[1]李明辉,张笑蓉,杜国强,等.安徽石台仙寓地区土壤硒地球化学特征及生物效应[J].华东地质,2023,44(02):186-196.[doi:10.16788/j.hddz.32-1865/P.2023.02.007]
　LI Minghui,ZHANG Xiaorong,DU Guoqiang,et al.Geochemical characteristics and biological effect of soil selenium in the Xianyu area, Shitai County of Anhui Province[J].East China Geology,2023,44(02):186-196.[doi:10.16788/j.hddz.32-1865/P.2023.02.007]
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安徽石台仙寓地区土壤硒地球化学特征及生物效应()
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《华东地质》[ISSN:2096-1871/CN:32-1865/P]

卷:
44
期数:
2023年02期
页码:
186-196
栏目:
土壤资源专题
出版日期:
2023-06-17

文章信息/Info

Title:
Geochemical characteristics and biological effect of soil selenium in the Xianyu area, Shitai County of Anhui Province
作者:
李明辉;  张笑蓉;  杜国强;  陶春军;  吴正
安徽省地质调查院(安徽省地质科学研究所), 安徽 合肥 230001
Author(s):
LI Minghui;  ZHANG Xiaorong;  DU Guoqiang;  TAO Chunjun;  WU Zheng
Geological Survey of Anhui Province(Anhui Institute of Geological Sciences), Hefei 230001, Anhui, China
关键词:
硒; 地球化学特征; 生物效应; 仙寓地区; 安徽石台
Keywords:
selenium; geochemical characteristics; biological effect; Xianyu area; Shitai County of Anhui Province
分类号:
P595X142
DOI:
10.16788/j.hddz.32-1865/P.2023.02.007
摘要:
为探讨安徽石台仙寓地区土壤-作物系统中硒的富集及迁移特征,在该区系统采集了岩石、土壤、灌溉水、农作物及根系土样品,研究土壤硒的地球化学特征、赋存状态、主要影响因素及生物有效性等。结果显示:研究区表层土壤硒含量为0.27~15.79 mg/kg,平均值为0.87 mg/kg,显著高于安徽省土壤背景值;土壤硒含量与有机质呈显著正相关,但与pH值无相关性;不同基岩地层的硒含量差异显著,其中蓝田组、荷塘组及皮园村组碳质页岩是该区土壤硒的主要物质来源;土壤硒形态主要为腐殖酸结合态、强有机结合态和残渣态,生物可直接利用形态的硒约占3％。研究区稻谷、茶叶对硒的平均富集系数分别为0.21和0.08,采集的水稻样品全部达到富硒标准,具有良好的富硒产业开发优势。
Abstract:
In order to understand the enrichment and migration behavior of selenium in the soil-crop system in the Xianyu area, Shitai County, Anhui Province, we systematically collected samples of rocks, soils (including root soils), irrigation water and crops to study selenium in terms of its geochemical features, occurrence status, main influencing factors and bioavailability. The results showed that the content of selenium in the topsoil of the study area ranged from 0.27 mg/kg to 15.79 mg/kg (0.87 mg/kg in average), and was evidently higher than the soil background value of Anhui Province. The content of selenium was positively correlated with organic matter, but unrelated to pH value of the soil. Various bedrock strata exhibit obviously different selenium content, which mainly sourced from carbonaceous shales of the Lantian Formation, Hetang Formation and Piyuancun Formation in the study area. Selenium is substantially humic acid-bound, strongly organically-bound and in its residual form in soil, of which only about 3％ can be directly used by organisms. The average enrichment coefficient of selenium in paddy and tea of the study area is 0.21 and 0.08, respectively. All the paddy samples reached the selenium-rich standard, which implies that the local paddy has advantages in the development of selenium-rich products.

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备注/Memo

备注/Memo:
收稿日期:2022-4-26;改回日期:2022-9-1。
基金项目:安徽省自然资源科技项目"安徽省高镉富硒土壤资源开发利用研究(编号:2020-K-7)"、安徽省重点研究与开发计划项目"池州市天然富硒土壤开发利用关键技术研究与示范(编号:202004a06020048)"项目资助。
作者简介:李明辉,1987年生,男,高级工程师,硕士,主要从事农业地质和生态地球化学调查评价工作。Email:lmh050121@163.com。
通讯作者:张笑蓉,1989年生,女,工程师,硕士,主要从事生态地球化学调查评价工作。Email:303769045@qq.com。
更新日期/Last Update: 1900-01-01