Synthesis of a slow-release fertilizer composite derived from waste straw that improves water retention and agricultural yield

文献类型： 外文期刊

第一作者： Wang, Weishuai

作者： Wang, Weishuai;Yang, Shiqi;Zhang, Aiping;Yang, Zhengli;Yang, Shiqi;Yang, Zhengli

作者机构：

关键词： Straw cellulose; Semi-interpenetrating polymer networks; Water retention; Slow-release; Fertilizer

期刊名称：SCIENCE OF THE TOTAL ENVIRONMENT （ 影响因子：7.963； 五年影响因子：7.842 ）

ISSN： 0048-9697

年卷期： 2021 年 768 卷

页码：

收录情况： SCI

摘要： To enhance waste straw utilization and improve fertilizer efficiency, a novel semi-interpenetrating polymer network fertilizer (CMCK-g-PAA/PDMUP) was prepared from straw cellulose and linear polymer by solution polymerization. Polydihydroxymethyl-urea potassium phosphate (PDMUP) was included to supply nitrogen, phosphorus, and potassium nutrients. Characterization of CMCK-g-PAA/PDMUP with FITR, XPS, XRD, and SEM techniques provided evidence for semi-interpenetrating polymer networks (semi-IPNs) and component interactions. The prepared product exhibited excellent water absorbency (681.3 g/g) and enhanced the soil's water-retention capacity. Cumulative release of N, P. and K was 56.1%, 64.3%, and 74.1%, respectively, after 40 days-meeting a Committee of European Normalization (CEN) standard. Agricultural application of CMCK-g-PAA/PDMUP promoted wheat growth. Desirable water retention, slow-release properties, and wheat growth effects highlight the product's potential for improving agriculture. (C) 2021 Elsevier B.V. All rights reserved.

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