Abstract
Aims Row spacing is a cultivation technique used for many field crops,but not wheat,for which traditional row spacing of 20 cm is used regardless of spike-type wheat cultivar.Our objective was to examine the effects of row spacing on canopy structure,its microclimate and yield in heavy-ear winter wheat,Triticum aestivum.Methods We conducted a field experiment on the farm of National Engineering Research Center for Wheat,Zhengzhou,China,using heavy-ear winter wheat cultivar `Lankao Aizao 8'.Three row spacing treatments(15,20 and 30 cm)were used in a randomized complete block arrangement with three replications.Important findings Leaf area index decreased and canopy openness increased with increased row spacing.Moreover,light interception at different layers,extinction coefficient,and relative humidity decreased,canopy temperature at each layer increased,and the spread of carbon dioxide was unchanged.Yield could be increased by reducing row spacing to have an even plant-to-plant distribution that could weaken competition.Our finding that 15 cm row spacing was beneficial to canopy structure and yield indicated that heavy-ear winter wheat cultivar `Lankao Aizao 8' should not be planted in conventional 20 cm row spacing.
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Claims 7
Claim · model-written summary
Leaf area index decreased with wider rows.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- increased row spacinge0
- Outcome
- Leaf area indexe0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaf area index decreased and canopy openness increased with increased row spacing.”
t0“WINTER WHEAT”
Claim · model-written summary
Canopy openness increased with wider rows.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- increased row spacinge0
- Outcome
- canopy opennesse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaf area index decreased and canopy openness increased with increased row spacing.”
t0“WINTER WHEAT”
Claim · model-written summary
Light interception, extinction coefficient and relative humidity decreased with wider rows.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- light interception at different layers,extinction coefficient,and relative humiditye0
- Direction
- decreasede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“light interception at different layers,extinction coefficient,and relative humidity decreased,canopy temperature at each layer increased,and the spread of carbon dioxide was unchanged.”
t0“WINTER WHEAT”
Claim · model-written summary
Canopy temperature increased with wider rows.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- canopy temperature at each layere0
- Direction
- increasede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“canopy temperature at each layer increased”
t0“WINTER WHEAT”
Claim · model-written summary
Carbon dioxide spread was unchanged with wider rows.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- spread of carbon dioxidee0
- Direction
- unchangede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the spread of carbon dioxide was unchanged”
t0“WINTER WHEAT”
Claim · model-written summary
Reducing row spacing could increase wheat yield.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- reducing row spacinge0
- Outcome
- Yielde0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield could be increased by reducing row spacing to have an even plant-to-plant distribution that could weaken competition.”
t0“WINTER WHEAT”
Claim · model-written summary
The authors recommend against conventional 20 cm spacing for Lankao Aizao 8.
- Taxon
- wheatTriticum aestivume0
- Material
- Lankao Aizao 8e0
- Outcome
- should not be planted in conventional 20 cm row spacinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“heavy-ear winter wheat cultivar `Lankao Aizao 8' should not be planted in conventional 20 cm row spacing.”
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