棉花秸秆综合利用现状与研究进展

The current situation and research progress of comprehensive utilization of cotton straw

  • 摘要: 中国是世界上最大的棉花生产国之一, 棉花秸秆可收集资源量巨大, 具有较高的开发价值和丰富多样的利用方式。然而, 如何科学合理地利用棉花秸秆资源, 实现资源高效利用、棉花生产节本增效和农业绿色可持续发展, 是当前亟须解决的问题。本文基于统计数据和文献资料, 解析并总结了我国棉花秸秆五化(肥料化、饲料化、燃料化、基料化和原料化)的利用方式及研究进展。研究发现, 在肥料化方面, 棉花秸秆可通过还田、发酵以及高温热解等方式改善土壤结构, 提升土壤肥力; 在饲料化方面, 经过适当处理后棉花秸秆可作为反刍动物的饲料;在燃料化方面, 可通过发酵等方式将棉花秸秆转化为清洁能源; 在基料化方面, 棉花秸秆可用于栽培基质; 在原料化方面, 棉花秸秆可用于生产纸制品、板材等工业原料。然而,当前棉花秸秆利用仍存在收集困难、技术不成熟、成本较高、产业链不完善和农户对棉秆综合利用认识不足等问题。为此, 本文提出构建“技术-产业-政策”协同体系, 通过加强棉花秸秆综合利用的技术研发、优化产业链结构以及完善政策支持等改进措施, 推动棉花秸秆资源高效利用。本研究可为棉花秸秆的综合利用提供参考, 为我国棉花生产的可持续发展提供潜在方案。

     

    Abstract: China stands as one of the world's foremost producers of cotton, generating vast quantities of cotton stalks as agricultural byproducts. These stalks represent a highly abundant and renewable resource, with significant potential for exploitation across multiple domains due to their versatile applications and considerable economic value. However, the scientific and rational utilization of cotton stalk resources - to achieve efficient resource use, reduce production costs, and promote sustainable agricultural development - remains an urgent challenge. Based on statistical data and literature review, this article analyzes and summarizes the utilization methods and research progress of the five transformations of cotton stalk in China (fertilization, feed production, energy conversion, substrate preparation, and material utilization). The investigation demonstrates that regarding fertilization, cotton stalk can be effectively incorporated into agricultural systems through field-returning techniques, controlled fermentation processes, or high-temperature pyrolysis, all contributing to improved soil structure and enhanced nutrient availability. Concerning feed utilization, properly processed cotton stalk show potential as supplementary feed for ruminant livestock, providing a sustainable alternative to conventional feed materials. When employed as cultivation substrates, cotton stalk exhibit favorable characteristics for supporting plant growth in soilless cultivation systems. Regarding fuel utilization, advanced bioconversion methods including anaerobic digestion and solid-state fermentation enable transformation of cotton stalk into renewable energy sources such as biogas and bioethanol. Furthermore, in industrial raw material applications, cotton stalk serve as viable feedstock for manufacturing paper products, fiberboard, and similar engineered materials, thereby reducing dependence on traditional wood resources. However, there are still problems with the current utilization of cotton stalk, such as difficulties in collection, immature technology, high costs, and incomplete industrial chain, and insufficient awareness among farmers regarding comprehensive utilization. Despite these potential applications, persistent obstacles impede large-scale adoption of cotton stalk utilization strategies. Principal challenges include logistical difficulties in collection and transportation, insufficient mature and cost-efficient processing technologies, elevated operational costs, fragmented supply chains, and limited farmer awareness regarding economic and ecological benefits of cotton stalk recycling. To address these limitations, this study proposes implementing an integrated technology - industry - policy framework. The efficient utilization of cotton stalk resources is promoted by strengthening the technology research and development of comprehensive utilization of cotton stalk, optimizing the structure of the industrial chain, and improving policy support. This research provides valuable insights into the current state of cotton stalk utilization and proposes actionable recommendations to optimize its application, thereby contributing to the long - term sustainability of cotton production systems.

     

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