灌溉排水学报2018，Vol.37Issue(6)：16-23,8.DOI:10.13522/j.cnki.ggps.2017.0430
再生水和养殖废水灌溉下生物质炭和果胶对土壤盐碱化的影响
Effects of Irrigating Biochar- and Pectin-amended Soil with Treated Municipal Wastewater and Swine Wastewater on Soil Salinity and Sodicity
摘要
Abstract
[Objective]Reusing treated municipal wastewater and livestock-farm wastewater for irrigation can ameliorate the increased water scarcity and curtail their discharge to surface and subsurface watercourse, but inappropriate managements could result in soil salinization and sodification. The purpose of this paper is to experimentally investigate the impact of irrigating biochar- and pectin-amended soils with the aforementioned brackish water on soil qualities.[Method]The experiments were conducted in rhizoboxes and the control was without soil amendment. During the experiment, we measured soil pH, electricity conductivity (EC), concentration of typical ions and other indicators, from which the sodium adsorption ratio (SAR) and the exchange sodium percentage (ESP) were calculated.[Result]Compared with using swine wastewater, irrigation using treated municipal wastewater increased soil pH, EC, salt content, SAR and ESP, thereby risking secondary salinization and sodification; biochar and pectin addition did not have noticeable impact on soil pH. Compared to the control, biochar amendment did not alter the EC and salt content when irrigated with distilled water or treated domestic water, but led to an increase in EC and salt content by 34.9％ and 40.4％, respectively, when irrigated with swine wastewater. Pectin addition did not result in a noticeable change in EC and salt content, but increased the SAR and ESP compared to the control[Conclusion]Amending soil with biochar risked secondary soil salinization when irrigating with swine wastewater, while irrigating pectin-amended soil with treated municipal water or swine wastewater risked soil solidification. Irrigation with the above brackish water to soils amended by biochar or pectin should therefore be used with care.关键词
生物质炭/果胶/再生水/养殖废水/土壤盐碱化Key words
biochar/pectin/reclaimed water/swine wastewater/soil salinization分类
资源环境引用本文复制引用
刘源,崔二苹,李中阳,杜臻杰,高峰,樊向阳..再生水和养殖废水灌溉下生物质炭和果胶对土壤盐碱化的影响[J].灌溉排水学报,2018,37(6):16-23,8.基金项目
国家自然科学基金项目(41701265) （41701265）
河南省科技攻关计划项目(172102110121) （172102110121）
中央级科研院所基本科研业务费专项(FIRI2016-13,FIRI2017-14) （FIRI2016-13,FIRI2017-14）
中国农业科学院科技创新工程 （）
国家自然科学基金项目(51479201) （51479201）
"十三五"国家重点研发计划项目(2017YFC0403503) （2017YFC0403503）
