Abstract
【Objective】Four popular midseason varieties of rice(Luoyou8,Guohaozayou1,Fengyou22 and Jufengyou72) were used to study the effects of application technology of nitrogen(N) on grain yield,grain quality and N-use efficiency in Hubei province.【Method】Field trials with five N treatments(CK,FFP,modified FFP,SHY and modified SHY) and four replications were conducted synchronously at both Chibi County and Jingmen County,Hubei province in 2008 and 2009,respectively.【Result】The results showed that grain yield of the control with no N application at Chibi was significantly lower than that at Jingmen both in 2008 and in 2009,which implied that soil N fertility in Jingmen was higher than that in Chibi.Grain yield of modified farmers' fertilizer practice(FFP),super high yield(SHY) and modified SHY were more than that of FFP at Chibi with yield increase rates 10.0%,2.3% and 23.2%,respectively,in 2008;and 16.6%,11.8% and 22.6%,respectively in 2009.However,at Jingmen,grain yield of modified FFP,SHY and modified SHY were lower than that of FFP in 2008 and slightly more than that of FFP in 2009 with yield increase rates 2.0%,6.7% and 1.7%,respectively.Nitrogen agronomic efficiency(AE) and nitrogen partial factor productivity(PFP) of modified FFP and modified SHY were higher than that of FFP in Chibi.PFP of N of above two treatments was significantly higher,while AE slightly higher than that of FFP at Jingmen.N-use efficiencies(NUE) of SHY at two field trial spots in two years were far lower than that of other treatments.【Conclusion】 Both modified FFP and modified SHY treatments achieved higher grain yield and higher NUE,which suggested that 20% reduction of nitrogen of FFP could increase grain yield as well as NUE.On the contrary,too much N application would not increase,even reduce grain yield.In addition,the optimized nitrogen management could also improve the grain quality of rice.
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Claims 20
Claim · model-written summary
Grain yield with no N application was significantly lower at Chibi than at Jingmen in 2008 and 2009.
- Taxon
- rice
Oryza sativae0 - Treatment
- no N applicatione1
- Outcome
- grain yielde1
- Direction
- lowere1
- Comparator
- Jingmene1
- Setting
- Chibie1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Four popular midseason varieties of rice(Luoyou8,Guohaozayou1,Fengyou22 and Jufengyou72)”
e1“grain yield of the control with no N application at Chibi was significantly lower than that at Jingmen both in 2008 and in 2009”
Claim · model-written summary
modified farmers' fertilizer practice(FFP) increased grain yield over FFP at Chibi by 10.0% in 2008.
- Taxon
- riceOryza sativae0
- Treatment
- modified farmers' fertilizer practice(FFP)e1
- Outcome
- grain yielde1
- Direction
- moree1
- Value
- 10.0%e1
- Qualifier
- 2008e1
- Comparator
- FFPe1
- Setting
- Chibie1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Four popular midseason varieties of rice(Luoyou8,Guohaozayou1,Fengyou22 and Jufengyou72)”
e1“Grain yield of modified farmers' fertilizer practice(FFP),super high yield(SHY) and modified SHY were more than that of FFP at Chibi with yield increase rates 10.0%,2.3% and 23.2%,respectively,in 2008;and 16.6%,11.8% and 22.6%,respectively in 2009”
Claim · model-written summary
super high yield(SHY) increased grain yield over FFP at Chibi by 2.3% in 2008.
- Taxon
- riceOryza sativae0
- Treatment
- super high yield(SHY)e1
- Outcome
- grain yielde1
- Direction
- moree1
- Value
- 2.3%e1
- Qualifier
- 2008e1
- Comparator
- FFPe1
- Setting
- Chibie1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Four popular midseason varieties of rice(Luoyou8,Guohaozayou1,Fengyou22 and Jufengyou72)”
e1“Grain yield of modified farmers' fertilizer practice(FFP),super high yield(SHY) and modified SHY were more than that of FFP at Chibi with yield increase rates 10.0%,2.3% and 23.2%,respectively,in 2008;and 16.6%,11.8% and 22.6%,respectively in 2009”
Claim · model-written summary
modified SHY increased grain yield over FFP at Chibi by 23.2% in 2008.
- Taxon
- riceOryza sativae0
- Treatment
- modified SHYe1
- Outcome
- grain yielde1
- Direction
- moree1
- Value
- 23.2%e1
- Qualifier
- 2008e1
- Comparator
- FFPe1
- Setting
- Chibie1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Four popular midseason varieties of rice(Luoyou8,Guohaozayou1,Fengyou22 and Jufengyou72)”
e1“Grain yield of modified farmers' fertilizer practice(FFP),super high yield(SHY) and modified SHY were more than that of FFP at Chibi with yield increase rates 10.0%,2.3% and 23.2%,respectively,in 2008;and 16.6%,11.8% and 22.6%,respectively in 2009”
Claim · model-written summary
modified farmers' fertilizer practice(FFP) increased grain yield over FFP at Chibi by 16.6% in 2009.
- Taxon
- riceOryza sativae0
- Treatment
- modified farmers' fertilizer practice(FFP)e1
- Outcome
- grain yielde1
- Direction
- moree1
- Value
- 16.6%e1
- Qualifier
- 2009e1
- Comparator
- FFPe1
- Setting
- Chibie1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Four popular midseason varieties of rice(Luoyou8,Guohaozayou1,Fengyou22 and Jufengyou72)”
e1“Grain yield of modified farmers' fertilizer practice(FFP),super high yield(SHY) and modified SHY were more than that of FFP at Chibi with yield increase rates 10.0%,2.3% and 23.2%,respectively,in 2008;and 16.6%,11.8% and 22.6%,respectively in 2009”
Claim · model-written summary
super high yield(SHY) increased grain yield over FFP at Chibi by 11.8% in 2009.
- Taxon
- riceOryza sativae0
- Treatment
- super high yield(SHY)e1
- Outcome
- grain yielde1
- Direction
- moree1
- Value
- 11.8%e1
- Qualifier
- 2009e1
- Comparator
- FFPe1
- Setting
- Chibie1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Four popular midseason varieties of rice(Luoyou8,Guohaozayou1,Fengyou22 and Jufengyou72)”
e1“Grain yield of modified farmers' fertilizer practice(FFP),super high yield(SHY) and modified SHY were more than that of FFP at Chibi with yield increase rates 10.0%,2.3% and 23.2%,respectively,in 2008;and 16.6%,11.8% and 22.6%,respectively in 2009”
Claim · model-written summary
modified SHY increased grain yield over FFP at Chibi by 22.6% in 2009.
- Taxon
- riceOryza sativae0
- Treatment
- modified SHYe1
- Outcome
- grain yielde1
- Direction
- moree1
- Value
- 22.6%e1
- Qualifier
- 2009e1
- Comparator
- FFPe1
- Setting
- Chibie1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Four popular midseason varieties of rice(Luoyou8,Guohaozayou1,Fengyou22 and Jufengyou72)”
e1“Grain yield of modified farmers' fertilizer practice(FFP),super high yield(SHY) and modified SHY were more than that of FFP at Chibi with yield increase rates 10.0%,2.3% and 23.2%,respectively,in 2008;and 16.6%,11.8% and 22.6%,respectively in 2009”
Claim · model-written summary
Modified FFP, SHY and modified SHY gave lower grain yield than FFP at Jingmen in 2008.
- Taxon
- riceOryza sativae0
- Treatment
- modified FFP,SHY and modified SHYe1
- Outcome
- grain yielde1
- Direction
- lowere1
- Qualifier
- 2008e1
- Comparator
- FFPe1
- Setting
- Jingmene1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Four popular midseason varieties of rice(Luoyou8,Guohaozayou1,Fengyou22 and Jufengyou72)”
e1“at Jingmen,grain yield of modified FFP,SHY and modified SHY were lower than that of FFP in 2008 and slightly more than that of FFP in 2009 with yield increase rates 2.0%,6.7% and 1.7%”
Claim · model-written summary
modified FFP gave slightly higher grain yield than FFP at Jingmen in 2009, with a yield increase of 2.0%.
- Taxon
- riceOryza sativae0
- Treatment
- modified FFPe1
- Outcome
- grain yielde1
- Direction
- slightly moree1
- Value
- 2.0%e1
- Qualifier
- 2009e1
- Comparator
- FFPe1
- Setting
- Jingmene1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Four popular midseason varieties of rice(Luoyou8,Guohaozayou1,Fengyou22 and Jufengyou72)”
e1“at Jingmen,grain yield of modified FFP,SHY and modified SHY were lower than that of FFP in 2008 and slightly more than that of FFP in 2009 with yield increase rates 2.0%,6.7% and 1.7%”
Claim · model-written summary
SHY gave slightly higher grain yield than FFP at Jingmen in 2009, with a yield increase of 6.7%.
- Taxon
- riceOryza sativae0
- Treatment
- SHYe1
- Outcome
- grain yielde1
- Direction
- slightly moree1
- Value
- 6.7%e1
- Qualifier
- 2009e1
- Comparator
- FFPe1
- Setting
- Jingmene1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Four popular midseason varieties of rice(Luoyou8,Guohaozayou1,Fengyou22 and Jufengyou72)”
e1“at Jingmen,grain yield of modified FFP,SHY and modified SHY were lower than that of FFP in 2008 and slightly more than that of FFP in 2009 with yield increase rates 2.0%,6.7% and 1.7%”
Claim · model-written summary
modified SHY gave slightly higher grain yield than FFP at Jingmen in 2009, with a yield increase of 1.7%.
- Taxon
- riceOryza sativae0
- Treatment
- modified SHYe1
- Outcome
- grain yielde1
- Direction
- slightly moree1
- Value
- 1.7%e1
- Qualifier
- 2009e1
- Comparator
- FFPe1
- Setting
- Jingmene1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Four popular midseason varieties of rice(Luoyou8,Guohaozayou1,Fengyou22 and Jufengyou72)”
e1“at Jingmen,grain yield of modified FFP,SHY and modified SHY were lower than that of FFP in 2008 and slightly more than that of FFP in 2009 with yield increase rates 2.0%,6.7% and 1.7%”
Claim · model-written summary
Nitrogen agronomic efficiency and partial factor productivity of modified FFP and modified SHY were higher than FFP at Chibi.
- Taxon
- riceOryza sativae0
- Treatment
- modified FFP and modified SHYe1
- Outcome
- Nitrogen agronomic efficiency(AE) and nitrogen partial factor productivity(PFP)e1
- Direction
- highere1
- Comparator
- FFPe1
- Setting
- Chibie1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Four popular midseason varieties of rice(Luoyou8,Guohaozayou1,Fengyou22 and Jufengyou72)”
e1“Nitrogen agronomic efficiency(AE) and nitrogen partial factor productivity(PFP) of modified FFP and modified SHY were higher than that of FFP in Chibi”
Claim · model-written summary
Partial factor productivity of N was significantly higher for the two modified treatments than FFP at Jingmen.
- Taxon
- riceOryza sativae0
- Treatment
- above two treatmentse1
- Outcome
- PFP of Ne1
- Direction
- significantly highere1
- Comparator
- FFPe1
- Setting
- Jingmene1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Four popular midseason varieties of rice(Luoyou8,Guohaozayou1,Fengyou22 and Jufengyou72)”
e1“PFP of N of above two treatments was significantly higher,while AE slightly higher than that of FFP at Jingmen”
Claim · model-written summary
Agronomic efficiency of N was slightly higher for the two modified treatments than FFP at Jingmen.
- Taxon
- riceOryza sativae0
- Treatment
- above two treatmentse1
- Outcome
- AEe1
- Direction
- slightly highere1
- Comparator
- FFPe1
- Setting
- Jingmene1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Four popular midseason varieties of rice(Luoyou8,Guohaozayou1,Fengyou22 and Jufengyou72)”
e1“PFP of N of above two treatments was significantly higher,while AE slightly higher than that of FFP at Jingmen”
Claim · model-written summary
N-use efficiency of SHY was far lower than that of other treatments at two sites over two years.
- Taxon
- riceOryza sativae0
- Treatment
- SHYe1
- Outcome
- N-use efficiencies(NUE)e1
- Direction
- far lowere1
- Comparator
- other treatmentse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Four popular midseason varieties of rice(Luoyou8,Guohaozayou1,Fengyou22 and Jufengyou72)”
e1“N-use efficiencies(NUE) of SHY at two field trial spots in two years were far lower than that of other treatments”
Claim · model-written summary
Modified FFP and modified SHY achieved higher grain yield.
- Taxon
- riceOryza sativae0
- Treatment
- modified FFP and modified SHY treatmentse1
- Outcome
- grain yielde1
- Direction
- highere1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Four popular midseason varieties of rice(Luoyou8,Guohaozayou1,Fengyou22 and Jufengyou72)”
e1“Both modified FFP and modified SHY treatments achieved higher grain yield and higher NUE”
Claim · model-written summary
Modified FFP and modified SHY achieved higher NUE.
- Taxon
- riceOryza sativae0
- Treatment
- modified FFP and modified SHY treatmentse1
- Outcome
- NUEe1
- Direction
- highere1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Four popular midseason varieties of rice(Luoyou8,Guohaozayou1,Fengyou22 and Jufengyou72)”
e1“Both modified FFP and modified SHY treatments achieved higher grain yield and higher NUE”
Claim · model-written summary
A 20% reduction of nitrogen relative to FFP could increase grain yield as well as NUE.
- Taxon
- riceOryza sativae0
- Treatment
- 20% reduction of nitrogen of FFPe1
- Outcome
- grain yield as well as NUEe1
- Direction
- increasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Four popular midseason varieties of rice(Luoyou8,Guohaozayou1,Fengyou22 and Jufengyou72)”
e1“suggested that 20% reduction of nitrogen of FFP could increase grain yield as well as NUE”
Claim · model-written summary
Too much N application would not increase and would even reduce grain yield.
- Taxon
- riceOryza sativae0
- Treatment
- too much N applicatione1
- Outcome
- grain yielde1
- Direction
- reducee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Four popular midseason varieties of rice(Luoyou8,Guohaozayou1,Fengyou22 and Jufengyou72)”
e1“too much N application would not increase,even reduce grain yield”
Claim · model-written summary
Optimized nitrogen management could also improve the grain quality of rice.
- Taxon
- riceOryza sativae0
- Treatment
- optimized nitrogen managemente1
- Outcome
- grain qualitye1
- Direction
- improvee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Four popular midseason varieties of rice(Luoyou8,Guohaozayou1,Fengyou22 and Jufengyou72)”
e1“the optimized nitrogen management could also improve the grain quality of rice”
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