农业环境科学学报2017，Vol.36Issue(10)：1938-1945,8.DOI:10.11654/jaes.2017-0462
镉砷复合污染条件下镉低吸收水稻品种对镉和砷的吸收和累积特征
Cd and As absorption and transport characteristics of rice in a paddy field co-contaminated by Cd and As
摘要
Abstract
To explore safe methods to produce rice grown in paddy soil contaminated by Cd and As,this study selected six varieties of rice (four with low Cd absorption and two local varieties),and carried out field experiments in paddy soil contaminated by Cd and As in the red soil region of Shaoguan,Guangdong Province.The growth trends and characteristics of Cd and As absorption and transfer in low-absorption varieties and local varieties were evaluated.The results showed significant differences of yield among the different kinds of rice;the yields of the local varieties were significantly higher than those of the low-absorption varieties.Cd content in the low-absorption varieties was significantly lower than in the local varieties,and As content of all the varieties was higher than the national standard (0.2 mg· kg-1).Cd and As content(0.05 mg· kg-1 and 0.31 mg· kg-1 respectively) were lowest in variety Jinyou268.Correlation analysis showed that the transport ability from shell to grain for low-absorption varieties was lower than that for the local varieties.Therefore,to reduce Cd and As content in rice which is growing in Cd-and As-contaminated paddy soil,it is important to select rice varieties with low Cd as well as low As absorption capacities.关键词
水稻/品种/镉/砷/复合污染Key words
rice/varieties/cadmium/arsenic/co-contamination分类
农业科技引用本文复制引用
单天宇,刘秋辛,阎秀兰,邵金秋,廖晓勇..镉砷复合污染条件下镉低吸收水稻品种对镉和砷的吸收和累积特征[J].农业环境科学学报,2017,36(10):1938-1945,8.基金项目
国家自然科学基金项目(41571309) （41571309）
国家高技术研究发展计划(863)项目(2013AA06A206) （863）
中国公益性行业(农业)科研专项(201403015)National Natural Science Foundation of China(41571309) （农业）
National High-tech R&D Program(863 Program) (2013AA06A206) （863 Program）
China's Public Welfare Industry Special(Agriculture) Research(201403015) （Agriculture）
