Abstract
In order to ascertain the effects of different application levels of nitrogen fertilizer on growth and water utilization of maize under Shajiang black soil,a field experiment was conducted to investigate the effect of different dosage of nitrogen fertilizer on soil moisture,maize agronomic characters,production elements,yield and water utilization.The results indicated that nitrogen fertilizer improved soil moisture content in the 0-100cm deep soil,especially the treatment with 360kg/ha nitrogen.And when the dosage of nitrogen fertilizer was 360kg/ha,the maize leaf number,plant height,and stem diameter were significantly higher than other treatments at different maize growth period.With the increase of nitrogen fertilizer,the biomass increased first and then decreased,that of the treatment with 540kg/ha nitrogen fertilizer was the largest,which increased by 31.9% compared with the CK,while the biomass of the treatment with 90kg/ha and 360kg/ha nitrogen fertilizer was significantly lower than the CK.What'more,maize yield and water use efficiency increased first and then reduced gradually with the increase of nitrogen fertilizer.While the highest yield was founded in the treatment with 270kg/ha nitrogen fertilizer,and the highest water use efficiency occurred in the treatment with 360kg/ha compared with the other treatments,but which was no significant differences compared with the treatment with 270kg/ha nitrogen fertilizer.It was concluded that the dosage of 270kg nitrogen fertilizer per hectare is recommendated according to the comprehensive factors.
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The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 11
Claim · model-written summary
Nitrogen fertilizer improved soil moisture, especially at 360kg/ha.
- Treatment
- nitrogen fertilizere0
- Outcome
- soil moisture contente0
- Direction
- improvede0
- Qualifier
- 360kg/ha nitrogene0
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nitrogen fertilizer improved soil moisture content in the 0-100cm deep soil,especially the treatment with 360kg/ha nitrogen.”
t0“Maize”
Claim · model-written summary
At 360kg/ha nitrogen, maize leaf number, height and stem diameter exceeded other treatments significantly.
- Treatment
- 360kg/hae0
- Outcome
- leaf number,plant height,and stem diametere0
- Direction
- highere0
- Comparator
- other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when the dosage of nitrogen fertilizer was 360kg/ha,the maize leaf number,plant height,and stem diameter were significantly higher than other treatments”
Claim · model-written summary
Biomass first increased and then decreased as nitrogen fertilizer increased.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With the increase of nitrogen fertilizer,the biomass increased first and then decreased”
t0“Maize”
Claim · model-written summary
540kg/ha nitrogen produced maximum biomass, 31.9% above CK.
- Treatment
- 540kg/ha nitrogen fertilizere0
- Outcome
- the largeste0
- Direction
- increasede0
- Value
- 31.9%e0
- Comparator
- CKe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the treatment with 540kg/ha nitrogen fertilizer was the largest,which increased by 31.9% compared with the CK”
t0“Maize”
Claim · model-written summary
90kg/ha nitrogen yielded significantly lower biomass than CK.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the biomass of the treatment with 90kg/ha and 360kg/ha nitrogen fertilizer was significantly lower than the CK”
t0“Maize”
Claim · model-written summary
360kg/ha nitrogen yielded significantly lower biomass than CK.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the biomass of the treatment with 90kg/ha and 360kg/ha nitrogen fertilizer was significantly lower than the CK”
t0“Maize”
Claim · model-written summary
Yield rose then fell with increasing nitrogen fertilizer.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maize yield and water use efficiency increased first and then reduced gradually with the increase of nitrogen fertilizer.”
Claim · model-written summary
Water use efficiency rose then fell with increasing nitrogen fertilizer.
- Treatment
- nitrogen fertilizere0
- Outcome
- water use efficiencye0
- Direction
- increased first and then reduced graduallye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maize yield and water use efficiency increased first and then reduced gradually with the increase of nitrogen fertilizer.”
Claim · model-written summary
270kg/ha nitrogen produced the highest maize yield.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest yield was founded in the treatment with 270kg/ha nitrogen fertilizer”
t0“Maize”
Claim · model-written summary
360kg/ha nitrogen produced the highest water use efficiency without significant difference from 270kg/ha.
- Treatment
- 360kg/hae0
- Outcome
- water use efficiencye0
- Direction
- higheste0
- Qualifier
- no significant differences compared with the treatment with 270kg/hae0
- Comparator
- other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest water use efficiency occurred in the treatment with 360kg/ha compared with the other treatments,but which was no significant differences compared with the treatment with 270kg/ha nitrogen fertilizer.”
t0“Maize”
Claim · model-written summary
Authors recommend 270kg nitrogen fertilizer per hectare.
- Outcome
- 270kg nitrogen fertilizer per hectaree0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the dosage of 270kg nitrogen fertilizer per hectare is recommendated according to the comprehensive factors.”
t0“Maize”
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See all 3,908 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.