College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China.
Ying Yong Sheng Tai Xue Bao. 2021 Feb;32(2):729-736. doi: 10.13287/j.1001-9332.202102.039.
Mulch-filmaccounted for more than half of plastic film used in Chinese agriculture. The wide utilization of mulch-film brings great economic value but also causes "white pollution". The residual film is difficult to be recycled and degraded, which directly affects soil regeneration. We introduced the current status of the plastic film usage in China and reviwed the research progress in its degradation. The biological and non-biological pathways and mechanisms of mulch-film degradation were summarized, with particular focus on the polyolefin degradation with synergistic effect of photocatalysis, metal ion doping as well as the impacts of different sources of bacteria and enzymes on the degradation efficiency of polyolefins. The more efficient degradation methods of plastic film are prospected. This review would provide reference for the further studies of plastic film degradation and microplastic degradation.
地膜用量占中国农用塑料薄膜的一半以上。地膜的广泛应用带来了巨大的经济价值，但也造成了“白色污染”。残膜难以回收降解，直接影响土壤再生。本文介绍了中国塑料薄膜的使用现状，并综述了其降解的研究进展。总结了地膜的生物和非生物降解途径和机制，特别关注了光催化、金属离子掺杂协同作用下的聚烯烃降解以及不同来源的细菌和酶对聚烯烃降解效率的影响。展望了更高效的塑料薄膜降解方法。本文为进一步研究塑料薄膜和微塑料的降解提供了参考。
