Abstract
Two summer maize cultivars,Zhengdan958 and Nongda108,were used,and the effect of different types of nitrogen fertilizer(NF) and different application rates on water and nitrogen utilization and apparent budget of soil nitrogen were studied.The main results are as follows:(1)With the increment of N application rate,yield,water use amount and water produce efficiency(WPE) increased but nitrogen use efficiency(NUE) decreased.(2)There existed obvious genotype difference in WPE and NUE in summer maize.WPE of Zhengdan958 was bigger than that of Nongda108,and NUE of Nongda108 was bigger.(3)WPE and NUE were affected by type of NF.As for WPE of Zhengdan958,compound fertilizercommon ureacoated urea,but the difference among treatments of Nongda108 was smaller,that of compound fertilizer was bigger and that of the other two type of NF was equal nearly.Compared with common urea,NUE of coated urea and compound fertilizer was bigger,especially when 90 kg N/hm~2 for Zhengdan958 and 180 kg N/hm~2 for Nongda108.(4)After summer maize season,all treatments of two cultivars showed soil N deficit(SND) and the amount of SND decreased with the increment of N application rate.In common,amount of SND of Zhengdan958 was bigger than that of Nongda108.The amount of soil N apparent deficit of three type NF showed compound fertilizercoated ureacommon urea.
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Claims 17
Claim · model-written summary
Increasing nitrogen rate increased maize yield.
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With the increment of N application rate,yield,water use amount and water produce efficiency(WPE) increased but nitrogen use efficiency(NUE) decreased”
t0“Summer Maize”
Claim · model-written summary
Increasing nitrogen rate increased water use amount.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With the increment of N application rate,yield,water use amount and water produce efficiency(WPE) increased but nitrogen use efficiency(NUE) decreased”
t0“Summer Maize”
Claim · model-written summary
Increasing nitrogen rate increased water produce efficiency.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With the increment of N application rate,yield,water use amount and water produce efficiency(WPE) increased but nitrogen use efficiency(NUE) decreased”
t0“Summer Maize”
Claim · model-written summary
Increasing nitrogen rate decreased nitrogen use efficiency.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With the increment of N application rate,yield,water use amount and water produce efficiency(WPE) increased but nitrogen use efficiency(NUE) decreased”
t0“Summer Maize”
Claim · model-written summary
Zhengdan958 had greater WPE than Nongda108.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“WPE of Zhengdan958 was bigger than that of Nongda108”
t0“Summer Maize”
Claim · model-written summary
Nongda108 had greater NUE than Zhengdan958.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NUE of Nongda108 was bigger”
e1“WPE of Zhengdan958 was bigger than that of Nongda108”
t0“Summer Maize”
Claim · model-written summary
Zhengdan958 WPE differed by fertilizer type, with the ranking damaged in the text.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As for WPE of Zhengdan958,compound fertilizercommon ureacoated urea”
t0“Summer Maize”
Claim · model-written summary
Nongda108 showed smaller WPE differences among fertilizer treatments.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the difference among treatments of Nongda108 was smaller”
t0“Summer Maize”
Claim · model-written summary
Compound fertilizer gave Nongda108 greater WPE than the other two fertilizer types, which were nearly equal.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“that of compound fertilizer was bigger and that of the other two type of NF was equal nearly”
e1“treatments of Nongda108 was smaller”
e2“WPE and NUE were affected by type of NF”
t0“Summer Maize”
Claim · model-written summary
Coated urea increased NUE relative to common urea.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with common urea,NUE of coated urea and compound fertilizer was bigger”
t0“Summer Maize”
Claim · model-written summary
Compound fertilizer increased NUE relative to common urea.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with common urea,NUE of coated urea and compound fertilizer was bigger”
t0“Summer Maize”
Claim · model-written summary
The NUE advantage was especially evident at 90 kg N/hm~2 for Zhengdan958.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“especially when 90 kg N/hm~2 for Zhengdan958 and 180 kg N/hm~2 for Nongda108”
e1“Compared with common urea,NUE of coated urea and compound fertilizer was bigger”
t0“Summer Maize”
Claim · model-written summary
The NUE advantage was especially evident at 180 kg N/hm~2 for Nongda108.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“especially when 90 kg N/hm~2 for Zhengdan958 and 180 kg N/hm~2 for Nongda108”
e1“Compared with common urea,NUE of coated urea and compound fertilizer was bigger”
t0“Summer Maize”
Claim · model-written summary
All treatments showed soil nitrogen deficit after the maize season.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After summer maize season,all treatments of two cultivars showed soil N deficit(SND)”
Claim · model-written summary
Soil nitrogen deficit decreased as nitrogen application rate increased.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the amount of SND decreased with the increment of N application rate”
t0“Summer Maize”
Claim · model-written summary
Zhengdan958 generally had a greater soil nitrogen deficit than Nongda108.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“amount of SND of Zhengdan958 was bigger than that of Nongda108”
t0“Summer Maize”
Claim · model-written summary
Soil nitrogen apparent deficit differed by fertilizer type, but the ranking is damaged in the text.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The amount of soil N apparent deficit of three type NF showed compound fertilizercoated ureacommon urea”
t0“Summer Maize”
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