Abstract
[Objective] The aim was to determine decreasing application rate of nitrogen(N) fertilizer on rice growth and N use efficiency in Chaohu lake valley.[Method] Five treatments of different N application rates of 0,60%,80% and 120% on the basis of 180 kg N/hm2 were set up in the test.When rice was matured,25 plants were randomly selected in each plot for inspecting the yield components,and seed yield every plot of rice were observed.[Result] There was insignificant effect of reducing N application rate suitably on rice growth,seed yield increased by-1.63-1.92% and-2.36-2.57% averagely 0.32% and 0.34% respectively.N use efficiency of partial factor productivity,agronomic efficiency,physiological efficiency and apparent recovery efficiency all improved,and increased with the dropping of N application rate.[Conclusion] Effect of suitably reducing N application rate on rice growth and seed yield was insignificant in Chaohu lake valley,but N use efficiency could be improved obviously,which is benefit for environment protection.
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Claims 4
Claim · model-written summary
Suitably reducing the nitrogen application rate had an insignificant effect on rice growth.
- Taxon
- rice
Oryza sativae0 - Treatment
- reducing N application rate suitablye1
- Outcome
- rice growthe1
- Direction
- insignificant effecte1
- Setting
- Chaohu lake valleye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The aim was to determine decreasing application rate of nitrogen(N) fertilizer on rice growth and N use efficiency in Chaohu lake valley”
e1“There was insignificant effect of reducing N application rate suitably on rice growth”
Claim · model-written summary
Suitably reducing the nitrogen application rate changed seed yield by only 0.32% and 0.34% on average, which was not significant.
- Taxon
- riceOryza sativae0
- Treatment
- reducing N application rate suitablye1
- Outcome
- seed yielde3
- Direction
- increasede3
- Value
- 0.32% and 0.34%e3
- Qualifier
- insignificant effecte1
- Setting
- Chaohu lake valleye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The aim was to determine decreasing application rate of nitrogen(N) fertilizer on rice growth and N use efficiency in Chaohu lake valley”
e1“There was insignificant effect of reducing N application rate suitably on rice growth”
e3“seed yield increased by-1.63-1.92% and-2.36-2.57% averagely 0.32% and 0.34% respectively”
Claim · model-written summary
Decreasing the N application rate improved N use efficiency of partial factor productivity, agronomic efficiency and physiological efficiency.
- Taxon
- riceOryza sativae0
- Treatment
- dropping of N application ratee2
- Outcome
- N use efficiency of partial factor productivity, agronomic efficiency, physiological efficiencye2
- Direction
- improvede2
- Setting
- Chaohu lake valleye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The aim was to determine decreasing application rate of nitrogen(N) fertilizer on rice growth and N use efficiency in Chaohu lake valley”
e2“N use efficiency of partial factor productivity, agronomic efficiency, physiological efficiency and apparent recovery efficiency all improved, and increased with the dropping of N application rate”
Claim · model-written summary
Decreasing the N application rate improved apparent recovery efficiency of nitrogen.
- Taxon
- riceOryza sativae0
- Treatment
- dropping of N application ratee2
- Outcome
- apparent recovery efficiencye2
- Direction
- improvede2
- Setting
- Chaohu lake valleye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The aim was to determine decreasing application rate of nitrogen(N) fertilizer on rice growth and N use efficiency in Chaohu lake valley”
e2“N use efficiency of partial factor productivity, agronomic efficiency, physiological efficiency and apparent recovery efficiency all improved, and increased with the dropping of N application rate”
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See all 2,045 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.