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Biodegradable plastics as alternatives for polyethylene mulch films

Advances in agronomy 2023 28 citations

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Polymers

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Are biodegradable plastic mulch films an effective way to solve residual mulch film pollution in farmland?

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This review finds that biodegradable plastic mulch films (BPM) may actually accelerate microplastic generation in agricultural soils compared to conventional films, while also disrupting soil microbial diversity and altering carbon and nitrogen cycles in unpredictable ways. The findings raise serious questions about whether switching to biodegradable plastics genuinely reduces pollution risk or simply shifts it to a different — and potentially more complex — form of soil contamination.

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