安徽农业科学2024，Vol.52Issue(22)：60-65,6.DOI:10.3969/j.issn.0517-6611.2024.22.011
基于富硒土壤的重金属污染风险及低累积水稻筛选
Risk Research of Heavy Metal Pollution Based on Selenium Rich Soil and Screening Low Heavy Metal Accumulation Rice
摘要
Abstract
A heavy metal pollution risk investigation was conducted in the selenium-rich soil of Guigang,Guangxi.Three season field experi-ments were conducted to screen rice varieties with high accumulation of selenium and low accumulation of heavy metals,providing basic data and technical support for the development of selenium-rich soil resources and the safe production of selenium-rich agricultural products.The re-sults showed that:Se content in the surface soil of the experimental area reached the selenium-rich standard,and Cd content exceeded the risk screening value,with an exceeding rate of 55.00%;Cd in the surface soil mainly existed in the form of ion exchange,with strong activity and high ecological risk;Se content in the brown rice produced in the experimental area reached the selenium-rich rice standard,Cd content excee-ded the standard limit value,with an exceeding rate of 85.00%,and the inorganic arsenic content also exceeded the limit value,with an excee-ding rate of 50%;three seasons of screening rice varieties could produce selenium-rich rice when planted in the experimental area.For early rice,two varieties,Shenyou 9516 and Wanxiang 696,were selenium-rich and low cadmium varieties;for late rice,Yexiangyou 2 and Yexiangy-ouyousi were the superion selenium-rich and low cadmium varieties;Shenyou 9516 had the potential for selenium-rich,low cadmium,and low arsenic synchronously;Cd content in brown rice,which was screened for selenium-rich and low accumulation in the experimental area,still excee-ded the limit value.Other remediation measures need to be taken to ensure the safe production of selenium-rich soil in the experimental area.关键词
富硒/土壤/重金属/低累积水稻/风险Key words
Selenium-rich/Soil/Heavy metal/Low accumulation rice/Risk分类
农业科技引用本文复制引用
何平,李媛媛,冯先翠,焦洪鹏,江海燕..基于富硒土壤的重金属污染风险及低累积水稻筛选[J].安徽农业科学,2024,52(22):60-65,6.基金项目
广西重点研发计划生态环保项目(桂科AB19245050). （桂科AB19245050）
