Abstract
From 1996 to 1997,the field experiments on the ratio of basal and tillering N fertilizer applied in early growth stage to Panicle-spikelet N fertilizer applied in late growth stage with SHANYOU 63 and YANJING 187 were carried out ,and the effects of N fertilizer application on Canopy Apparent Photosynthesis (CAP) ,single stem-sheath weight and export percentage of stem and sheath matter were studied. The results indicated that CAP decreased gradually with crop development during ripening stage. The optimum ratio of N fertilizer applied in early and late growth stage was 6 4,it had higher CAP than other treatments. The changes of stem and sheath weight showed a single peak curve after heading, minimum weight occured around 23 days after heading. The maximun export percentage of rice was the third stem and sheath from top. The CAP correlated positively with yield and population quality index at ripening stage except at 23 days, perhaps something has to be done with plenty of matter export from stem and sheath at this moment.
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Claims 4
Claim · model-written summary
CAP decreased during ripening.
- Taxon
- Rice
Oryza sativat0 - Outcome
- CAPe0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CAP decreased gradually with crop development during ripening stage”
t0“Rice”
Claim · model-written summary
The 6 4 nitrogen ratio had higher CAP than other treatments.
- Taxon
- RiceOryza sativat0
- Treatment
- ratio of N fertilizer applied in early and late growth stage was 6 4e0
- Outcome
- CAPe0
- Direction
- highere0
- Comparator
- other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The optimum ratio of N fertilizer applied in early and late growth stage was 6 4,it had higher CAP than other treatments”
t0“Rice”
Claim · model-written summary
Stem and sheath weight followed a single peak curve.
- Taxon
- RiceOryza sativat0
- Outcome
- stem and sheath weighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“stem and sheath weight showed a single peak curve after heading, minimum weight occured around 23 days after heading”
t0“Rice”
Claim · model-written summary
CAP correlated positively with yield and population quality index.
- Taxon
- RiceOryza sativat0
- Organ / stage
- ripening stagee0
- Outcome
- yield and population quality indexe0
- Direction
- positivelye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The CAP correlated positively with yield and population quality index at ripening stage except at 23 days”
t0“Rice”
The same questions in other papers
stage · physiology: photosynthesis · Oryza sativa (rice)Positive and negative results
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- no effect
- negative
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- negative
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See all 83 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.