镍污染稻田低积累水稻品种筛选及健康风险评价  

Screening and Health Risk Assessment of Low Accumulation Rice Varieties in Nickel Polluted Paddy Fields

作　　者：张秀锦 张容慧 蔡景行 王国坤 柴冠群 黄承玲 范成五[5] ZHANG Xiujin;ZHANG Ronghui;CAI Jinghang;WANG Guokun;CHAI Guanqun;HUANG Chengling;FAN Chengwu(College of Ecological and Environmental Engineering,Guizhou Minzu University,Guiyang 550025,China;Agricultural College,Guizhou University,Guiyang 550025,China;Guiyang Rural Revitalization Service Center,Guiyang 550081,China;Qingzhen Planting Service Center,Qingzhen 551400,China;Soil and Fertilizer Institute,Guizhou Academy of Agricultural Sciences,Guiyang 550006,China)

机构地区：[1]贵州民族大学生态环境工程学院,贵州贵阳550025 [2]贵州大学农学院,贵州贵阳550025 [3]贵阳市乡村振兴服务中心,贵州贵阳550081 [4]清镇市种植业服务中心,贵州清镇551400 [5]贵州省农业科学院土壤肥料研究所,贵州贵阳550006

出　　处：《河南农业科学》2023年第6期61-69,共9页Journal of Henan Agricultural Sciences

基　　金：国家重点研发计划项目(2018YFD0800602);贵州省科研机构服务企业行动计划项目(黔科合服企([2015]4001))。

摘　　要：为筛选出适用于黔中地区稻田安全生产的镍(Ni)低积累水稻品种,采用田间试验法,以黔中地区主栽的10个水稻品种为研究对象,测定不同部位Ni含量,研究Ni在稻米中的累积和转运特征,并对10个水稻品种进行聚类分析及健康风险评价。结果表明,10个水稻品种中宜香优800稻米Ni含量最低,为0.372 mg/kg;乐优891稻米Ni含量最高,为2.136 mg/kg。宜香优800稻米对Ni的富集能力及Ni由稻壳向稻米转运的能力均低于其他9个水稻品种。基于稻米Ni含量对水稻品种聚类的结果表明,宜香优800为低值类(第Ⅰ类)品种。健康风险评价显示,10个水稻品种对不同人群的THQ(目标危害系数)值均小于1,无健康风险。宜香优800的THQ值最低,结合稻米Ni含量,推荐其作为黔中地区Ni低积累水稻品种。In order to screen rice varieties with low nickel(Ni)accumulation suitable for safe production in rice fields in the central Guizhou,field experiments were conducted to determine the Ni content in different parts of ten main rice varieties grown in the central Guizhou region.The accumulation and transport characteristics of Ni in brown rice were studied,and cluster analysis and health risk assessment were conducted.The results showed that the brown rice of Yixiangyou 800 had the lowest Ni content of 0.372 mg/kg,while Leyou 891 had the highest Ni content of 2.136 mg/kg among the ten rice varieties.Yixiangyou 800 had lower Ni bioconcentration and translocation abilities from rice husks to brown rice than the other nine rice varieties.Based on the clustering analysis of brown rice Ni content in different rice varieties,Yixiangyou 800 was classified as the low-value class(classⅠ)variety.The THQ(target hazard quotient)values of the ten rice varieties for different population groups were all less than 1,indicating no health risk.Health risk assessment showed that Yixiangyou 800 had the lowest THQ value,and combined with the Ni content in brown rice,it was recommended as a rice variety with low Ni accumulation for the central Guizhou.

关 键 词：水稻 品种筛选 镍 富集 转运 聚类分析 目标危害系数 

分 类 号：S511[农业科学—作物学] X53[环境科学与工程—环境工程]