关键词: 家蝇幼虫, 猪粪, 大肠埃希菌, 粪臭素, 化学需氧量, 生化需氧量

Abstract: Objective To observe the treatment results and the quantitative change of 3 MI,COD and BOD₅ in the pig manures after housefly larvae treated. Methods About 4 000 housefly adults were random selected. Their eggs laid in height period of oviposition incubated in pig manure. Housefly larvae and surplus manure were weighted after one week of the treatment manure,and change of the number of colibacillary colony was observed. The contents of 3-MI,COD,BOD₅and NH ₃-N were detected in treated and non treated pig manure. Results The weight of the pig manure averagely decreased to 53.73%54.83% of untreated manure,weight of larvae is 10.49%-11.34% of the pig manure. The colibacillarg colong in manure treated per grom was 99.96% less than that untrented. The contents of 3-MI,COD and BOD ₅ in the treated pig manure were 92.80% ,54.20% and 75.30% than those in untreated manure,respectively. The variation was significant (P<0.01). But the content of NH ₃ N decreased 6.30% only with out significant variation(P> 0.05). Conclusion These results showed that it is possible of reduce discharge of manure and the contents of 3 MI,COD and BOD in the pig manure. To reduce the environment pollution of pig manure by treating pig manure with housefly larvae.