沼肥稻田生态养鱼试验

The Effect of Biogas Manure on Yields of Fish and Rice in Rice Fields

在条件基本相同的水稻大田期，进行了在大田内开挖生态养鱼沟、分别施用沼渣和沼液养鱼的试验，以不施用任何饲料的常规自然养鱼作对照。结果表明，施用沼渣和沼液的稻田鱼苗生长较快，每hmz产量283kg和268kg，比对照分别增加84．4kg和69．4kg，增幅为42．5％和34．9％；水稻每hmz产量8796kg和8664kg，比对照增加453kg和321kg，增幅为5．4％和3．8％；并减少了化肥投入，取得了较好的生态和经济效益。

The experiment was conducted to investigate the effect of biogas manure on yields of fish and rice in rice fields. The results showed that the fish yield with applying biogas sediment and biogas liquid was 283 kg/ha and 268 kg/ha, 42.5% and 34.9% higher than CK （without applying biogas manure and fish feed in rice fields） and the rice yield of applying biogas sediment and biogas liquid was 8796 kg/ha and 8664 kg/ha, 5. 4% and 3. 8% higher than CK respectively. The biological fish culture in rice fields can get the better biological and economical benefits.