摘要
通过3株纤维素降解菌和1株酵母菌的单菌和混合菌发酵试验,确定2个优势生长菌群(A,B),以益生菌原液(C)和空白(D)为对照,将其应用于模拟发酵床猪粪腐解试验,拟筛选出高效发酵床猪粪腐解菌群。结果表明,A(TZ-4+酵母)和B(TZ-4+TZ-15+TZ-16+酵母菌)2个菌群对猪粪的腐解效果相当,均优于市售益生菌原液,B菌群中主要以TZ-4和酵母菌起腐解作用。腐解47d后,A菌群腐解垫料变黑,猪粪中水解性NH4+-N含量从初始8.31mg·g-1降低至0.57mg·g-1,种子发芽系数达到最高,为82%,整个发酵过程基本无恶臭味产生,pH始终保持在微生物的最适活性范围内。A菌群可作为腐解剂进一步应用于发酵床。
In order to screen a highly-efficient pig manure-decomposing microbial group for fermentation bed, single and mixed fermentation experiments were conducted, with three cellulose-decomposing microbial strains and one yeast strain as test objects, and taking the stock solution of probiotic bacteria and the blank as the controls. Two dominant microbial groups （A and B） were screened, and applied to the pig manure-decomposing test on a simulated fermentation bed. The A （TZ-4＋yeast） and B （TZ-4＋TZ-15＋TZ-16＋yeast） had the similar effect in decomposing pig manure, and the effect was better than that of the stock solution of probiotic bacteria. In group B, the TZ-4 and yeast played dominant role. After 47 days decomposition, the bedding with A turned black, the hydrolyzable NH4＋-N content in pig manure decreased from initial 8.31 mg·g-1 to 0.57 mg·g-1, and the seed germination coefficient was the highest （82%）. Nearly no stench generated during the whole process of fermentation, and the bed pH remained in an optimum range for microbial growth. It was suggested that the group A could be a promising decomposer agent for the fermentation bed.
出处
《生态学杂志》
CAS
CSCD
北大核心
2012年第3期659-663,共5页
Chinese Journal of Ecology
基金
江苏省自然科学基金项目(BK2009733)
江苏丘陵地区镇江农业科学研究所基金项目(zjs2008017)资助
关键词
腐解剂
纤维素降解菌
酵母菌
垫料
decomposer agent
cellulose- decomposing microbe
yeast
bedding.
