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globalchange

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climate change(2)
nitrous oxide(2)
agricultural management practices(1)
agricultural policy(1)
carbon footprint(1)
greenhouse gases(1)
irrigation(1)
life cycle assessment(1)
maize(1)
meta-analysis(1)
nitrogen fertilizers(1)
paddy field(1)
residue retention(1)
soils(1)
wheat(1)