秸秆还田配施氮肥对稻田土壤活性碳氮动态变化的影响
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Nitrogen Fertilizer and Its Combination with Straw Affect Soil Labile Carbon and Nitrogen Fractions in Paddy Fields
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图4. 不同施氮时期处理中土壤微生物量碳氮含量 |
Fig. 4. Contents of SMBC and SMBN in soils under different nitrogen application time treatments |
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