对新疆特色农业废弃物棉渣进行堆肥化处置，以牛粪为调理剂，采用人工翻堆的方法进行高温好氧堆肥试验，研究添加牛粪对棉渣堆肥发酵的影响，探讨堆肥过程中不同部位物料理化性质的差异，并依据发芽指数（ GI）评价物料的腐熟程度。结果表明，添加牛粪可以加速物料升温，提高主发酵温度，缩短发酵时间，添加牛粪处理的T值（终点C／N与初始C／N之比）比对照组提前12 d降到0�6以下，且发酵后GI较高，对植物毒性较小。不同部位温度的变化，以中层升温最快，温度最高。中层总有机碳（ TOC ）下降速率和总氮（ TN）上升速率最快，深层次之，表层最慢。深层易形成厌氧区，物料腐熟较慢，堆肥腐熟之前深层GI最低，完全腐熟之后各层之间理化性质无显著差异。%Cotton slags, characteristic agriculture wastes in Xinjiang Province, were applied in the present study for composting. Cattle manure was added as conditioning agent to explore its effects on cotton slags composting, as well as to reveal the differences of physicochemical properties of material in different depths during composting. The matu⁃rity was evaluated on the basis of germination index ( GI) . It was shown that addition of cattle manure could acceler⁃ate the heating up of material, increase the primary fermentation temperature, and shorten the fermentation time. Compared with control, the T index ( ratio between final and initial C/N) was reduced to 0�6 in advance of 12 d, and GI was increased with cattle manure added, indicating a lower phytotoxicity. The temperature in the middle layer rose the fastest and was the highest. The increase rate of TOC ( total organic carbon) and decrease rate of TN ( total nitrogen) in the middle layer was also the greatest, and was followed by the bottom layer and then the surface layer. Due to the easily generated anaerobic zone in the bottom layer, material decomposed slower there, and GI was the lowest before fully composting. After composting, there was no obvious difference of physicochemical properties in different depths.
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