双孢蘑菇培养料发酵微生物变化对其理化性质的影响研究

为研究双孢蘑菇培养料一次发酵过程中的微生物变化对其理化性质的影响，以西北冷凉区大麦秸秆为主要原料，在双孢菇培养料发酵过程中，研究微生物数量、纯蛋白氮、总糖、木质素、纤维素、半纤维素、微量元素、温度、pH等指标的变化。研究发现随着培养料发酵的进行，细菌、放线菌和真菌3类微生物的数量均表现为先上升后下降的趋势；纯蛋白氮、木质素呈上升趋势；总糖、纤维素、半纤维素表现为逐渐下降的趋势；发酵期间培养料中的温度、pH呈周期性变化，分别随翻堆递增、递减；微量元素锌、铜、锰、铁的含量随着培养料的发酵而上升。本研究探明了双孢蘑菇培养料一次发酵过程中微生物和部分理化指标的变化规律，为双孢蘑菇培养料优化发酵提供理论依据。

Study of the Influence of Microorganisms in the Process of Agaricus bisporus Compost Fermentation on Its Physical and Chemical Properties

The study aims at the influence of microorganisms in the process of Agaricus bisporus compost primary fermentation on its physical and chemical properties. Research was carried out on the variation of microbial population, pure protein, total sugar, lignin, cellulose, hemicellulose, microelement, temperature and pH indicators in the process of Agaricus bisporus compose fermentation. With the fermentation conducted, the amount of three categories of microorganisms, including bacteria, actinomycete and increasing trend at first increased and then a downward trend. Pure protein was fungus, all showed that an on the raise; total sugar, cellulose and hemicellulose were on downward trend, the temperature and pH of compost showed cyclical variations during the fermentation period, increased and decreased with turning heaps. The variation of zinc content of microelement did not increase significantly, iron, copper and manganese content rose as fermentation of compost. The variation characteristics of the microorganisms and partials physicochemical indices in the Agaricus bisporus compost were obtained, which provided theoretical basis for studying the highefficient fermentation ofAgaricus bisporus compost.