Selection of Highly Efficient Degradation Bacteria and Preparation of Complex Microbial Inocula for Cow Dung Compost
LI Yu et al(College of Life Sciences,Northwest University,Xi'an,Shaanxi 710069)
[Objective] The aim was to determine the optimum compound proportion of strains.[Method] The strains were screened out from the natural compost of yak manure.With the fresh yak manure and rice hull flour as compost materials and the treatment without compound inocula as CK,different complex microbial inocula with total inoculation amount of 3‰ was inoculated into compost to study the effects of different treatments on maturity process of compost.[Result] The growth rates and activities of Trichoderma viride and Aspergillus oryzae from natural compost of yak manure were higher.In the treatment of T.viride ∶A.oryzae ∶ Bacillus subtilis ∶Pseudomonas sp.= 2∶2∶1∶1,the temperature increased the most fast and the temperature was the highest in fermentation process.It only needed 6 d when the temperature increased to 55 ℃ and the high temperature could maintained 8 d with the highest temperature of 65.5 ℃.After maturity of the compost,the germination index of plant seeds was 92.3%.[Conclusion] The optimum proportion of compound microbial inocula was T.viride ∶A.oryzae ∶Bacillus subtilis ∶Pseudomonas sp.= 2∶2∶1∶1.
【CateGory Index】： S141.4