【摘要】 在核工业体系中,常有少量放射性核素如裂变元素⁹⁰Sr、¹³⁷Cs、¹⁴⁴Ce等泄漏出来并散落在农田土壤和植被上。本文叙述了种植在被污染土壤里的春小麦中这些放射性核素的积累及其分布情况,并讨论了核素的结合状态、土壤农化性状、植物生长发育期以及施肥等诸因素对其积累的影响。最后,提出了消除被污染土壤及消除农产品污染的可能途径,包括种植合适的草本植物,施用相应的肥料,铲除彼¹³⁷Cs所污染的表层土等措施。更多还原

【Abstract】 A quantity of radionuclides, such as fission products 90Sr,137Cs and144Ce etc., generally may leak out from nuclear industry system and may be disseminated on soil and plant cover. The accumulation and distribution of the radionuclides in spring wheat planted in the contaminated soil are described. The factors as nuclide chemical forms, soil agrochemical properties, growing stages of the plant and fertilizing etc., which affect the accumulation and the distribution were discussed. Possible approaches were supposed to eliminate or clean the radionuclides from contaminated soil,which include planting adaptable herbage, applying some fertilizers and scraping regolith etc.更多还原