Abstract
Based on N application rates and soil tillage modes experiment,yield,N use efficiency of spring maize and economic benefit were studied in the northwest of Hebei Province.The results of two years showed that compared with conventional tillage,no-tillage mode had no significant effect on yield of spring maize,through analyzing fertilizer response modle of N rate and yield of spring maize,the proper rate of N of spring maize was 190～209,192～212 and 193～216 kg/hm2 for no-tillage 1,no-tillage 2 and conventional tillage modes.With increase of N application rate,partial factor productivity from applied N(PFPN) of spring maize gradually decreased,agronomic efficiency of applied N(AEN) and apparent recovery efficiency of applied N(REN) arrived highest at N rate of 150 kg/hm2,and significantly decreased when N application rate was more than 225 kg/hm2,PFPN were 48.3～70.2,48.0～70.4,49.0～68.5 kg/kg,AEN were 15.2～20.5,15.2～21.1,16.4～18.6 kg/kg,and REN were 32.5%～44.0%,32.5%～45.2%,35.1%～39.0% for no-tillage 1,no-tillage 2 and conventional tillage modes at proper rate of N.Compared with conventional tillage,no-tillage mode could reduce the cost of soil tillage,greatly improve economic benefit,and high N application rate could not increase yield of spring maize and soybean.
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Claims 11
Claim · model-written summary
No-tillage mode had no significant effect on spring maize yield compared with conventional tillage.
- Treatment
- no-tillage modee0
- Outcome
- yielde0
- Direction
- no significant effecte0
- Comparator
- conventional tillagee0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“compared with conventional tillage,no-tillage mode had no significant effect on yield of spring maize”
Claim · model-written summary
The proper N rate for spring maize was 190～209, 192～212 and 193～216 kg/hm2 for no-tillage 1, no-tillage 2 and conventional tillage.
- Outcome
- proper rate of Ne0
- Value
- 190～209,192～212 and 193～216 kg/hm2e0
- Qualifier
- for no-tillage 1,no-tillage 2 and conventional tillage modese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“through analyzing fertilizer response modle of N rate and yield of spring maize,the proper rate of N of spring maize was 190～209,192～212 and 193～216 kg/hm2 for no-tillage 1,no-tillage 2 and conventional tillage modes”
Claim · model-written summary
Partial factor productivity from applied N (PFPN) of spring maize gradually decreased as N application rate increased.
- Treatment
- increase of N application ratee0
- Outcome
- partial factor productivity from applied N(PFPN)e0
- Direction
- gradually decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With increase of N application rate,partial factor productivity from applied N(PFPN) of spring maize gradually decreased”
Claim · model-written summary
Agronomic efficiency of applied N (AEN) and apparent recovery efficiency of applied N (REN) of spring maize were highest at an N rate of 150 kg/hm2.
- Treatment
- N rate of 150 kg/hm2e0
- Outcome
- agronomic efficiency of applied N(AEN) and apparent recovery efficiency of applied N(REN)e0
- Direction
- arrived higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“agronomic efficiency of applied N(AEN) and apparent recovery efficiency of applied N(REN) arrived highest at N rate of 150 kg/hm2,and significantly decreased when N application rate was more than 225 kg/hm2”
e1“N use efficiency of spring maize”
Claim · model-written summary
Agronomic efficiency of applied N (AEN) and apparent recovery efficiency of applied N (REN) of spring maize significantly decreased when N application rate was more than 225 kg/hm2.
- Treatment
- N application rate was more than 225 kg/hm2e0
- Outcome
- agronomic efficiency of applied N(AEN) and apparent recovery efficiency of applied N(REN)e0
- Direction
- significantly decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“agronomic efficiency of applied N(AEN) and apparent recovery efficiency of applied N(REN) arrived highest at N rate of 150 kg/hm2,and significantly decreased when N application rate was more than 225 kg/hm2”
e1“N use efficiency of spring maize”
Claim · model-written summary
PFPN of spring maize was 48.3～70.2, 48.0～70.4 and 49.0～68.5 kg/kg.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PFPN were 48.3～70.2,48.0～70.4,49.0～68.5 kg/kg”
e1“N use efficiency of spring maize”
Claim · model-written summary
AEN of spring maize was 15.2～20.5, 15.2～21.1 and 16.4～18.6 kg/kg.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“AEN were 15.2～20.5,15.2～21.1,16.4～18.6 kg/kg”
e1“N use efficiency of spring maize”
Claim · model-written summary
REN of spring maize was 32.5%～44.0%, 32.5%～45.2% and 35.1%～39.0%.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“REN were 32.5%～44.0%,32.5%～45.2%,35.1%～39.0%”
e1“N use efficiency of spring maize”
Claim · model-written summary
No-tillage mode could reduce the cost of soil tillage of spring maize compared with conventional tillage.
- Treatment
- no-tillage modee0
- Outcome
- cost of soil tillagee0
- Direction
- reducee0
- Comparator
- conventional tillagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with conventional tillage,no-tillage mode could reduce the cost of soil tillage”
e1“N use efficiency of spring maize”
Claim · model-written summary
No-tillage mode greatly improved the economic benefit of spring maize compared with conventional tillage.
- Treatment
- no-tillage modee0
- Outcome
- economic benefite0
- Direction
- greatly improvee0
- Comparator
- conventional tillagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with conventional tillage,no-tillage mode could reduce the cost of soil tillage,greatly improve economic benefit”
e1“N use efficiency of spring maize”
Claim · model-written summary
High N application rate could not increase spring maize yield.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high N application rate could not increase yield of spring maize and soybean”
The same questions in other papers
tillage · yield · Zea mays (maize)Positive and negative results
811 papers in the same direction as this paper · 230 in the opposite direction · 57 reporting no difference from an alternative
- no effect
- negative
- no effect
1,095 papers more in this group
See all 1,099 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.