添加甘蔗渣对香蕉杆堆肥化过程中微生物种群的影响

以香蕉杆、鸡粪和甘蔗渣为堆肥原料,在自制的强制通风静态堆肥装置中进行堆肥试验,研究香蕉杆和甘蔗渣不同比例组合在其堆肥化过程中的微生物变化规律。结果表明：各处理的微生物种群总数呈“波浪型”的变化规律,其中细菌和放线菌种群的数量变化与微生物种群总数的变化规律一致,真菌种群的数量变化呈降低趋势。在整个堆肥化过程中,中温微生物数量始终高于高温微生物,细菌种群的数量也总是最高,是香蕉杆堆肥的优势菌群。结果同时表明,香蕉杆堆肥化处理中加入一定比例的甘蔗渣不仅可以提高堆肥的温度,还能提高微生物种群的数量。尤以香蕉杆：甘蔗渣＝3的处理效果最好。

Effect of Adding Bagasse on the Microbial Community During the Composting Process of Banana Straw

The compost test in the automatic composting device using banana straw, chicken manure and bagasse was conducted to analyse the dominant microorganisms changes under different proportional composition between banana straw and bagasse during the composting process. The results showed that the changes of the microbial total count were wavelike, the same as the changes of the count of bacterium and actinomycete, and the changes of the count of fungi were downtrend. During the whole compost, the count of the mesophilic microorganism was always more than that of the thermophilic, and the count of bacterium was always maximal. accordingly bacterium was the preponderant flora of banana straw compost. The result synchronously showed that it not only could elevate the composting temperature, but also could increase the count of microbial community by adding appropriate proportional bagasse in the treatment of banana straw composting. And the optimal ratio of banana straw to bagasse was three.