The application of organic manure and organic manure combining with chemical fertilizer were the best on maintaining the soil fertility by improved the soil carbon and nitrogen pool.
有机肥料与化学肥料配合施用能够提高土壤碳氮库容,是维持土壤肥力的最优施肥方式。
参考来源 - 长期不同施肥对红壤碳氮储量的影响·2,447,543篇论文数据，部分数据来源于NoteExpress
土壤界面过程，土壤碳氮循环及其调控机制，土壤温室气体排放；
Atmosphere-plant-soil interface, carbon and nitrogen cycling in the soil and underlying mechanisms, emission of greenhouse gases from the soil;
土壤中的氮素主要以有机氮的形式存在于土壤有机质中， 土壤碳氮比与有机质含量显著相关。
The N in the SOM existed mainly in the form of organic nitrogen, and the soil C:N was significantly correlated with SOM.
土壤储存有机碳，但会释放甲烷和一氧化二氮。
Soil stores organic carbon, but can emit methane and nitrous oxide.
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