Abstract
[Objective] The research aimed to study the appropriate nitrogen amunt of direct-seeding rapeseed in Jianghuai Region,Anhui.[Method]The field trials were conducted to study the effects of nitrogen fertilizer supply on yield,N use efficiency and economic benefits of direct-seeding rapeseed.[Result] N fertilizer could increase the yield of direct-seeding rapeseed significantly.Rapeseed yield was improved with the increase of the amount of N fertilizer.The treatment N360 achieved the highest yield in the three test plots.With the increase of nitrogen application rate,partial factor productivity was decreased.But there was no obvious rule about the N agronomic use efficiency.The results also showed that nitrogen fertilizer significantly increased the economic benefits of direct-seeding rapeseed.The treatment N360 achieved the maximum income and net profit of 7 494.95 and 6 234.95 yuan/hm2,respectively,while the treatment N270 achieved the best VCR of 3.12.[Conclusion]The appropriate nitrogen amount was 270-360 kg/hm2 in Jianghuai Region,Anhui under the condition of this experiment.
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Claims 10
Claim · model-written summary
Nitrogen fertilizer significantly increased the yield of direct-seeding rapeseed.
Not reportedComparator
Verbatim
t0“Direct-seeding Rapeseed”
e1“N fertilizer could increase the yield of direct-seeding rapeseed significantly”
e2“The field trials were conducted to study the effects of nitrogen fertilizer supply on yield,N use efficiency and economic benefits of direct-seeding rapeseed”
Claim · model-written summary
Rapeseed yield improved as the amount of N fertilizer increased.
Verbatim
t0“Direct-seeding Rapeseed”
e3“Rapeseed yield was improved with the increase of the amount of N fertilizer”
Claim · model-written summary
The N360 treatment achieved the highest yield in the three test plots.
Not reportedComparator
Verbatim
t0“Direct-seeding Rapeseed”
e4“The treatment N360 achieved the highest yield in the three test plots”
Claim · model-written summary
Partial factor productivity decreased as nitrogen application rate increased.
Verbatim
t0“Direct-seeding Rapeseed”
e5“With the increase of nitrogen application rate,partial factor productivity was decreased”
Claim · model-written summary
No obvious rule was found for N agronomic use efficiency across N rates.
Verbatim
t0“Direct-seeding Rapeseed”
e6“But there was no obvious rule about the N agronomic use efficiency”
Claim · model-written summary
Nitrogen fertilizer significantly increased the economic benefits of direct-seeding rapeseed.
Not reportedComparator
Verbatim
e7“The results also showed that nitrogen fertilizer significantly increased the economic benefits of direct-seeding rapeseed”
Claim · model-written summary
The N360 treatment achieved the maximum income of 7 494.95 yuan/hm2.
Verbatim
t0“Direct-seeding Rapeseed”
e1“The treatment N360 achieved the maximum income and net profit of 7 494.95 and 6 234.95 yuan/hm2,respectively”
Claim · model-written summary
The N360 treatment achieved the maximum net profit of 6 234.95 yuan/hm2.
Verbatim
t0“Direct-seeding Rapeseed”
e1“The treatment N360 achieved the maximum income and net profit of 7 494.95 and 6 234.95 yuan/hm2,respectively”
Claim · model-written summary
The N270 treatment achieved the best VCR of 3.12.
Verbatim
t0“Direct-seeding Rapeseed”
e1“while the treatment N270 achieved the best VCR of 3.12”
Claim · model-written summary
The appropriate nitrogen amount for direct-seeding rapeseed is 270-360 kg/hm2 in Jianghuai Region, Anhui.
Verbatim
t0“Direct-seeding Rapeseed”
e1“The appropriate nitrogen amount was 270-360 kg/hm2 in Jianghuai Region,Anhui under the condition of this experiment”
The same questions in other papers
fertilization · yield · Brassica napus (oilseed rape)Positive and negative results
336 papers in the same direction as this paper · 37 in the opposite direction · 4 reporting no difference from an alternative
- negative
- no effect
- no effect
374 papers more in this group
See all 378 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.