农业环境科学学报2012，Vol.31Issue(6)：1082-1088,7.
适于轻度Cd、As污染土壤种植的水稻品种筛选
Screening of Suitable Rice Cultivars for the Adaptation to Lightly Contaminated Soil with Cd and As
摘要
Abstract
Pot experiments were earned out to study the effects of spiked As and Cd pollution on the biomass and accumulation of heavy metals by 9 rice cultivars( Oryza saliva L) in two different types of paddy soils. The results indicated that the rice biomass significantly reduced in both soils when spiked with As. The reduction of biomass for 9 cultivars ranged from 29.4% to 54.3% in red paddy soil and from 29.5% to 53.3% in yellow paddy soil. There was a significant difference in the tolerance among 9 rice cultivars( P<0.05). The reduction of biomass for Wanjing9707 (japonica) was the least, which indicated that it was the highest tolerant to As, while the reduction of hiomass for Zhe 1500( in-dica) was the largest, which showed that it was the least tolerant to As. For Cd pollution treatment, there were no significant differences in the tolerance to Cd among 9 cultivars in two types of soils. Different rice cultivars showed a significant difference in accumulation capacity for Cd and As(P<0.05). Denong 2000(hybrid rice) and Zhe 1500(indica) were the most sensitive rice cultivar to As and Cd pollution, respectively, which had the highest bioaccumulation coefficientf BCF). The cultivar Nangeng32(japonica) had a lower BCF for Cd and As and was more tolerant to As pollution. Among 9 rice cultivars, Nangeng32 was suitable for planting in the paddy soils with light contamination of Cd and As.关键词
水稻品种/As/Cd/富集系数/红泥田/黄泥田Key words
rice cultivar, arsenic/ cadmium/ bioaccumulation coefficient/ red paddy soil/ yellow paddy soil分类
资源环境引用本文复制引用
叶新新,周艳丽,孙波..适于轻度Cd、As污染土壤种植的水稻品种筛选[J].农业环境科学学报,2012,31(6):1082-1088,7.基金项目
农业部公益性行业科研专项(200903015) （200903015）
质检公益性行业科研专项(200910201) （200910201）
