Abstract
The objective of this research was to investigate effects of different seeding rates on soil water storage,development of winter wheat population,grain yield and water use efficiency under straw mulching and conventional conditions on dryland in Weibei Plateau from June 2012 to June 2013.The results showed that water storage at 0-3.6msoil layer was 105 mm higher under straw mulching than under conventional treatment at wheat sowing time,which was used by wheat after the jointing stage.In addition,wheat population size before heading stage was significantly influenced by seeding rate,but no differences were observed after heading.Wheat grain yield ranged from 2 841kg/hm2 to3 496kg/hm2,both seeding rate and mulching had no prominent effects on grain yield.However,a significant lower harvest index was observed under high seeding rate than middle and low seeding rates.The water use efficiency was lower by 11% under straw mulching than under conventional,which due to the significant higher water use by 20%.Therefore,seeding rate and mulching had no pronounced effects on wheat yield under tested weather condition,further studies are needed to comprehensively evaluate these effects under other weather conditions to establish rational managementpractice for dryland wheat.
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Claims 10
Claim · model-written summary
Straw mulching raised soil water storage at sowing by 105 mm over conventional treatment.
- Taxon
- Winter Wheat
Triticum aestivumt0 - Treatment
- straw mulchinge0
- Outcome
- water storage at 0-3.6msoil layere0
- Direction
- highere0
- Value
- 105 mme0
- Comparator
- conventional treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“water storage at 0-3.6msoil layer was 105 mm higher under straw mulching than under conventional treatment at wheat sowing time”
t0“Winter Wheat”
Claim · model-written summary
Wheat used the stored soil water after jointing.
- Taxon
- wheatTriticum aestivume0
- Outcome
- used by wheat after the jointing stagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“which was used by wheat after the jointing stage”
Claim · model-written summary
Seeding rate significantly influenced wheat population size before heading.
- Taxon
- wheatTriticum aestivume0
- Organ / stage
- before heading stagee0
- Treatment
- seeding ratee0
- Outcome
- wheat population sizee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat population size before heading stage was significantly influenced by seeding rate”
Claim · model-written summary
Seeding rate produced no observed population size differences after heading.
- Taxon
- wheatTriticum aestivume0
- Organ / stage
- after headinge0
- Treatment
- seeding ratee0
- Outcome
- wheat population sizee0
- Direction
- no differencese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat population size before heading stage was significantly influenced by seeding rate,but no differences were observed after heading”
Claim · model-written summary
Wheat grain yield ranged from 2 841 to 3 496 kg/hm2.
- Taxon
- WheatTriticum aestivume0
- Outcome
- grain yielde0
- Value
- 2 841kg/hm2 to3 496kg/hm2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat grain yield ranged from 2 841kg/hm2 to3 496kg/hm2”
Claim · model-written summary
Seeding rate had no prominent effect on grain yield.
- Taxon
- Winter WheatTriticum aestivumt0
- Treatment
- seeding ratee0
- Outcome
- grain yielde0
- Direction
- no prominent effectse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both seeding rate and mulching had no prominent effects on grain yield”
t0“Winter Wheat”
Claim · model-written summary
Mulching had no prominent effect on grain yield.
- Taxon
- Winter WheatTriticum aestivumt0
- Treatment
- mulchinge0
- Outcome
- grain yielde0
- Direction
- no prominent effectse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both seeding rate and mulching had no prominent effects on grain yield”
t0“Winter Wheat”
Claim · model-written summary
High seeding rate significantly lowered harvest index relative to middle and low rates.
- Taxon
- Winter WheatTriticum aestivumt0
- Treatment
- high seeding ratee0
- Outcome
- harvest indexe0
- Direction
- lowere0
- Comparator
- middle and low seeding ratese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a significant lower harvest index was observed under high seeding rate than middle and low seeding rates”
t0“Winter Wheat”
Claim · model-written summary
Straw mulching lowered water use efficiency by 11% relative to conventional treatment.
- Taxon
- Winter WheatTriticum aestivumt0
- Treatment
- straw mulchinge0
- Outcome
- water use efficiencye0
- Direction
- lowere0
- Value
- 11%e0
- Comparator
- conventionale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The water use efficiency was lower by 11% under straw mulching than under conventional”
t0“Winter Wheat”
Claim · model-written summary
Straw mulching increased water use by 20% relative to conventional treatment.
- Taxon
- Winter WheatTriticum aestivumt0
- Treatment
- straw mulchinge0
- Outcome
- water usee0
- Direction
- highere0
- Value
- 20%e0
- Comparator
- conventionale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under straw mulching than under conventional,which due to the significant higher water use by 20%”
t0“Winter Wheat”
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