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[目的]研究沼气肥的营养成分及应用效果。[方法]对贵池区沼气生态示范村的沼气肥、土壤、水稻秧苗进行农化常规分析。[结果]沼渣中有机质、N、P、K含量较沼液中含量高,但二者的养分含量较全面;沼渣中的C/N比值较高,沼液中的C/N比值较低,沼液中氮与有机质相关性较好,而沼渣中则表现不明显;沼液中钾的含量高且变化很大。施沼渣的农田有机质等养分含量较对照农田高。施沼气肥土壤种植的水稻N、P、K含量比未施沼气肥的高,尤其是K的含量增长明显。[结论]沼气肥含有丰富的营养物质,可以改善土壤有机质的C/N比值。沼渣中有机质含量丰富适合作底肥,沼液中速效养分含量较高适合作追肥。
[Objective] To study the nutrient composition and application effect of biogas fertilizer. [Method] The biogas fertilizer, soil and rice seedlings of biogas demonstration village in Guichi were routinely analyzed for their agrochemicals. [Result] The content of organic matter, N, P and K in biogas residue was higher than that in biogas slurry, but the nutrient content in the biogas residue was more comprehensive. The C / N ratio in biogas residue was higher, and the C / N ratio in biogas slurry was Low, biogas slurry nitrogen and organic matter correlation is good, and biogas residue was not obvious; biogas slurry in the high content of potassium and great changes. Biogas residue farmland organic matter and other nutrients higher than the control farmland. The content of N, P and K in rice planted with biogas fertilizer was higher than that without biogas fertilizer, especially the content of K increased obviously. [Conclusion] Biogas fertilizer is rich in nutrients and can improve the C / N ratio of soil organic matter. Biogas residue rich in organic matter suitable for base fertilizer, biogas slurry in the higher effective nutrient content for top dressing.