摘要
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。
A comparative study on fish culture fed only with slurry digested and with chicken manure had been done in this paper. The results showed that the net fish yeilds for the ponds fed only with slurry digested and with chicken manure were 12,120 kg/ha and 3,412.5 kg/ha respectively. The net profit of the former has increased by 2.5 times as compared with that of the latter.The reasons why fish culture with slurry digested can increase fish yield so obviously had been examined by authors through analysis of input-output of energy, N, P and biomass of plankton as well as the changes of DO in fish poud.And they suggested that it is an effective way to raise utilization rate of waste resources and to promote the further development of biogas digester system in rural areas by means of liquid slurry digested to culture fish.
出处
《农村生态环境》
CSCD
1989年第2期12-17,共6页
Rural Eco-Environment
