不同材料复合添加对土壤铬形态的影响
Effect of Composite Addition of Different Materials on Chromium Morphology in Soil
游玉华 1金冬冬 2陆晓辉 1王济1
作者信息
- 1. 贵州师范大学地理与环境科学学院,贵州 贵阳 550025;贵州省喀斯特山地生态环境国家重点实验室培育基地,贵州 贵阳 550001
- 2. 贵州师范大学地理与环境科学学院,贵州 贵阳 550025
- 折叠
摘要
以铬污染黄壤为研究对象,选择有机材料(泥炭)、pH值调节剂(沸石)、生物炭(鸡粪)3种不同种类的土壤重金属污染改良剂,采用正交试验L9(34)设计和室内盆栽试验,考察不同复合材料组对土壤中重金属铬形态、pH值、有机质含量的影响.结果表明:沸石的添加提高了土壤pH值、有机质含量,增加了土壤可还原态、可氧化态铬含量;鸡粪的添加通过提高土壤pH值从而增加土壤可还原态铬的含量;泥炭的添加提高了土壤有机质含量、土壤可氧化态铬含量,降低了土壤可交换态铬含量.
Abstract
Taking chromium polluted yellow soil as the research object,three soil amendments for control-ling heavy metal pollution,including organic material(peat),pH regulator(zeolite)and biochar(chicken ma-nure),were selected and their effects on chromium morphology,pH value and the content of organic matter in soil were investigate by orthogonal test L9(34)and indoor pot experiments.The results showed that the addition of zeolite increased pH value,the content of organic matter,reducible chromium and oxidiza-ble chromium in soil.The addition of chicken manure increased pH value and thus increased the content of re-ducible chromium in soil.The addition of peat increased the content of organic matter and oxidizable chromium,but decreased the content of exchangeable chromium in soil.
关键词
铬形态/泥炭/沸石/鸡粪生物炭/土壤改良/黄壤Key words
Chromium morphology/Peat/Zeolite/Chicken manure biochar/Soil amelioration/Yellow earth引用本文复制引用
基金项目
贵州省科技计划基金资助项目(黔科合支撑[2017]2580号)
出版年
2024
NETL
NSTL
维普
万方数据