Abstract
Using four different types of rice varieties including Jinyou 527( indica hybrid rice),Changmi 011( indica inbred rice),Jiuyou 418( japonica hybrid rice) and Hexi 39( japonica inbred rice) as the materials,the effects of planting density were studied on the uptake characteristics of nitrogen,phosphorus and potassium nutrients under two different ecological conditions at Xichang and Ya'an. The results showed that the total nitrogen accumulation( TNA) and the total phosphorus accumulation( TPA) at maturity stage in Xichang were less than those in Ya'an,but the total potassium accumulation( TKA) at maturity stage in Xichang was slightly higher than that in Ya' an. The harvest index,use efficiency for grain production and use efficiency for biomass production of nitrogen,phosphorus and potassium in Xichang were significantly higher than those in Ya' an. With the planting density increased,the total accumulation of N,P and K increased at maturity stage. There was no significant difference for the nitrogen use efficiency for biomass production( NDMPE) among different planting density levels,but the harvest index and the use efficiency for grain production of nitrogen,phosphorus and potassium and the use efficiency for biomass production of phosphorus and potassium decreased with the density increased.
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Claims 8
Claim · model-written summary
Total nitrogen accumulation at maturity was lower in Xichang than Ya’an.
- Taxon
- rice
Oryza sativat0 - Outcome
- total nitrogen accumulation( TNA)e0
- Direction
- less thane0
- Comparator
- Ya'ane0
- Setting
- Xichange0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the total nitrogen accumulation( TNA) and the total phosphorus accumulation( TPA) at maturity stage in Xichang were less than those in Ya'an”
t0“Rice”
Claim · model-written summary
Total phosphorus accumulation at maturity was lower in Xichang than Ya’an.
- Taxon
- riceOryza sativat0
- Outcome
- total phosphorus accumulation( TPA)e0
- Direction
- less thane0
- Comparator
- Ya'ane0
- Setting
- Xichange0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the total nitrogen accumulation( TNA) and the total phosphorus accumulation( TPA) at maturity stage in Xichang were less than those in Ya'an”
t0“Rice”
Claim · model-written summary
Total potassium accumulation at maturity was slightly higher in Xichang than Ya’an.
- Taxon
- riceOryza sativat0
- Outcome
- total potassium accumulation( TKA)e0
- Direction
- highere0
- Comparator
- Ya' ane0
- Setting
- Xichange0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the total potassium accumulation( TKA) at maturity stage in Xichang was slightly higher than that in Ya' an”
t0“Rice”
Claim · model-written summary
Nutrient harvest index and grain and biomass production use efficiencies were significantly higher in Xichang.
- Taxon
- riceOryza sativat0
- Outcome
- harvest index,use efficiency for grain production and use efficiency for biomass production of nitrogen,phosphorus and potassiume0
- Direction
- highere0
- Comparator
- Ya' ane0
- Setting
- Xichange0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The harvest index,use efficiency for grain production and use efficiency for biomass production of nitrogen,phosphorus and potassium in Xichang were significantly higher than those in Ya' an”
t0“Rice”
Claim · model-written summary
Increasing planting density increased total N, P and K accumulation at maturity.
- Taxon
- riceOryza sativat0
- Treatment
- planting density increasede0
- Outcome
- total accumulation of N,P and Ke0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With the planting density increased,the total accumulation of N,P and K increased at maturity stage”
t0“Rice”
Claim · model-written summary
Nitrogen use efficiency for biomass production did not differ significantly among planting density levels.
- Taxon
- riceOryza sativat0
- Treatment
- different planting density levelse0
- Outcome
- nitrogen use efficiency for biomass production( NDMPE)e0
- Direction
- no significant differencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was no significant difference for the nitrogen use efficiency for biomass production( NDMPE) among different planting density levels”
t0“Rice”
Claim · model-written summary
Higher planting density decreased nutrient harvest index and grain production use efficiency.
- Taxon
- riceOryza sativat0
- Treatment
- density increasede0
- Outcome
- harvest index and the use efficiency for grain production of nitrogen,phosphorus and potassiume0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the harvest index and the use efficiency for grain production of nitrogen,phosphorus and potassium and the use efficiency for biomass production of phosphorus and potassium decreased with the density increased”
t0“Rice”
Claim · model-written summary
Higher planting density decreased phosphorus and potassium use efficiency for biomass production.
- Taxon
- riceOryza sativat0
- Treatment
- density increasede0
- Outcome
- use efficiency for biomass production of phosphorus and potassiume0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the harvest index and the use efficiency for grain production of nitrogen,phosphorus and potassium and the use efficiency for biomass production of phosphorus and potassium decreased with the density increased”
t0“Rice”
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See all 395 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.