以沼气为纽带的生物循环生态模式研究

介绍了仪征市久闻农业科技示范园以沼气为纽带,通过沼气、沼液、沼渣的综合利用,形成了以"鸭粪喂猪、猪粪产沼、沼气育雏、沼液养鱼、沼渣肥林(菜)"为主的"鸭—猪—沼—鱼(林、菜)"循环生态模式,并完善了相应的配套技术。该模式的应用,使得畜禽生产的粪便污水等污染物得到了有效处理和利用,改变了园区的卫生状况,改善了生态环境;实现了资源的高效合理循环,减少了企业生产生活过程中燃料、肥料、饲料等投入,降低了生产成本,取得了较好的经济效益。

Yizheng City Jiu-Wen Agricultural Science and Technology Demonstration Park, which puts biogas as a link, by comprehensive utilization of biogas slurry and biogas residue, has formed a recycling ecological model of ＂ducks - digs - biogas - fish or forest or vegetables＂. The model is that duck excrement for feeding pigs, pig excrement fermentation to produce biogas, biogas warming to nurture ducklings, biogas slurry for fishing, biogas slun＇y and biogas residue for planting forest or vegetables. Application of the recycling ecological model, which effectively treated and reused the excrement and sewage of livestock and poultry, has changed the health situation in the park, and improved the ecological environment. It also became a efficiently reasonable recycle of resources, reducing the use of fuel, fertilizer, feed and other inputs, lowering production costs.