摘要
利用盆栽试验,研究外源Cd进入土壤后的生物可利用含量及风险程度。结果表明：① CaCl2提取剂对辣椒土壤中Cd具有一定的提取能力,其提取率达11%以上;污染土壤的提取量（0.197-2.137 mg/kg）和提取率（32%-44%）明显高于对照土壤,对辣椒的供给能力相对较高。②辣椒不同生育期土壤中Cd污染风险程度评定的结果为：T0中度风险,T1、T2、T3和T4均为高度风险。整体来说,污染土壤中Cd的可利用性生态风险偏高。
The ecological risk and bioavailability of Cd in yellow soil was studied by pot experiment with different Cd concentrations. The results showed that 0.01 mol/L CaCl2 was suitable for extracting Cd in yellow soil of pepper. Percentages of extracting Cd was more than 11%. Moreover, the extracting Cd contents （0.197 - 2.137 mg/kg ）and rates （ 32% - 44% ） were obviously higher in polluted soils than controlled soil. The bioavailability risks of Cd were To - medium risk, T1, T2, T3 and T4- high risk.
出处
《辣椒杂志》
2015年第4期21-24,37,共5页
Journal of China Capsicum
基金
贵州省农业攻关项目[黔科合NY(2015)3018-2号]
贵州省农科院研究生科研创新基金项目[黔农科合(创新基金)2012017]
关键词
黄壤
CD
风险评估编码
可利用性
yellow soil
Cd
risk assessment code （ RAC ）
bioavailability
