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本文对纯沼液和纯鸡粪养鱼进行了比较研究。结果表明,纯沼液养鱼每亩的净产量达808kg,纯鸡粪养鱼的净产量每亩只有227.5kg。前者的经济效益要比后者高2.5倍。作者从能量、氮和磷的投入产出、水体中浮游生物的含量以及溶解氧的变化情况等方面分析了增产的原因。通过试验,作者指出,沼液养鱼是提高农村废弃物资源的利用率和推动沼气的进一步发展的有效途径。
In this paper, pure biogas slurry and pure chicken manure were compared. The results showed that net production of pure marsh liquid fish per acre reached 808kg, net production of pure chicken manure and fish only 227.5kg per acre. The former’s economic efficiency is 2.5 times higher than the latter. The authors analyzed the reasons for the increase of production from aspects of energy, input and output of nitrogen and phosphorus, plankton in water and changes of dissolved oxygen. Through experiments, the author pointed out that biogas slurry culture is an effective way to improve the utilization rate of rural waste resources and promote the further development of biogas.