Coal-bearing kaolinite-based plant growth-promoting fertilizer with integrated slow-release and water-retention properties.

IF 8 1区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Science of the Total Environment Pub Date : 2025-01-10 Epub Date: 2025-01-04 DOI:10.1016/j.scitotenv.2024.178235

Yi Zhou, Guocheng Lv, Qinwen Zheng, Xiaotong Yang, Libing Liao

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Abstract

The development of ecological fertilizers has become crucial in modern agriculture due to the increasing global population and diminishing arable land resources. Herein, a plant growth-promoting fertilizer (UKS) with dual functions of slow-release and water-retention was prepared by combining liquid-phase intercalation method and crosslinking gel method. The physicochemical properties of UKS were analyzed and its dissolution, slow-release, and water-retention properties were systematically evaluated. The intercalation ratio was able to reach 53.3 % after intercalation for 5 days, exhibiting the slow-release potential of nitrogen fertilizer. The incorporation of sodium alginate improved the mechanical strength of the frame structure and effectively enhanced the water retention and slow-release properties of the fertilizer. Moreover, the cultivation experiments had shown that UKS can promote the growth of crops' leaves and roots, as evidenced by the fact that the length of them reached 9.8 cm and 5.4 cm, representing a respective growth of 16.8 % and 16.9 %, respectively. This strategy delivers a new approach for the development of eco-friendly agricultural fertilizers, and also provides a potential way to use coal-based solid waste for ecological restoration nearby.

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具有综合缓释保水性能的含煤高岭石植物促生肥料。

随着世界人口的不断增加和耕地资源的不断减少，生态肥料的开发已成为现代农业发展的关键。本研究采用液相插层法和交联凝胶法制备了一种具有缓释和保水双重功能的植物促生长肥料（UKS）。分析了UKS的理化性质，并对其溶出、缓释和保水性能进行了系统评价。插补5 d后，插补率可达53.3%，显示出氮肥的缓释潜力。海藻酸钠的掺入提高了框架结构的机械强度，有效提高了肥料的保水和缓释性能。此外，栽培试验表明，UKS可以促进作物叶片和根系的生长，叶片和根系的长度达到9.8 cm和5.4 cm，分别增长16.8%和16.9%。这一策略为开发环保农业肥料提供了新的途径，也为利用煤基固体废物进行附近的生态恢复提供了一种潜在的方法。

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来源期刊

Science of the Total Environment 环境科学-环境科学

CiteScore

17.60

自引率

10.20%

发文量

8726

审稿时长

2.4 months

期刊介绍： The Science of the Total Environment is an international journal dedicated to scientific research on the environment and its interaction with humanity. It covers a wide range of disciplines and seeks to publish innovative, hypothesis-driven, and impactful research that explores the entire environment, including the atmosphere, lithosphere, hydrosphere, biosphere, and anthroposphere. The journal's updated Aims & Scope emphasizes the importance of interdisciplinary environmental research with broad impact. Priority is given to studies that advance fundamental understanding and explore the interconnectedness of multiple environmental spheres. Field studies are preferred, while laboratory experiments must demonstrate significant methodological advancements or mechanistic insights with direct relevance to the environment.

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ferric chloride (FeCl3)