秸秆还田影响农田土壤健康研究进展

Advance in the Effects of Straw Incorporation on Soil Health

  • 摘要: 秸秆还田是一种提升土壤肥力的资源化策略,通过增加土壤有机质和营养元素来改善土壤理化性质和生物活性,促进养分循环,保障农田土壤健康,但也可能影响下季作物生长、带来病虫害风险等,且秸秆还田效果受还田时间、方法、土壤类型等多种因素的影响。本文综述了我国秸秆资源和还田实践,其中秸秆作为肥料还田占秸秆资源化利用的50%以上;明确秸秆还田通过改善土壤结构、增加土壤保水保肥能力、促进微生物活性、提高土壤有机质含量等路径促进土壤健康。此外,本文指出农业管理措施、气候状况、土壤类型及其理化特性对还田效果均有影响。为提升还田效果,本文建议优化还田时机与技术,强化病虫害监测与防控,并根据具体条件制定差异化策略。同时,本文也指出了推广秸秆腐熟技术、剖析秸秆还田生态环境效应,以及拓展秸秆资源产业链等未来重点研究方向存在的问题及解决路径,为相关技术的深入研究与广泛应用提供理论支持和实践指导。

     

    Abstract: Straw incorporation is a resource utilization strategy and enhances soil fertility by increasing organic matter and nutrient elements in the soil, which improves soil physicochemical properties and biological activity, promote nutrient cycling and ultimately strengthens farmland health. However, straw incorporation may also impact crop growth and introduce risks related to pests and diseases. Besides, its effectiveness is influenced by factors such as timing, methods, and soil type. This article reviewed straw resources and incorporation practices in China, where the use of straw as fertilizer accounted for more than 50% of the resource utilization of straw. It clarified that straw incorporation promoted soil health through pathways such as improving soil structure, increasing the soil's ability to retain water and fertilizer, promoting microbial activity, and increasing soil organic matter content. Furthermore, the article noted that agricultural management practices, climate conditions, soil types, and their physical and chemical characteristics influenced the effectiveness of straw incorporation. To enhance the effectiveness of straw incorporation, the article suggested optimizing the timing and techniques, strengthening the monitoring and control of pests and diseases, and developing differentiated strategies based on specific conditions. Additionally, the article identified key future research directions, including promoting straw decomposition technology, analyzing the ecological and environmental effects of straw incorporation, and expanding the straw resource industry chain. These efforts aimed to provide theoretical support and practical guidance for the in-depth study and widespread application of related technologies.

     

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