Abstract:In an effort to reduce Cd and Pb concentration in leafy vegetables grown in suburban soils, three rounds of pot experiments were conducted to study the effect of Astragalus sinicus L. on the growth, Cd and Pb concentration in leafy vegetables, and available heavy metals in the soil (e.g. Cd and Pb in soil solution, DTPA extractable metals). The results showed that compared with the control, A. sinicus significantly increased the aboveground biomass of Lactuca sativa and Amaranthus cruetus but there was no significant effect on Cd and Pb concentration in DTPA extractable fraction, in soil solution or in the vegetables. Therefore, A. sinicus can be applied to increase the biomass of leafy vegetables in the test soil without increasing the risk of food chain contamination.
唐明灯, 艾绍英, 李盟军, 杨少海, 罗英健, 姚建武. 紫云英对污染土壤上叶菜生长及其镉和铅含量的影响[J]. 中国环境科学, 2011, 31(3): 461-465.
TANG Ming-Deng, AI Shao-Ying, LI Meng-Jun, YANG Shao-Hai, LUO Ying-Jian, YAO Jian-Wu. Effect of Astragalus sinicus on the growth, Cd and Pb concentration of leafy vegetables. CHINA ENVIRONMENTAL SCIENCECE, 2011, 31(3): 461-465.