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本课题组近10年来致力于土壤-植物体系中硒迁移转化及其生物有效性的研究。对陕西紫阳硒中毒区、青海平安富硒地区和泾惠灌区缺硒地区环境中硒及有效性进行了调研,系统研究了外源硒在土壤中环境过程及其影响硒有效性的因素;建立了形态和价态相结合的土壤硒测定方法,针对性地提出了评价硒有效性的指标,这些研究为硒有效性评价及缺硒地区硒的
Our research group has been devoted to the research on selenium migration and transformation and its bioavailability in soil-plant system in recent 10 years. The selenium and its effectiveness in selenium poisoned area of Ziyang in Shaanxi Province, selenium-enriched area in Ping’an, Qinghai Province, and Jing-Hui irrigated area were investigated. The environmental factors of selenium in soil and its influencing factors on selenium availability were systematically studied. The method of determining soil selenium with combination of form and valence was put forward, and some indexes to evaluate the selenium efficiency were put forward. These researches are selenium validity evaluation and selenium