地膜覆盖与施肥对秸秆碳氮在土壤中固存的影响
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Effects of Plastic Film Mulching and Fertilization on the Sequestration of Carbon and Nitrogen from Straw in Soil
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图4. 秸秆添加后土壤有机碳与全氮含量的比值(a)及土壤中秸秆碳与氮含量的比值(b) |
Fig. 4. The percentage of soil organic carbon (SOC) to total nitrogen (TN) (a) and the percentage of straw derived-SOC (13C-SOC) to straw derived-TN (15N-TN) (b) in soil added with 13C15N-labeled straw under different mulching and fertilization treatments |
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