数字农科院2.0

Humic Acid Biodegradable Film Increased Yam Yield and Total Soluble Sugar Content by Reshaping Soil Microbial Community Structure

文献类型： 外文期刊

作者： Lu, Lu;Lu, Zewei;Zou, Wenwu;Li, Kun;Liu, Jing;Pan, Jiahao;Sun, Mintao;Wang, Jun;Li, Yansu;Yan, Yan

作者机构：

关键词： Yam;biodegradable film;humic acid;soil microorganisms;yield;quality

期刊名称： PHYTON-INTERNATIONAL JOURNAL OF EXPERIMENTAL BOTANY

ISSN： 0031-9457

年卷期： 2026 年

页码：

收录情况： SCIE（2025版）

摘要： To address the issue of residual pollution caused by polyethylene mulch, this study explored the effects of different mulching methods on the soil environment of the yam field, as well as on yam yield and quality. The experiment comprised six treatments in total: one non-mulched treatment served as the control (CK), along with five different film-mulched treatments, namely PE, FZS12, FZS15, FC12, and FC15. The degradation of these films and their effects on soil physicochemical properties, microbial community, yam yield and quality were compared. The results showed that the FZS12 treatment achieved grade 5 degradation by the end of the planting period. Compared with PE treatment, the total soluble sugar content and yield of yam treated with FZS12 were significantly increased by 35.78% and 74.97%, respectively (p < 0.05). Compared with CK and PE treatments, FZS12 significantly increased soil available nitrogen by 31.62% and 6.20%, respectively (p < 0.05), and significantly increased soil available phosphorus by 8.58% and 4.45%, respectively (p < 0.05). Soil pH, available nitrogen, and available phosphorus were the main environmental factors affecting the soil bacterial community. The FZS12 treatment significantly increased the relative abundances of soil bacteria phylum including Acidobacteriota, Myxococcota, Patescibacteria, and Proteobacteria compared with the CK and PE treatments. Functional prediction using Picrust2 revealed that the FZS12 treatment had significantly higher levels of signal transduction and amino acid metabolism than the CK and PE treatments. In conclusion, covering with 12 m PBAT/PLA humic acid biodegradable film enhances yam yield and total soluble sugar content by shaping beneficial soil microbial communities, activating soil nutrients.

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