Home > Publications database > N$_{2}$O and CH$_{4}$ Emissions, and NO$_{3}$ − Leaching on a Crop-Yield Basis from a Subtropical Rain-fed Wheat–Maize Rotation in Response to Different Types of Nitrogen Fertilizer > print

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005     20210129213813.0
024 7 _ |a 10.1007/s10021-013-9723-7
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024 7 _ |a 1432-9840
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037 _ _ |a FZJ-2014-03363
082 _ _ |a 570
100 1 _ |a Zhou, Minghua
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245 _ _ |a N$_{2}$O and CH$_{4}$ Emissions, and NO$_{3}$ − Leaching on a Crop-Yield Basis from a Subtropical Rain-fed Wheat–Maize Rotation in Response to Different Types of Nitrogen Fertilizer
260 _ _ |a New York, NY
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336 7 _ |a Journal Article
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520 _ _ |a Guaranteeing high crop yields while reducing environmental impacts of nitrogen fertilizer use due to associated losses of N2O emissions and nitrate (NO3 −) leaching is a key challenge in the context of sustainable intensification of crop production. However, few field data sets are available that explore the effect of different forms of N management on yields as well as on N losses in the form of N2O or NO3 −. Here we report on a large-scale field lysimeter (8 × 4 m2) experiment, which was designed to determine soil CH4 and N2O emissions, NO3 − leaching losses and crop yields from a subtropical rain-fed wheat–maize rotation in the Sichuan Basin, one of the most intensively used agricultural regions in China. One control and three different fertilizer treatments with the same total rate of N application (280 kg N ha−1 y−1) were included: NF: control (no fertilizer); NPK: synthetic N fertilizer; OMNPK: synthetic N fertilizer plus pig manure; RSDNPK: synthetic N fertilizer plus crop residues. As compared to the standard NPK treatment, annual NO3 − leaching losses for OMNPK and RSDNPK treatments were decreased by 36 and 22%, respectively (P < 0.05). Similarly, crop yield-scaled NO3 − leaching for NPK treatment was higher than those for either OMNPK or RSDNPK treatments (P < 0.05). Direct N2O emissions for RSDNPK treatment were decreased as compared with NPK and OMNPK treatments (P < 0.05). Furthermore, the yield-scaled GWP (global warming potential) was lower for the treatments where either pig manure or crop residues were incorporated as compared to the standard NPK treatment (P < 0.05). Our study indicates that it is possible to reduce the negative environmental impact of NO3 − leaching and N2O emissions without compromising crop productivity. Yield-scaled NO3 − leaching, similar to the yield-scaled GWP, represents another valuable-integrated metric to address the dual goals of reducing nitrogen pollution and maintaining crop grain yield for a given agricultural system.
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700 1 _ |a Zhu, Bo
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700 1 _ |a Brüggemann, Nicolas
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700 1 _ |a Bergmann, Jessica
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700 1 _ |a Wang, Yanqiang
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700 1 _ |a Butterbach-Bahl, Klaus
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773 _ _ |a 10.1007/s10021-013-9723-7
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856 4 _ |u https://juser.fz-juelich.de/record/153892/files/FZJ-2014-03363.pdf
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