Emissions of N2O from Scottish agricultural soils, as a function of fertilizer N

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作者
Keith A. Smith
Iain P. McTaggart
Karen E. Dobbie
Franz Conen
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arable crops; global warming; grassland; nitrogen fertilizer; nitrous oxide; soils;
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摘要
Potato fields and cut (ungrazed) grassland in SE Scotland gave greater annual N2O emissions per ha (1.0–3.2 kg N2O–N ha-1) than spring barley or winter wheat fields (0.3–0.8 kg N2O–N ha-1), but in terms of emission per unit of N applied the order was potatoes > barley > grass > wheat. On the arable land, especially the potato fields, a large part of the emissions occurred after harvest.
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页码:123 / 130
页数:7
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