Effects of plastic particles on germination and growth of soybean (Glycine max): A pot experiment under field condition

文献类型： 外文期刊

第一作者： Li, Bintao

作者： Li, Bintao;Huang, Shan;Yang, Xiaomei;Li, Bintao;Huang, Shan;Yang, Xiaomei;Huang, Shan;Cheng, Wanli;Fan, Tinglu;Yang, Xiaomei;Wang, Haoming;Liu, Mengjuan;Xue, Sha;Tang, Darrell;Yang, Xiaomei

作者机构：

关键词： Plastic residue; Low density polyethylene; Biodegradable plastic; Plastic film; Plant germination; Plant biomass

期刊名称：ENVIRONMENTAL POLLUTION （ 影响因子：8.071； 五年影响因子：8.35 ）

ISSN： 0269-7491

年卷期： 2021 年 272 卷

页码：

收录情况： SCI

摘要： Plastic residues have become a serious environmental problem in areas where agricultural plastic film are used intensively. Although numerous of studies have been done to assess its impacts on soil quality and crop yields, the understanding of meso-plastic particles effects on plant is still limited. In this study, low density polyethylene (PE) and biodegradable plastic (Bio) mulch film were selected to study the effects of meso-plastic debris on soybean germination and plant growth with the accumulation levels of 0%, 0.1%, 0.5% and 1% in soil (w: w, size ranging 0.5-2 cm) by a pot experiment under field condition. Results showed that the germination viability of soybean seeds was reduced to 82.39%, 39.44% and 26.06% in the treatments with 0.1%, 0.5% and 1% added plastic debris compared to the control (CK), respectively, suggesting that plastic residues in soil inhibit the viability of soybean seed germination. The plastic debris had a significant negative effect on plant height and culm diameter during the entire growth stage of soybean. Similarly, the leaf area at harvest was reduced by 1.97%, 6.86% and 11.53% compared to the CK in the treatments with 0.1%, 0.5% and 1% plastic debris addition, respectively. In addition, the total plant biomass under plastic addition was reduced in both the flowering and harvesting stages, compared to the CK. For the different type of plastic residues, plant height, leaf area and root/shoot ratio at group PE were significantly lower than those of groups treated by Bio. In conclusion, PE debris had a greater negative effects on plant height, culm diameter, leaf area and root/shoot ratio while Bio debris mainly showed the adverse effects on germination viability and root biomass especially at the flowering stage. Therefore, further research is required to elaborate plastic particles' effects on different stages of crops and soil quality. (C) 2020 Elsevier Ltd. All rights reserved.

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