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1Does elevated atmospheric carbon dioxide concentration increase wheat nitrogen demand and recovery of nitrogen applied at stem elongation?
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来源：AGRICULTURE ECOSYSTEMS & ENVIRONMENT
关键词： Free-air carbon dioxide enrichment (FACE) Fertilizer recovery 15N N application rate Winter wheat
2The effect of increased atmospheric carbon dioxide concentration on emissions of nitrous oxide, carbon dioxide and methane from a wheat field in a semi-arid environment in northern China
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机构：
来源：SOIL BIOLOGY & BIOCHEMISTRY
关键词： Carbon dioxide Crops Emission measurements Carbon dioxide Crops Emission measurements Emissions Greenhouse gases Methane Semiarid environments Soil wheat Triticum aestivum China People's Rep.
3Effect of elevated carbon dioxide on growth and nitrogen fixation of two soybean cultivars in northern China
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机构：
来源：BIOLOGY AND FERTILITY OF SOILS
关键词： Free-air carbon dioxide enrichment (FACE) Symbiotic nitrogen fixation Natural abundance Soybean cultivar
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