Abstract
【Objective】To ascertain the root properties of hybrid rice and mechanism of increasing yield under different tillage system.【Method】 The effects of no-tillage(NT)and conventional tillage(CT)on root properties and yield of direct broadcasted(DB)hybrid rice and raise seedlings and transplanted(RT)hybrid rice on the conditions of field experiments were studied.【Results】 The results showed that the root/shoot ratio,root dry weight,root absorbing surface area and root active absorbing surface in NT at maximum tillering stage were higher than those in CT.Furthermore,the root weight and root weight density in 0-5 cm soil layer and the specific root length in 5-10 cm and 10-20 cm soil layer of NT at mature stage were higher than those of CT no matter which rice establish method was adopted.The root length and root length density and root surface area in 0-5 cm soil layer of NT at mature stage were higher than those of CT,and also the total 32P activity absorbed by rice roots and oxidation ability of rice roots of NT riceat maximum stage were 40.72% and 13.81% higher than those of CT on the average in RT,respectively.In DB condition,the total 32P activity absorbed by roots and the root oxidation ability in NT at maximum stage,booting stage and full heading stage were 54.56% and 12.59%,19.53% and 24.06%,2.80% and 74.19% higher than those of CT on the average,respectively.In addition,the partitioning of 32P absorbed by root into aerial parts in NT rice at booting stage was 13.78% higher than that of CT on the average,while the root residual rate of 32P in NT at the same stage was 6.84% lower than that in CT rice on the average.The effective panicle in NT was lower than that in CT,while the spikelet number per panicle in NT was higher than that in CT no matter which rice establish method was adopted.The rice yield of NT rice reached to 8979.0 kg·ha-1and 8588.0 kg·ha-1,increasing by 2.30%,1.19%,compared with CT on the average on DB and RT condition,respectively,although the difference was not significant between CT and RT.【Conclusion】 The rice yield superiority in NT was obvious compared with in CT,which was the reaction of good root properties in NT.
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Claims 19
Claim · model-written summary
No-tillage increased root/shoot ratio, root dry weight, root absorbing surface area and root active absorbing surface at maximum tillering.
- Taxon
- hybrid rice
Oryza sativat0 - Organ / stage
- maximum tillering stagee0
- Treatment
- NTe0
- Outcome
- root/shoot ratio,root dry weight,root absorbing surface area and root active absorbing surfacee0
- Direction
- highere0
- Comparator
- CTe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the root/shoot ratio,root dry weight,root absorbing surface area and root active absorbing surface in NT at maximum tillering stage were higher than those in CT”
t0“Hybrid Rice”
Claim · model-written summary
No-tillage increased mature root weight and root weight density in 0-5 cm soil regardless of establishment method.
- Taxon
- hybrid riceOryza sativat0
- Treatment
- NTe0
- Outcome
- root weight and root weight densitye0
- Direction
- highere0
- Qualifier
- 0-5 cm soil layere0
- Comparator
- CTe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the root weight and root weight density in 0-5 cm soil layer and the specific root length in 5-10 cm and 10-20 cm soil layer of NT at mature stage were higher than those of CT no matter which rice establish method was adopted”
t0“Hybrid Rice”
Claim · model-written summary
No-tillage increased specific root length in the 5-10 and 10-20 cm soil layers at maturity.
- Taxon
- hybrid riceOryza sativat0
- Treatment
- NTe0
- Outcome
- specific root lengthe0
- Direction
- highere0
- Qualifier
- 5-10 cm and 10-20 cm soil layere0
- Comparator
- CTe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the specific root length in 5-10 cm and 10-20 cm soil layer of NT at mature stage were higher than those of CT no matter which rice establish method was adopted”
t0“Hybrid Rice”
Claim · model-written summary
In RT rice, no-tillage increased mature root length, root length density and root surface area in 0-5 cm soil.
- Taxon
- Hybrid RiceOryza sativat0
- Treatment
- NTe0
- Outcome
- root length and root length density and root surface areae0
- Direction
- highere0
- Qualifier
- 0-5 cm soil layere0
- Comparator
- CTe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The root length and root length density and root surface area in 0-5 cm soil layer of NT at mature stage were higher than those of CT”
t0“Hybrid Rice”
Claim · model-written summary
Under RT, no-tillage increased root 32P uptake activity by 40.72% at maximum tillering.
- Taxon
- riceOryza sativae0
- Treatment
- NTe0
- Outcome
- total 32P activity absorbed by rice rootse0
- Direction
- highere0
- Value
- 40.72%e0
- Comparator
- CTe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the total 32P activity absorbed by rice roots and oxidation ability of rice roots of NT riceat maximum stage were 40.72% and 13.81% higher than those of CT on the average in RT,respectively”
Claim · model-written summary
Under RT, no-tillage increased root oxidation ability by 13.81% at maximum tillering.
- Taxon
- riceOryza sativae0
- Treatment
- NTe0
- Outcome
- oxidation ability of rice rootse0
- Direction
- highere0
- Value
- 13.81%e0
- Comparator
- CTe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“oxidation ability of rice roots of NT riceat maximum stage were 40.72% and 13.81% higher than those of CT on the average in RT,respectively”
Claim · model-written summary
Under DB, no-tillage increased total root 32P uptake activity by 54.56% at maximum tillering.
- Taxon
- hybrid riceOryza sativat0
- Organ / stage
- maximum stagee0
- Treatment
- NTe0
- Outcome
- total 32P activity absorbed by rootse0
- Direction
- highere0
- Value
- 54.56%e0
- Comparator
- CTe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In DB condition,the total 32P activity absorbed by roots and the root oxidation ability in NT at maximum stage,booting stage and full heading stage were 54.56% and 12.59%,19.53% and 24.06%,2.80% and 74.19% higher than those of CT on the average,respectively.”
t0“Hybrid Rice”
Claim · model-written summary
Under DB, no-tillage increased root oxidation ability by 12.59% at maximum tillering.
- Taxon
- hybrid riceOryza sativat0
- Organ / stage
- maximum stagee0
- Treatment
- NTe0
- Outcome
- root oxidation abilitye0
- Direction
- highere0
- Value
- 12.59%e0
- Comparator
- CTe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In DB condition,the total 32P activity absorbed by roots and the root oxidation ability in NT at maximum stage,booting stage and full heading stage were 54.56% and 12.59%,19.53% and 24.06%,2.80% and 74.19% higher than those of CT on the average,respectively.”
t0“Hybrid Rice”
Claim · model-written summary
Under DB, no-tillage increased root 32P uptake activity by 19.53% at booting.
- Taxon
- hybrid riceOryza sativat0
- Organ / stage
- booting stagee0
- Treatment
- NTe0
- Outcome
- total 32P activity absorbed by rootse0
- Direction
- highere0
- Value
- 19.53%e0
- Comparator
- CTe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In DB condition,the total 32P activity absorbed by roots and the root oxidation ability in NT at maximum stage,booting stage and full heading stage were 54.56% and 12.59%,19.53% and 24.06%,2.80% and 74.19% higher than those of CT on the average,respectively.”
t0“Hybrid Rice”
Claim · model-written summary
Under DB, no-tillage increased root oxidation ability by 24.06% at booting.
- Taxon
- hybrid riceOryza sativat0
- Organ / stage
- booting stagee0
- Treatment
- NTe0
- Outcome
- root oxidation abilitye0
- Direction
- highere0
- Value
- 24.06%e0
- Comparator
- CTe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In DB condition,the total 32P activity absorbed by roots and the root oxidation ability in NT at maximum stage,booting stage and full heading stage were 54.56% and 12.59%,19.53% and 24.06%,2.80% and 74.19% higher than those of CT on the average,respectively.”
t0“Hybrid Rice”
Claim · model-written summary
Under DB, no-tillage increased root 32P uptake activity by 2.80% at full heading.
- Taxon
- hybrid riceOryza sativat0
- Organ / stage
- full heading stagee0
- Treatment
- NTe0
- Outcome
- total 32P activity absorbed by rootse0
- Direction
- highere0
- Value
- 2.80%e0
- Comparator
- CTe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In DB condition,the total 32P activity absorbed by roots and the root oxidation ability in NT at maximum stage,booting stage and full heading stage were 54.56% and 12.59%,19.53% and 24.06%,2.80% and 74.19% higher than those of CT on the average,respectively.”
t0“Hybrid Rice”
Claim · model-written summary
Under DB, no-tillage increased root oxidation ability by 74.19% at full heading.
- Taxon
- hybrid riceOryza sativat0
- Organ / stage
- full heading stagee0
- Treatment
- NTe0
- Outcome
- root oxidation abilitye0
- Direction
- highere0
- Value
- 74.19%e0
- Comparator
- CTe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In DB condition,the total 32P activity absorbed by roots and the root oxidation ability in NT at maximum stage,booting stage and full heading stage were 54.56% and 12.59%,19.53% and 24.06%,2.80% and 74.19% higher than those of CT on the average,respectively.”
t0“Hybrid Rice”
Claim · model-written summary
No-tillage increased partitioning of absorbed 32P into aerial parts by 13.78% at booting.
- Taxon
- riceOryza sativae0
- Treatment
- NTe0
- Outcome
- partitioning of 32P absorbed by root into aerial partse0
- Direction
- highere0
- Value
- 13.78%e0
- Comparator
- CTe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the partitioning of 32P absorbed by root into aerial parts in NT rice at booting stage was 13.78% higher than that of CT on the average”
Claim · model-written summary
No-tillage reduced root residual 32P rate by 6.84% at booting.
- Taxon
- riceOryza sativae0
- Treatment
- NTe0
- Outcome
- root residual rate of 32Pe0
- Direction
- lowere0
- Value
- 6.84%e0
- Comparator
- CTe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the root residual rate of 32P in NT at the same stage was 6.84% lower than that in CT rice on the average”
Claim · model-written summary
No-tillage reduced effective panicle number regardless of establishment method.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effective panicle in NT was lower than that in CT”
t0“Hybrid Rice”
Claim · model-written summary
No-tillage increased spikelet number per panicle regardless of establishment method.
- Taxon
- hybrid riceOryza sativat0
- Treatment
- NTe0
- Outcome
- spikelet number per paniclee0
- Direction
- highere0
- Comparator
- CTe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the spikelet number per panicle in NT was higher than that in CT no matter which rice establish method was adopted”
t0“Hybrid Rice”
Claim · model-written summary
No-tillage DB rice yielded 8979.0 kg·ha-1, 2.30% above CT.
- Taxon
- riceOryza sativae0
- Treatment
- NTe0
- Outcome
- rice yielde0
- Direction
- increasinge0
- Value
- 8979.0 kg·ha-1e0
- Qualifier
- 2.30%e0
- Comparator
- CTe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The rice yield of NT rice reached to 8979.0 kg·ha-1and 8588.0 kg·ha-1,increasing by 2.30%,1.19%,compared with CT on the average on DB and RT condition,respectively”
Claim · model-written summary
No-tillage RT rice yielded 8588.0 kg·ha-1, 1.19% above CT.
- Taxon
- riceOryza sativae0
- Treatment
- NTe0
- Outcome
- rice yielde0
- Direction
- increasinge0
- Value
- 8588.0 kg·ha-1e0
- Qualifier
- 1.19%e0
- Comparator
- CTe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The rice yield of NT rice reached to 8979.0 kg·ha-1and 8588.0 kg·ha-1,increasing by 2.30%,1.19%,compared with CT on the average on DB and RT condition,respectively”
Claim · model-written summary
Authors attribute no-tillage yield superiority to improved root properties.
- Taxon
- riceOryza sativae0
- Outcome
- rice yield superioritye0
- Qualifier
- good root propertiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The rice yield superiority in NT was obvious compared with in CT,which was the reaction of good root properties in NT.”
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