Abstract
【Objective】 The effects of optimized fertilization on grain yield of rice and nitrogen use efficiency in paddy fields with different basic soil fertilities in Jianghan plain of China were studied.【Method】 Three-year field trials were carried out to investigate the differences in grain yield,soil N dependent rate(SNDR),N fertilization contribution rate(NCR) and the N fertilization efficiency of the popular middle rice variety Fengliangyouxiang1 in three treatments,including modified farmers' fertilizer practice(MFP),farmers' fertilizer practice(FFP) and the control,in Jianghan plain,China.【Result】 The results showed that the grain yield of MFP was the highest among all the three different nitrogen fertilizer treatments in all the field spots with different basic soil fertilities.The grain yield of MFP increased by about 6.9% and 5.0% in the high soil fertility field(HSF) and low soil fertility field(LSF) compared with the treatment of FFP,respectively;and about 17.3% and 30.3% in HSF and LSF compared with the control,respectively.Moreover,the N recovery efficiency(NRE),N agronomic efficiency(NAE) and partial factor productivity of applied N(PEPN) of MFP increased more greatly compared with that of FFP.The contribution of N fertilization to the grain yield in the LSF was significantly more than that in the HSF;however,low soil N dependent rate and good grain yield potential were observed in the LSF.【Conclusion】 Optimized fertilization reduced the relative contribution of basic soil fertilities to the grain yield of rice and increased N fertilization efficiency.
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Claims 11
Claim · model-written summary
MFP gave the highest grain yield across fertility sites.
- Taxon
- rice
Oryza sativae1 - Treatment
- MFPe0
- Outcome
- grain yielde0
- Direction
- higheste0
- Comparator
- all the three different nitrogen fertilizer treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“grain yield of MFP was the highest among all the three different nitrogen fertilizer treatments in all the field spots with different basic soil fertilities”
e1“popular middle rice variety Fengliangyouxiang1”
Claim · model-written summary
MFP raised grain yield 6.9% against FFP in high fertility soil.
- Taxon
- riceOryza sativae1
- Treatment
- MFPe0
- Outcome
- grain yielde0
- Direction
- increasede0
- Value
- 6.9%e0
- Comparator
- FFPe0
- Setting
- high soil fertility field(HSF)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“grain yield of MFP increased by about 6.9% and 5.0% in the high soil fertility field(HSF) and low soil fertility field(LSF) compared with the treatment of FFP,respectively”
e1“popular middle rice variety Fengliangyouxiang1”
Claim · model-written summary
MFP raised grain yield 5.0% against FFP in low fertility soil.
- Taxon
- riceOryza sativae1
- Treatment
- MFPe0
- Outcome
- grain yielde0
- Direction
- increasede0
- Value
- 5.0%e0
- Comparator
- FFPe0
- Setting
- low soil fertility field(LSF)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“grain yield of MFP increased by about 6.9% and 5.0% in the high soil fertility field(HSF) and low soil fertility field(LSF) compared with the treatment of FFP,respectively”
e1“popular middle rice variety Fengliangyouxiang1”
Claim · model-written summary
MFP raised grain yield 17.3% against control in high fertility soil.
- Taxon
- riceOryza sativae2
- Treatment
- MFPe1
- Outcome
- grain yielde1
- Direction
- increasede1
- Value
- 17.3%e0
- Comparator
- the controle0
- Setting
- HSFe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“about 17.3% and 30.3% in HSF and LSF compared with the control,respectively”
e1“grain yield of MFP increased”
e2“popular middle rice variety Fengliangyouxiang1”
Claim · model-written summary
MFP raised grain yield 30.3% against control in low fertility soil.
- Taxon
- riceOryza sativae2
- Treatment
- MFPe1
- Outcome
- grain yielde1
- Direction
- increasede1
- Value
- 30.3%e0
- Comparator
- the controle0
- Setting
- LSFe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“about 17.3% and 30.3% in HSF and LSF compared with the control,respectively”
e1“grain yield of MFP increased”
e2“popular middle rice variety Fengliangyouxiang1”
Claim · model-written summary
MFP raised N recovery, agronomic efficiency and partial factor productivity over FFP.
- Taxon
- riceOryza sativae1
- Treatment
- MFPe0
- Outcome
- N recovery efficiency(NRE),N agronomic efficiency(NAE) and partial factor productivity of applied N(PEPN)e0
- Direction
- increasede0
- Comparator
- FFPe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N recovery efficiency(NRE),N agronomic efficiency(NAE) and partial factor productivity of applied N(PEPN) of MFP increased more greatly compared with that of FFP”
e1“popular middle rice variety Fengliangyouxiang1”
Claim · model-written summary
Nitrogen fertilizer contributed more to yield in low fertility soil than high fertility soil.
- Taxon
- riceOryza sativae1
- Treatment
- N fertilizatione0
- Outcome
- contribution of N fertilization to the grain yielde0
- Direction
- moree0
- Comparator
- HSFe0
- Setting
- LSFe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“contribution of N fertilization to the grain yield in the LSF was significantly more than that in the HSF”
e1“popular middle rice variety Fengliangyouxiang1”
Claim · model-written summary
Low fertility soil showed a low soil N dependence rate.
- Taxon
- riceOryza sativae1
- Outcome
- soil N dependent ratee0
- Direction
- lowe0
- Setting
- LSFe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“low soil N dependent rate and good grain yield potential were observed in the LSF”
e1“popular middle rice variety Fengliangyouxiang1”
Claim · model-written summary
Low fertility soil showed good grain yield potential.
- Taxon
- riceOryza sativae1
- Outcome
- grain yield potentiale0
- Direction
- goode0
- Setting
- LSFe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“low soil N dependent rate and good grain yield potential were observed in the LSF”
e1“popular middle rice variety Fengliangyouxiang1”
Claim · model-written summary
Optimized fertilization reduced the relative contribution of basic soil fertility to rice yield.
- Taxon
- riceOryza sativae0
- Treatment
- Optimized fertilizatione0
- Outcome
- relative contribution of basic soil fertilities to the grain yielde0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Optimized fertilization reduced the relative contribution of basic soil fertilities to the grain yield of rice”
Claim · model-written summary
Optimized fertilization increased nitrogen fertilization efficiency.
- Taxon
- riceOryza sativae0
- Treatment
- Optimized fertilizatione0
- Outcome
- N fertilization efficiencye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Optimized fertilization reduced the relative contribution of basic soil fertilities to the grain yield of rice and increased N fertilization efficiency”
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See all 3,455 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.