<br>通过碱性热水解工艺从污水污泥中提取营养物和生物刺激素用于农用的双重优势：土壤和农作物的质量提升,Advanced Science

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通过碱性热水解工艺从污水污泥中提取营养物和生物刺激素用于农用的双重优势：土壤和农作物的质量提升
Advanced Science ( IF 14.3 ) Pub Date : 2024-01-19 , DOI: 10.1002/advs.202307793
Jiahou Hao ₁ , Bingbing Li ₂ , Jiayi Tan ₁ , Yue Zhang ₃ , Xuejia Gu ₄ , Shuo Wang ₁ , Yun Deng ₁ , Xiaokai Zhang ₁ , Ji Li ₁

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污水污泥的低碳碱性热水解生产高质量的促进植物生长的营养物质和生物刺激剂是农业污泥资源化利用日益受到关注的问题。因此，本研究旨在研究污水污泥来源的营养物和生物刺激剂（SS-NB）的功能特征和土壤生化效应。 SS-NB组中重金属含量下降了47.39%~100%，土壤蛋白酶、蔗糖酶和土壤养分利用率有所增加。 SS-NB替代化肥增加了微生物群落的多样性和均匀性，降低了土传细菌节杆菌属的丰度。 SS-NB100群的优势群落主要富集Microvirga 、 Ensifer、Novosphingobium 、 Bosea和Ellin6055 ，它们是植物的主要有益共生菌，参与C、N循环。此外，SS-NB还减少了参与CO ₂和N ₂ O产生的Ktedonobacteria和Nitrosospira的积累，增强了土壤微生物与酶活性和养分利用率的协调性。总之，结果表明SS-NB对减少温室气体排放和预防土传病害具有积极作用，并且可以通过刺激土壤微生物进一步增强与土壤酶活性和土壤养分利用的协同作用。

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Double Advantages of Nutrients and Biostimulants Derived from Sewage Sludge by Alkaline Thermal Hydrolysis Process for Agricultural Use: Quality Promotion of Soil and Crop

Low-carbon alkaline thermal hydrolysis of sewage sludge for the production of high-quality plant-growth-promoting nutrients and biostimulants is a growing concern for sludge resource utilization in agriculture. Thus, this study aims to investigate functional characteristics and soil biochemical effects of sewage sludge-derived nutrients and biostimulants (SS-NB). The content of heavy metals in SS-NB decreased by 47.39–100%, and an increase in soil protease, invertase, and soil nutrient utilization rates are observed in SS-NB groups. SS-NB substituted for chemical fertilizer increased the diversity and evenness of microbial community and reduced the abundance of the soil-borne bacterial genus Arthrobacter. The dominant community of SS-NB100 group is mainly enriched in Microvirga, Ensifer, Novosphingobium, Bosea and Ellin6055, which are principally beneficial symbiotic bacteria of plants and participated in C and N cycles. Moreover, SS-NB reduced the accumulation of Ktedonobacteria and Nitrosospira, which are involved in the production of CO₂ and N₂O, and also enhanced the coordination of soil microorganisms with enzyme activities and nutrient utilization rate. In conclusion, the results suggest that SS-NB exerts a positive effect on reducing greenhouse gas emissions and preventing soil-borne diseases, and can further enhance collaboration with soil enzyme activity and soil nutrient utilization by stimulating soil microorganisms.

更新日期：2024-01-19

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