Abstract
The effects of the amount of nitrogen fertilizer and transplanting density on yield and N application rate of rice in hilly area of South Henan were studied. Two hybrid rice varieties, Gangyou1237 and II-you 838 were used as test materials.The results showed that N level and transplanting density affected rice yield. The average absorption rate of the rice yield increased 588~2 579 kg / hm2 and 13~424 kg / hm2 at the same N level with high planting density(240 000 plants / hm2)comparing with the low density(180 000 plants / hm2) of the two rice cultivars. The rice yield had turning points of nitrogen application with low planting density, but no turning points with high planting density. NUE(nitrogen recovery efficiency) in treatment of high transplanting density was higher than that of low transplanting density by 4.3~11.5 percent and 3.1~27.5 percent at the same N level. NUE was increased with the increase of nitrogen fertilizer at the same density. It is indicated that increasing plant density and deceasing nitrogen fertilizer application significantly increased NUE. The combination of fertilization and transplanting density was an important ways for increasing efficacy of applying fertilizer.
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Claims 10
Claim · model-written summary
Nitrogen level and transplanting density affected rice yield.
- Taxon
- rice
Oryza sativat1 - Outcome
- rice yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N level and transplanting density affected rice yield.”
t1“Rice”
Claim · model-written summary
At the same nitrogen level, high density increased yield for one cultivar by 588~2 579 kg / hm2.
- Taxon
- riceOryza sativat1
- Treatment
- high planting density(240 000 plants / hm2)e0
- Outcome
- rice yielde0
- Direction
- increasede0
- Value
- 588~2 579 kg / hm2e0
- Comparator
- low density(180 000 plants / hm2)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The average absorption rate of the rice yield increased 588~2 579 kg / hm2 and 13~424 kg / hm2 at the same N level with high planting density(240 000 plants / hm2)comparing with the low density(180 000 plants / hm2) of the two rice cultivars.”
t1“Rice”
Claim · model-written summary
At the same nitrogen level, high density increased yield for the other cultivar by 13~424 kg / hm2.
- Taxon
- riceOryza sativat1
- Treatment
- high planting density(240 000 plants / hm2)e0
- Outcome
- rice yielde0
- Direction
- increasede0
- Value
- 13~424 kg / hm2e0
- Comparator
- low density(180 000 plants / hm2)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The average absorption rate of the rice yield increased 588~2 579 kg / hm2 and 13~424 kg / hm2 at the same N level with high planting density(240 000 plants / hm2)comparing with the low density(180 000 plants / hm2) of the two rice cultivars.”
t1“Rice”
Claim · model-written summary
Rice yield had nitrogen application turning points under low planting density.
- Taxon
- riceOryza sativat1
- Outcome
- rice yield had turning pointse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The rice yield had turning points of nitrogen application with low planting density”
t1“Rice”
Claim · model-written summary
Rice yield had no nitrogen application turning point under high planting density.
- Taxon
- riceOryza sativat1
- Outcome
- no turning pointse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but no turning points with high planting density.”
t1“Rice”
Claim · model-written summary
High density raised nitrogen recovery efficiency by 4.3~11.5 percent for one cultivar.
- Taxon
- riceOryza sativat1
- Treatment
- high transplanting densitye0
- Outcome
- nitrogen recovery efficiencye0
- Direction
- highere0
- Value
- 4.3~11.5 percente0
- Comparator
- low transplanting densitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NUE(nitrogen recovery efficiency) in treatment of high transplanting density was higher than that of low transplanting density by 4.3~11.5 percent and 3.1~27.5 percent at the same N level.”
t1“Rice”
Claim · model-written summary
High density raised nitrogen recovery efficiency by 3.1~27.5 percent for the other cultivar.
- Taxon
- riceOryza sativat1
- Treatment
- high transplanting densitye0
- Outcome
- nitrogen recovery efficiencye0
- Direction
- highere0
- Value
- 3.1~27.5 percente0
- Comparator
- low transplanting densitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NUE(nitrogen recovery efficiency) in treatment of high transplanting density was higher than that of low transplanting density by 4.3~11.5 percent and 3.1~27.5 percent at the same N level.”
t1“Rice”
Claim · model-written summary
Nitrogen recovery efficiency increased with nitrogen fertilizer at the same density.
- Taxon
- riceOryza sativat1
- Treatment
- nitrogen fertilizere0
- Outcome
- NUEe0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NUE was increased with the increase of nitrogen fertilizer at the same density.”
t1“Rice”
Claim · model-written summary
Increasing plant density and reducing fertilizer significantly increased nitrogen recovery efficiency.
- Taxon
- riceOryza sativat1
- Treatment
- increasing plant density and deceasing nitrogen fertilizer applicatione0
- Outcome
- NUEe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increasing plant density and deceasing nitrogen fertilizer application significantly increased NUE.”
t1“Rice”
Claim · model-written summary
Authors identify combining fertilization and density as a way to improve fertilizer use efficacy.
- Taxon
- riceOryza sativat1
- Outcome
- combination of fertilization and transplanting densitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The combination of fertilization and transplanting density was an important ways for increasing efficacy of applying fertilizer.”
t1“Rice”
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See all 395 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.