Abstract
Field fertilizer experiments were conducted to st ud y K uptake, distribution and use efficiency of hybrid and conventional rice un der different low-K stress conditions. Results indicated that grain yield and t otal K uptake by rice increased, while K use efficiency of rice decreased signi ficantly, and interaction effect between cropping history and K application was also significant. The phase from panicle initiation to flowering was critical for K uptake by rice and more than half of the total plant K was accumulated du ring this phase. Total K uptake by hybrid rice Xieyou 46 was significantly highe r compared with conventional rice Xiushui 11 from high-K soil. However, the K use efficiency of Xieyou 46 was significantly lower compared with Xiushui 11 , indicating that hybrid rice possessed potassium luxury consumption character . Under K deficiency situation, K uptake by hybrid rice was less than that by co nventional rice, there was no significant difference between the two rice variet ies in K use efficiency. Resin capsule method was used to measure the dynamic s of soil bio-available K during rice growth period. It was found that the accu mulated K of rice was positively correlated with the adsorbed K of resin capsule s embedded in situ soil for 7 days.
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Claims 10
Claim · model-written summary
Potassium application increased rice grain yield.
- Taxon
- rice
Oryza sativat0 - Treatment
- Ke0
- Outcome
- grain yielde0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results indicated that grain yield and t otal K uptake by rice increased, while K use efficiency of rice decreased signi ficantly”
t0“Rice”
Claim · model-written summary
Potassium application increased total potassium uptake.
- Taxon
- riceOryza sativat0
- Treatment
- Ke0
- Outcome
- t otal K uptakee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results indicated that grain yield and t otal K uptake by rice increased, while K use efficiency of rice decreased signi ficantly”
t0“Rice”
Claim · model-written summary
Potassium use efficiency decreased significantly.
- Taxon
- riceOryza sativat0
- Treatment
- Ke0
- Outcome
- K use efficiencye0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results indicated that grain yield and t otal K uptake by rice increased, while K use efficiency of rice decreased signi ficantly”
t0“Rice”
Claim · model-written summary
Cropping history interacted significantly with potassium application.
- Taxon
- riceOryza sativat0
- Treatment
- K applicatione0
- Outcome
- interaction effect between cropping history and K applicatione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“interaction effect between cropping history and K application was also significant”
t0“Rice”
Claim · model-written summary
More than half of total plant potassium accumulated from panicle initiation to flowering.
- Taxon
- riceOryza sativat0
- Organ / stage
- panicle initiation to floweringe0
- Outcome
- total plant Ke0
- Value
- more than halfe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The phase from panicle initiation to flowering was critical for K uptake by rice and more than half of the total plant K was accumulated du ring this phase”
t0“Rice”
Claim · model-written summary
Xieyou 46 had higher potassium uptake than Xiushui 11 on high potassium soil.
- Taxon
- riceOryza sativat0
- Material
- Xieyou 46e0
- Outcome
- Total K uptakee0
- Direction
- highe re0
- Comparator
- Xiushui 11e0
- Setting
- high-K soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total K uptake by hybrid rice Xieyou 46 was significantly highe r compared with conventional rice Xiushui 11 from high-K soil”
t0“Rice”
Claim · model-written summary
Xieyou 46 had lower potassium use efficiency than Xiushui 11.
- Taxon
- riceOryza sativat0
- Material
- Xieyou 46e0
- Outcome
- K use efficiencye0
- Direction
- lowere0
- Comparator
- Xiushui 11e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the K use efficiency of Xieyou 46 was significantly lower compared with Xiushui 11”
t0“Rice”
Claim · model-written summary
Under potassium deficiency, hybrid rice absorbed less potassium than conventional rice.
- Taxon
- riceOryza sativat0
- Material
- hybrid ricee0
- Outcome
- K uptakee0
- Direction
- lesse0
- Qualifier
- K deficiency situatione0
- Comparator
- co nventional ricee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under K deficiency situation, K uptake by hybrid rice was less than that by co nventional rice”
t0“Rice”
Claim · model-written summary
Under potassium deficiency, rice varieties did not differ significantly in potassium use efficiency.
- Taxon
- riceOryza sativat0
- Material
- two rice variet iese0
- Outcome
- K use efficiencye0
- Direction
- no significant differencee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was no significant difference between the two rice variet ies in K use efficiency”
t0“Rice”
Claim · model-written summary
Plant potassium accumulation correlated positively with resin capsule potassium adsorption.
- Taxon
- riceOryza sativat0
- Outcome
- accu mulated K of ricee0
- Direction
- positively correlatede0
- Qualifier
- 7 dayse0
- Comparator
- adsorbed K of resin capsule se0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the accu mulated K of rice was positively correlated with the adsorbed K of resin capsule s embedded in situ soil for 7 days”
t0“Rice”
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See all 383 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.