Biochar Input to Saline-Alkali Farmland Can Improve Soil Health and Crop Yield: A Meta-Analysis
文献类型： 外文期刊
作者： Zhang, Liqiang 1 ; Bate, Baoyin 1 ; Cui, Jinhu 1 ; Feng, Yudi 1 ; Yu, Jianning 1 ; Cui, Zhengguo 2 ; Wang, Hongyu 1 ; Li, Qiuzhu 1 ;
作者机构： 1.Jilin Univ, Coll Plant Sci, Changchun 130012, Peoples R China
2.Jilin Acad Agr Sci, Soybean Res Inst, Changchun 130033, Peoples R China
关键词： biochar; saline-alkali soil; soil pH; soil salinity; soil remediation
期刊名称：AGRICULTURE-BASEL （ 影响因子：3.6； 五年影响因子：3.8 ）
ISSN：
年卷期： 2025 年 15 卷 5 期
页码：
收录情况： SCI
摘要：
Soil salinization in farmland is a critical factor limiting global soil health, food security, and ecosystem productivity. Biochar has recently shown great application potential in agricultural fields in many domains, such as soil structure improvement, carbon sequestration, and reductions in greenhouse gas emissions. Here, a meta-analysis of 113 published papers was carried out to quantify the effects of biochar on the remediation of saline-alkali soil and crop yield in terms of climatic conditions and agricultural management, with the aim of determining the optimal agricultural management strategy for biochar application to saline-alkali soils. The results show that adding biochar to saline-alkali farmland increases the TOC in soil (44.0%) and water utilization efficiency (8.7%), and decreases soil salinity (-9.6%), certain salt ion contents in particular (Na+, 12.5%; Cl-, 23.4%; HCO3-, -17.7%), along with soil pH (-2.2%), resulting in a 20.8% higher crop yield. Applying shell biochar at a rate of 10-20 t
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