Bañuelos G S
Water Management Research Laboratory, USDA-ARS, 2021 S. Peach, Fresno, CA 93727, USA.
Biofactors. 2001;14(1-4):255-60. doi: 10.1002/biof.5520140131.
Selenium toxicity is encountered in arid and semi-arid regions of the world with alkaline, seleniferous soils derived from marine sediments. Once present in soils and waters at high concentrations, Se is very complicated and highly expensive to remove with conventional physical and chemical techniques. Phytoremediation is a plant-based technology that is being considered for managing Se in central California soils. The technology involves the use of plants in conjunction with microbial activity associated with the plants to extract, accumulate, and volatilize Se. Once absorbed by plant roots, Se is translocated to the shoot where it may be harvested and removed from the site. Therefore, plant species used for phytoremediation of Se-laden soils may by plant uptake and volatilization minimize the Se load eventually entering agricultural effluent and the harvested crop can be carefully blended with animal forage and fed to animals in Se-deficient areas.
在世界上干旱和半干旱地区，土壤呈碱性且源自海洋沉积物、富含硒，会出现硒中毒现象。一旦硒在土壤和水中高浓度存在，用传统物理和化学技术去除它非常复杂且成本高昂。植物修复是一种基于植物的技术，目前正被考虑用于处理加利福尼亚中部土壤中的硒。该技术涉及利用植物以及与植物相关的微生物活动来提取、积累和挥发硒。一旦被植物根系吸收，硒就会转移到地上部分，在那里可以收获并从该地点移除。因此，用于对富含硒土壤进行植物修复的植物物种可以通过植物吸收和挥发，将最终进入农业废水的硒负荷降至最低，并且收获的作物可以小心地与动物饲料混合，喂给缺硒地区的动物。
