Effect of biochar and hydrochar from cow manure and reed straw on lettuce growth in an acidified soil

文献类型： 外文期刊

第一作者： Yin, Shaojing

作者： Yin, Shaojing;Zhang, Xin;Suo, Fengyue;You, Xiangwei;Yuan, Yuan;Cheng, Yadong;Zhang, Chengsheng;Li, Yiqiang

作者机构：

关键词： Soil acidification; Biochar; Hydrochar; Soil remediation; Bacterial community

期刊名称：CHEMOSPHERE （ 影响因子：8.943； 五年影响因子：8.52 ）

ISSN： 0045-6535

年卷期： 2022 年 298 卷

页码：

收录情况： SCI

摘要： Soil acidification has become a major environmental and economic concern worldwide. Char materials (e.g biochar, hydrochar) have attracted considerable attention as soil amendments to restore degraded soil. However, the comparative study of biochar and hydrochar on plant growth in acidified soil is limited. In this study, a microcosmic experiment was used to compare the effect of biochar and hydrochar from cow manure (CBC, CHC) and reed straw (RBC, RHC) on the growth of lettuce in the acidified soil. CBC and RHC significantly increased and decreased the biomass of lettuce by 18.7% and 32.5% in the acidified soil, respectively. The increase of the lettuce growth by CBC primarily attributed to the enhancement of soil properties (SOM and pH) and soil nutrient content (Olsen-P, K, Ca, Mg, Zn, Fe and Mn). Moreover, CBC enhanced the microbial activity and complexity and increased the abundance of beneficial genera like Gemmatimonas, Ramlibacter and Haliangium, which improved soil health and might indirectly benefited the lettuce growth. Our findings highlighted the priority of char materials feedstock and preparation technology for remediating the acidified soil.

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