Abstract
For studying the effects of water supply during grain filling stage on growth and yield of rice in cold region,Varieties Kenjiandao 5 and Kendao 12 were planted through potted planting in rainproof chamber.The soil water potential(SWP) was examined through negative pressure soil moisture meter.The main results are as follows: In intermittent irrigation at-8~-10 kPa of SWP during grain filling stage,panicle length and panicle weight of the two varieties increased,dry matter weight and leaf area of the two varieties decreased;panicle number of two varieties decreased,kernel setting rate,1000-grain weigh and economic yield of two varieties decreased.In unremitting irrigation at-18~-20 kPa and-28~-30 kPa of SWP during grain filling stage,panicle length of two varieties increased,panicle weight,dry matter weight and leaf area of two varieties decreased;panicles,kernel setting rate,1000-grain weigh and economic yield of two varieties decreased.Intermittent irrigation at-8~-10 kPa of SWP during grain filling stage could be used as irrigating index for reducing rice production cost and improving economic benefit in cold region.Unremitting irrigation below-18~-20 kPa of SWP during grain filling stage was not suitable.
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Claims 8
Claim · model-written summary
Intermittent irrigation at -8 to -10 kPa increased panicle length and weight in both varieties.
- Taxon
- rice
Oryza sativat0 - Treatment
- intermittent irrigation at-8~-10 kPa of SWPe0
- Outcome
- panicle length and panicle weighte0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In intermittent irrigation at-8~-10 kPa of SWP during grain filling stage,panicle length and panicle weight of the two varieties increased”
t0“rice”
Claim · model-written summary
Intermittent irrigation reduced dry matter weight and leaf area.
- Taxon
- riceOryza sativat0
- Treatment
- intermittent irrigation at-8~-10 kPa of SWPe1
- Outcome
- dry matter weight and leaf areae0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“dry matter weight and leaf area of the two varieties decreased”
e1“intermittent irrigation at-8~-10 kPa of SWP during grain filling stage”
t0“rice”
Claim · model-written summary
Intermittent irrigation reduced panicle number, kernel setting, grain weight and economic yield.
- Taxon
- riceOryza sativat0
- Treatment
- intermittent irrigation at-8~-10 kPa of SWPe1
- Outcome
- panicle numbere0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“panicle number of two varieties decreased,kernel setting rate,1000-grain weigh and economic yield of two varieties decreased”
e1“intermittent irrigation at-8~-10 kPa of SWP during grain filling stage”
t0“rice”
Claim · model-written summary
Continuous irrigation at both lower water potentials increased panicle length.
- Taxon
- riceOryza sativat0
- Treatment
- unremitting irrigation at-18~-20 kPa and-28~-30 kPa of SWPe0
- Outcome
- panicle lengthe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In unremitting irrigation at-18~-20 kPa and-28~-30 kPa of SWP during grain filling stage,panicle length of two varieties increased”
t0“rice”
Claim · model-written summary
Continuous irrigation at both lower water potentials reduced panicle weight, dry matter and leaf area.
- Taxon
- riceOryza sativat0
- Treatment
- unremitting irrigation at-18~-20 kPa and-28~-30 kPa of SWPe1
- Outcome
- panicle weight,dry matter weight and leaf areae0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“panicle weight,dry matter weight and leaf area of two varieties decreased”
e1“unremitting irrigation at-18~-20 kPa and-28~-30 kPa of SWP”
t0“rice”
Claim · model-written summary
Continuous irrigation at both lower water potentials reduced panicle count, kernel setting, grain weight and economic yield.
- Taxon
- riceOryza sativat0
- Treatment
- unremitting irrigation at-18~-20 kPa and-28~-30 kPa of SWPe1
- Outcome
- economic yielde0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“panicles,kernel setting rate,1000-grain weigh and economic yield of two varieties decreased”
e1“unremitting irrigation at-18~-20 kPa and-28~-30 kPa of SWP”
t0“rice”
Claim · model-written summary
The authors propose intermittent irrigation at -8 to -10 kPa to reduce cost and improve economic benefit.
- Taxon
- riceOryza sativat0
- Treatment
- Intermittent irrigation at-8~-10 kPa of SWPe0
- Outcome
- irrigating index for reducing rice production cost and improving economic benefite0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Intermittent irrigation at-8~-10 kPa of SWP during grain filling stage could be used as irrigating index for reducing rice production cost and improving economic benefit in cold region.”
t0“rice”
Claim · model-written summary
The authors advise against continuous irrigation below -18 to -20 kPa.
- Taxon
- riceOryza sativat0
- Outcome
- Unremitting irrigation below-18~-20 kPa of SWP during grain filling stage was not suitablee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Unremitting irrigation below-18~-20 kPa of SWP during grain filling stage was not suitable.”
t0“rice”
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