目的 基于棉花早期阴燃特性，提出针对性的棉包包装方式及棉包储存方法。 方法 利用可控加热装置加热棉花， 采用 CO 传感器采集棉花受热所产生的 CO 气体， 并加以分析。 在模拟棉垛下， 使用CO 传感器结合多点测量法， 测量 CO 气体在棉垛内的散逸轨迹。 结果 棉花在温度为 120 ℃左右时开始产生 CO 气体并散逸， 并得出了棉花在不同温度下产生 CO 气体的速率。 阴燃前期， CO 在棉垛内以阴燃点为原点，沿着缝隙缓慢地向四周扩散，且 CO 气体浓度与缝隙大小呈反比。 结论 将棉包以单个或数个为单位，用阻燃 PE 膜包装或适当减小棉垛规模的存储方法可以缩短棉垛早期火灾预警时间。

Objective Based on the characteristics of cotton in the early stage of smoldering, pertinent packing way and storage method of cotton bale were put forward. Methods Cotton was heated with a controllable heating device, and the CO released during the heating process of cotton was collected and analyzed by a CO sensor. Using a simulated cotton pile, CO sensor and multi-point measurement were employed to measure the dissipation path of CO in cotton pile. Results CO was produced at 120 ℃ and begin to spread at the same time； The rates of CO gas production in the early stage of cotton smoldering at different temperatures were obtained； In the early stage of smoldering， CO was released along the crack with the smoldering point as the origin， and spread slowly to the surrounding； the CO concentration changed inversely with the gap size. Conclusion It was put forward that packaging cotton in single or multiple bale(s) with flame-retarded PE or reducing the size of cotton pile could shorten the early-warning time of cotton bale fire.