农业环境科学学报2013，Vol.32Issue(7)：1302-1308,7.DOI:10.11654/jaes.2013.07.003
改良-农艺综合措施对水稻吸收积累镉的影响
Impacts of Optimized Agronomic Regulation Management on Cadmium Absorption and Accumulation by Late Rice
摘要
Abstract
An in situ field experiment was conducted in a Cd contaminated paddy soil to reveal the effects of optimized agricultural management strategy on Cd absorption and accumulation by rice,in the smelting area of Hunan Province.Taking hybrid rice(named Zhong you 978) as an sample in this experiment,lime application at end of booting stage combined with following continuous water-logging was selected as optimized agricultural management,simultaneously traditional agricultural management as a control.To evaluate effects of optimized agronomic management on Cd uptake by rice,the concentrations of Cd in different rice tissues at five key growth stage were examined.Results showed that,rice yield increased by 33.24％ in optimized agronomic management of lime application and subsequent continuous water-logging treatment compared to control treatment,Cd concentration of brown rice decreased by 39.32％ compared to control treatment.So,lime application at end of booting stage combined with following continuous water-logging was an effective measure to reduce rice Cd concentration standard exceeding risk and showed favorable practicality because of its easy operability,and also can provide scientific support and basis for food safety production and supervision.关键词
镉/土壤/水稻/石灰/淹水调控/冶炼区Key words
cadmium/ soil/ rice/ lime/ water-logging control/ smelting area分类
资源环境引用本文复制引用
陈喆,铁柏清,刘孝利,雷鸣,袁啸,大岛卓,叶长城..改良-农艺综合措施对水稻吸收积累镉的影响[J].农业环境科学学报,2013,32(7):1302-1308,7.基金项目
国家科技重大水专项"水体污染控制与治理"子课题"湘江流域重金属面源污染控制技术"(2009ZX07212-01-05) （2009ZX07212-01-05）
湖南省农业厅"镉污染稻田水稻吸收积累镉规律"(20172) （20172）
湖南省教育厅"重金属复合污染土壤综合修复技术研究与示范"项目(10A049) （10A049）
