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以奶牛粪便和稻草秸秆为原料,进行高温好氧堆肥过程中物料理化特性转变的研究。研究结果表明,堆肥物料先后经历了升温期、高温期和降温期。高温阶段堆体温度达到57℃,高温期维持9d;经降温期充分腐熟,堆肥物料中的有机质含量明显降低。堆肥过程结束后,堆肥产品中的TN、NO3--N、TP和速效磷等含量均有增加,增幅分别为22.45%、41.46%、68.98%和13.60%;堆肥物料中营养元素的植物利用有效性得到提高。经过高温好氧堆肥处理后,牛粪可实现无害化、稳定化和资源化。
The cow manure and straw as raw materials, high-temperature aerobic composting process of physical and chemical properties of the transformation. The results show that composting materials have experienced a heating period, high temperature and cooling period. During the high temperature period, the temperature of the pile body reached 57 ℃ and the high temperature period was maintained for 9 days. The organic matter content of the compost material decreased significantly after the maturity of the cooling period. After composting process, the content of TN, NO3 - N, TP and available phosphorus in composting products increased by 22.45%, 41.46%, 68.98% and 13.60% respectively. The plant utilization of nutrients in composting materials was effective Sex is improved. After high-temperature aerobic composting, cow dung can be detoxified, stabilized and recycled.