 192 mm irrigation with 180 kg N ha −1 fertilizer for wheat production in arid areas.
- Taxon
- wheatTriticum aestivume0
- Treatment
- irrigation quota at 192 mm coupled with fertilizer N rate at 180 kg N ha −1e0
- Outcome
- efficient practice for wheat productione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“irrigation quota at 192 mm coupled with fertilizer N rate at 180 kg N ha −1 can be used as an efficient practice for wheat production in arid irrigation areas”
The same questions in other papers
irrigation · yield · Triticum aestivum (wheat)Positive and negative results
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- positive
- negative
- no effect
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See all 989 papers →nitrogen · yield · Triticum aestivum (wheat)Positive and negative results
1,736 papers in the same direction as this paper · 285 in the opposite direction · 39 reporting no difference from an alternative
- no effect
- positive
- positive
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See all 2,061 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.