高效保水与种子萌发:木质素海藻酸钠凝胶球的合成及其土壤改良作用

doi:10.11896/cldb.24100194

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Abstract The accessibility of water is a critical ecological factor that constrains the sustainable development of agriculture. To mitigate the impact of drought on crop survival rates, nanocomposite hydrogel microspheres (SPL) were successfully synthesized by crosslinking sodium lignosulfonate (SL), sodium alginate (SA), and polyvinyl alcohol (PVA). And they are comprehensively characterized using techniques such as scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET) analysis, X-ray diffraction (XRD), thermogravimetric analysis (TGA), and Fourier-transform infrared spectroscopy (FTIR). The influence of SPL hydrogel on soil properties, such as conductivity and pH, was investigated, along with its impact on wheat germination and growth under drought conditions. The results show that the incorporation of lignin provides structural support to the SPL hydrogel, endowing it with a rich porous structure, which resulted in a maximum water absorption capacity of 441.52 g/g, which is higher than that of many other laboratory-prepared hydrogel water-retention materials. The addition of SPL hydrogel has no significant effect on soil conductivity and pH, but it significantly improves soil water retention by approximately 20%. Under drought environment, wheat treated with SPL hydrogel exhibits higher germination rates and growth indicators, including plant height, root length, and fresh weight. This low-cost, rapidly prepared, and highly water-retentive hydrogel shows great potential for application in agricultural soil amelioration.

Key words： lignin sodium alginate hydrogel agricultural utilization plant growth

Published: 10 December 2025 Online: 2025-12-03

CLC number:

TQ352

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	Articles by authors
	ZHANG Zhenhao
	ZHAO Chenxi
	ZHU Feiyu
	TANG Xin
	SHENG Jie
	YANG Fangyuan

Cite this article:

ZHANG Zhenhao,ZHAO Chenxi,ZHU Feiyu, et al. Efficient Water Retention and Seed Germination :Synthesis of Lignin Sodium Alginate Gel Beads and Their Soil Improvement Effects[J]. Materials Reports, 2025, 39(23): 24100194-8.

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https://www.mater-rep.com/EN/10.11896/cldb.24100194 OR https://www.mater-rep.com/EN/Y2025/V39/I23/24100194

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