多孔淀粉固定化堆肥用微生物菌剂的制备条件优化及其堆肥效果验证

Preparation optimization and performance validation of microbial agent for porous starch immobilized compost

为提升菌渣的堆肥效率,研制了一种保质期较长且可应用于堆肥体系中的固态微生物菌剂。利用堆体中筛选出的微生物制备了混合菌液M,利用多孔淀粉作为吸附载体对其进行吸附,并经冷冻干燥得到包埋基础产品固态菌剂D,然后采用包埋技术将D制成固态菌剂Q。结果表明,新鲜制备的3个阶段微生物菌剂(M、D、Q)的各项指标均符合国家标准;制备3个月后,菌剂Q的存活率仍高达47.69%,远高于菌剂M的0,与比菌剂D提高了8.10%;最终堆肥验证中,菌剂D、Q表现出明显的优势,堆肥过程启动得更早,且腐殖酸含量分别提高了2.61%、3.44%,故菌剂Q的性能最佳。利用"吸附-包埋"技术制备固态菌剂可行且效果明显,可为微生物菌剂的制备提供参考。

To develop a solid microorganism having a longer shelf life and can be applied to the slag composting system, the mixed bacteria prepared by the microorganisms screened in the stack is prepared by"adsorption-embedded " fixation techniques. A novel solid fungicide Q is prepared by adsorbing the mixed carbide using a porous starch as an adsorption carrier, freeze-drying to obtain a embedding base product, which is recorded as a solid fungicide D, and using embedding techniques to the base product. Results show that the various indicators of freshly prepared microbacterial agents(M, D, Q) meet the national standards. After three months, the survival rate of the bacterioside Q is as high as 47.69%, which is much higher than the 0% of the bacteriosida. It increased by 8.10% compared to the bacterial agent D. In the final compost, the fungicides D and Q showed significant advantages, whereby the compost was started earlier and the humic acid content increased by 2.61%, 3.44% respectively. The bactericide Q showed the optimal performance. The preparation of solid fungicide using the "adsorption-embedded" fixation techniques was demonstrated to be feasible and satisfactory,which can provide reference for the preparation of microbial agents.