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水基钻屑用作基质对植物生长和重金属富集特征的影响
高昊辰,刘广明,陈金林,张 春,张凤华,黄真真,王秀萍,王相平
1.南京林业大学南方现代林业协同创新中心;2.中国科学院南京土壤研究所;3.重庆市涪陵页岩气环保研发与技术服务中心;4.石河子大学;5.河北省农林科学院滨海农业研究所
摘要:
通过将水基钻屑与土壤和(或)腐熟污泥以一定比例混合形成基质,在进行定量淋洗脱盐的基础上,研究了金叶女贞与狗牙根在该种基质上的生长状况与重金属富集特征。结果表明:经过淋洗,配比基质盐分、养分等主要理化指标满足植物生长需求,重金属含量符合CJT340—2016《绿化种植土壤》标准,满足绿化植物生长所需的环境质量要求。金叶女贞与狗牙根生物量的积累在配比基质中存在显著差异,其中在水基钻屑与土壤质量配比为10∶1与10∶2的基质中生物量最高。对于重金属的富集,金叶女贞与狗牙根在不同配比基质中存在一定差异,二者对镉、铅、铜存在富集作用。可见,水基钻屑合理配比后可作为基质用作绿化种植。
关键词:  水基钻屑  基质  重金属富集
DOI:10.13758/j.cnki.tr.2020.05.024
分类号:S15; X74
基金项目:江苏省水利科技项目(2017011)、江苏省重点研发计划项目(BE2018759)、江苏高校优势学科建设工程项目和重庆市科委–社会事业与民生保障科技创新专项重点研发项目(cstc2017shms-zdyfx0033)资助。
Growth and Heavy Metal Accumulation Characteristics of Plants in Matrixes of Water-Based Drilling Cuttings
GAO Haochen1, LIU Guangming2, CHEN Jinlin1, ZHANG Chun3, ZHANG Fenghua4, HANG Zhenzhen1, WANG Xiupin5, WANG Xiangping6
1.Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University;2.Institute of Soil Science,Chinese Academy of Sciences;3.Chongqing Environmental Protection Center for Shale Gas Technology & Development;4.Shihezi University;5.Institute of Coast Agriculture, Hebei Academy of Agriculture and Forestry Sciences;6.Institute of Soil Science, Chinese Academy of Sciences
Abstract:
In this study, the water-based drilling cuttings were mixed with soil and/or decomposed sludge with various proportions to form matrixes, and then the growth status and heavy metal enrichment characteristics of Ligustrum vicaryi and bermuda grass in the matrixes were studied based on the quantitative elution of salt. The results showed that the main physiochemical indicators such as the contents of salt and nutrients of matrixes after being leached were satisfied the growth requirements of plants, and heavy metal contents were in line with the standard of green planting soil CJT340—2016, which met the environmental quality requirements for greening plants. There was a significant difference in biomass accumulation between Ligustrum vicaryi and bermuda grass in matrixes with different proportions of water based driling cuttings and soil and/or decomposed sludge, the biomass were highest in matrixes with water-based drilling cuttings and soil at 10∶1 and 10∶2. There was a certain difference in heavy metal accumulation between Ligustrum vicaryi and bermuda grass in different matrixes,Ligustrum vicaryi and Bermuda grass have enrichment effects on Cd, Pb and Cu. Reasonable proportion of water-based drilling cuttings can be used as matrix for greening planting.
Key words:  Water-base drilling cuttings  Matrix  Heavy metal enrichment

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