Self-Irrigation and Slow-Release Fertilizer Hydrogels for Sustainable Agriculture

IF 9.6 1区化学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY ACS Materials Letters Pub Date : 2024-07-03 DOI:10.1021/acsmaterialslett.4c01120

Jungjoon Park, Weixin Guan, Chuxin Lei, Guihua Yu

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Abstract

Given the critical need for more efficient water and nutrient utilization to optimize crop yields, effective strategies in water and nutrient management are essential. The development of a self-irrigation and slow-release fertilizer hydrogel (SISRH) represents a promising approach. SISRH, a hydrogel with hygroscopic polymer chains interpenetrated by a thermoresponsive network, enhances plant growth through controlled yet self-sustained water and nutrient delivery. The hydrogel demonstrates diurnal functionality: it absorbs water vapor at night and releases it during the day due to a phase transition in the polymer, with incorporated calcium chloride (CaCl₂) further improving hygroscopic properties and controlled nutrient release. SISRH facilitates a slow-release of nutrients and can achieve ∼40% water savings, significantly reducing the need for frequent irrigation and ensuring robust crop development. The integration of SISRH in soil offers a promising solution to meet the pressing needs of water scarcity and efficient nutrient uptake in modern sustainable agriculture.

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用于可持续农业的自灌溉和缓释肥料水凝胶

鉴于提高水分和养分利用效率以优化作物产量的迫切需要，有效的水分和养分管理策略至关重要。自灌溉和缓释肥料水凝胶（SISRH）的开发是一种很有前景的方法。SISRH 是一种具有吸湿性聚合物链的水凝胶，通过热致伸缩网络相互渗透，可通过可控且自我维持的水分和养分输送促进植物生长。这种水凝胶具有昼夜功能：夜间吸收水蒸气，白天通过聚合物的相变释放水蒸气，其中的氯化钙（CaCl2）进一步改善了吸湿性能和可控的养分释放。SISRH 有利于养分的缓慢释放，可节水 40%，大大减少了频繁灌溉的需要，确保作物生长旺盛。SISRH 与土壤的结合为满足现代可持续农业对缺水和高效养分吸收的迫切需求提供了一种前景广阔的解决方案。

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来源期刊

ACS Materials Letters MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

14.60

自引率

3.50%

发文量

261

期刊介绍： ACS Materials Letters is a journal that publishes high-quality and urgent papers at the forefront of fundamental and applied research in the field of materials science. It aims to bridge the gap between materials and other disciplines such as chemistry, engineering, and biology. The journal encourages multidisciplinary and innovative research that addresses global challenges. Papers submitted to ACS Materials Letters should clearly demonstrate the need for rapid disclosure of key results. The journal is interested in various areas including the design, synthesis, characterization, and evaluation of emerging materials, understanding the relationships between structure, property, and performance, as well as developing materials for applications in energy, environment, biomedical, electronics, and catalysis. The journal has a 2-year impact factor of 11.4 and is dedicated to publishing transformative materials research with fast processing times. The editors and staff of ACS Materials Letters actively participate in major scientific conferences and engage closely with readers and authors. The journal also maintains an active presence on social media to provide authors with greater visibility.