期刊论文

中文

土壤

0253-9829

2022

54

2

396-405

10.13758/j.cnki.tr.2022.02.025

国家自然科学基金青年项目（41601215）； 国家自然科学基金面上项目（41771261）； 华中师范大学中央高校基本科研业务费项目（CCNU20QN030）资助；

本校为第一机构

为探究生物质炭添加对农田土壤水力性质的影响，以我国10个地区农田耕层土壤为供试土样，通过室内模拟试验，研究4种生物质炭添加比例下（C0、C5、C10和C15，生物质炭体积占比分别为0%、5%、10% 和15%）土壤饱和导水率（Ks）、水分特征曲线及van Genuchten模型拟合参数和水分常数的变化特征。结果表明：生物质炭添加对土壤渗透性能的影响与土壤质地密切相关；添加生物质炭后，砂粒含量较高的风砂土和黄绵土的Ks显著降低，C15的降幅分别为89.2% 和85.0%；而黏粒含量较高土壤的Ks普遍升高，C15处理下赤红壤的增幅高达158.9%。生物质炭添加改变了土壤的持水能力，且变幅随着生物质炭添加量的增加而...

A laboratory simulation experiment was conducted to investigate the influence of biochar application on hydraulic properties of arable topsoils from ten regions in China.Biochar was incorporated into the soils at the volume rate of 0%(C0),5%(C5),10%(C10)and 15%(C15),respectively.The results indicated that the effect of biochar on soil permeability were determined by soil texture,the saturated hydraulic conductivity declined in aeolian sandy soil and yellow loamy soil with high sand content due to the application of biochar,which were decreased ...