Abstract
In order to determine the wheat straw residue amount and the nitrogen fertilizer amount in the dry land,different amounts of straws returned to field and nitrogen treatments were set up in Qingdao agriculture university Jiaozhou experiment stations.We researched the effects of precise straw returned quantity and nitrogen fertilizer treatments on winter wheat photosynthetic characteristics and yield.The results showed that compared with only nitrogen fertilizer treatment,right amounts of straws returned to field can improve winter wheat chlorophyll SPAD value obviously,delay senescence of flag leaf,improve the photosynthetic performance of flag leaf and increase the 1000-seed weight.In the same level of the straw returned to N2 level of the flag leaf senescence winter wheat slowly,and photosynthesis prolonged,the yield was increased significantly.Straw returned 9 000 kg/ha(J3)under 225 kg/ha(N2) nitrogen can delay senescence of flag leaf,improve the photosynthetic performance of flag leaf,reduce stomatal conductance and increase the 1000-seed weight obviously compared with other process,however,wheat straw reduced the wheat effective panicles.The experimental results showed that straw returned 9 000 kg/ha under 225 kg/ha nitrogen dosage had the most obvious effect on improving photosynthesis of flag leaves.So the N2J3 treatment is the optimal choice in the locality.
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Claims 11
Claim · model-written summary
Appropriate straw return improved flag-leaf chlorophyll SPAD value relative to nitrogen alone.
- Taxon
- winter wheat
Triticum aestivume0 - Treatment
- right amounts of straws returned to fielde0
- Outcome
- chlorophyll SPAD valuee0
- Direction
- improvee0
- Comparator
- only nitrogen fertilizer treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“compared with only nitrogen fertilizer treatment,right amounts of straws returned to field can improve winter wheat chlorophyll SPAD value obviously”
Claim · model-written summary
Appropriate straw return delayed flag-leaf senescence and improved photosynthetic performance.
- Taxon
- winter wheatTriticum aestivume0
- Treatment
- right amounts of straws returned to fielde0
- Outcome
- senescence of flag leaf,improve the photosynthetic performance of flag leafe0
- Direction
- improvee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“right amounts of straws returned to field can improve winter wheat chlorophyll SPAD value obviously,delay senescence of flag leaf,improve the photosynthetic performance of flag leaf”
Claim · model-written summary
Appropriate straw return increased 1000-seed weight.
- Taxon
- winter wheatTriticum aestivume0
- Treatment
- right amounts of straws returned to fielde0
- Outcome
- 1000-seed weighte0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“right amounts of straws returned to field can improve winter wheat chlorophyll SPAD value obviously,delay senescence of flag leaf,improve the photosynthetic performance of flag leaf and increase the 1000-seed weight”
Claim · model-written summary
At N2 nitrogen, straw return slowed flag-leaf senescence and prolonged photosynthesis.
- Taxon
- winter wheatTriticum aestivume0
- Treatment
- N2 levele0
- Outcome
- flag leaf senescence winter wheat slowly,and photosynthesis prolongede0
- Direction
- prolongede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the same level of the straw returned to N2 level of the flag leaf senescence winter wheat slowly,and photosynthesis prolonged”
Claim · model-written summary
Yield increased significantly at N2 nitrogen with straw return.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- N2e0
- Outcome
- yielde0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the same level of the straw returned to N2 level of the flag leaf senescence winter wheat slowly,and photosynthesis prolonged,the yield was increased significantly”
t0“Winter Wheat”
Claim · model-written summary
J3 straw return at N2 nitrogen delayed flag-leaf senescence.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Straw returned 9 000 kg/ha(J3)under 225 kg/ha(N2) nitrogene0
- Outcome
- senescence of flag leafe0
- Direction
- delaye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Straw returned 9 000 kg/ha(J3)under 225 kg/ha(N2) nitrogen can delay senescence of flag leaf”
t0“Winter Wheat”
Claim · model-written summary
J3 at N2 improved flag-leaf photosynthetic performance.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Straw returned 9 000 kg/ha(J3)under 225 kg/ha(N2) nitrogene0
- Outcome
- photosynthetic performance of flag leafe0
- Direction
- improvee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Straw returned 9 000 kg/ha(J3)under 225 kg/ha(N2) nitrogen can delay senescence of flag leaf,improve the photosynthetic performance of flag leaf”
t0“Winter Wheat”
Claim · model-written summary
J3 at N2 reduced stomatal conductance.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Straw returned 9 000 kg/ha(J3)under 225 kg/ha(N2) nitrogene0
- Outcome
- stomatal conductancee0
- Direction
- reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Straw returned 9 000 kg/ha(J3)under 225 kg/ha(N2) nitrogen can delay senescence of flag leaf,improve the photosynthetic performance of flag leaf,reduce stomatal conductance”
t0“Winter Wheat”
Claim · model-written summary
J3 at N2 increased 1000-seed weight compared with other treatments.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Straw returned 9 000 kg/ha(J3)under 225 kg/ha(N2) nitrogene0
- Outcome
- 1000-seed weighte0
- Direction
- increasee0
- Comparator
- other processe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Straw returned 9 000 kg/ha(J3)under 225 kg/ha(N2) nitrogen can delay senescence of flag leaf,improve the photosynthetic performance of flag leaf,reduce stomatal conductance and increase the 1000-seed weight obviously compared with other process”
t0“Winter Wheat”
Claim · model-written summary
Wheat straw reduced effective panicles.
- Taxon
- wheatTriticum aestivume0
- Treatment
- wheat strawe0
- Outcome
- effective paniclese0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat straw reduced the wheat effective panicles”
Claim · model-written summary
N2J3 was recommended as the local optimal choice.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- N2J3 treatment is the optimal choicee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“So the N2J3 treatment is the optimal choice in the locality”
t0“Winter Wheat”
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