蚯蚓与EM菌协同作用处理猪粪的研究

[目的]研究蚯蚓与EM菌协同作用处理猪粪的效果,为合理有效地利用和处理畜禽粪便提供新思路。[方法]以猪粪为培养基,将试验分为4组,分别为空白（CK）组、接种EM菌（EM）组、接种蚯蚓（EAM）组以及同时接种蚯蚓和EM菌（EAM＋EM）组,试验时间为60 d。分别在0、15、30、45和60 d时收集猪粪样品,测定总有机碳（TOC）、全氮（TKN）、铵态氮和硝态氮含量。[结果]与对照组相比,60d后EAM＋EM组产物中总有机碳降低了42.8%,全氮提高了13.6%,碳氮比下降了49.5%;铵态氮的转化率达98.1%,硝态氮增加了96倍,硝态氮与铵态氮的比值达到61;水溶性碳下降了58.9%。[结论]蚯蚓和EM菌的协同作用能够加快猪粪的腐熟,提高产物的矿化程度和稳定程度。

Synergistic Effects of Eisenia foetida and Effective Microorganisms on Vermicomposting of Pig Manure

[Objective]To explore the synergistic effects of Eisenia foetida and effective microorganisms(EM) on vermicomposting of pig manure and provide a new idea for rational and effective utilization and treatment of animal manure.[Method] Use pig manure as medium,the experiment contained four groups which were CK group(blank control),EM group(inoculation with EM bacteria),EAM group(inoculation with earth-worm),and EAM and EM group(inoculation with EM bacteria and earth-worm),respectively.The experiment lasted for 60 d.On Day 0,15,30,45 and 60,the pig manure was collected,and the content of total organic carbon(TOC),total Kjeldahl nitrogen(TKN),ammonium nitrogen(NH4+-N),nitrite nitrogen(NO3——N) and water soluble carbon(WSC) was determined,respectively.[Result] On Day 60,in the EAM and EM treatment group,the TOC content and the WSC content was respectively decreased by 42.8% and 58.9%;the TKN content was increased by 13.6%,the C/N ratio was reduced by 49.5%;and the nitrite nitrogen content was 96 times as high as that on Day 0.[Conclusion] The synergy of earthworms and EM bacteria can accelerate the pig manure composting and improve the mineralization and stability of products.