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当前位置: 首页 > 文章 > 氮肥形态对水稻吸收Pb、Cd的影响及其风险评价 福建农业学报 2018 (10) 1084-1089
Position: Home > Articles > Effect of Nitrogen Fertilizers on Pb and Cd Uptake of Rice Plants and Associated Food Safety Lssues Fujian Journal of Agricultural Sciences 2018 (10) 1084-1089

氮肥形态对水稻吸收Pb、Cd的影响及其风险评价

作  者：
刘兰英;黄薇;陈丽华;吕新;涂杰峰;上官亮;谢亚兴
单  位：
福建省农业科学院农业质量标准与检测技术研究所
关键词：
氮肥形态;重金属;吸收能力;风险评价;水稻
摘  要：
为揭示不同氮肥形态对水稻吸收Pb和Cd能力的影响,通过盆栽试验,比较不同氮肥形态(酰胺态氮肥、铵态氮肥和硝态氮肥)对土壤理化性质、重金属活性及水稻对其吸收的影响,采用污染指数法和风险评价模型对不同氮肥处理下水稻重金属的污染程度及对居民健康带来的风险进行评价。结果表明:相对于酰胺态氮肥,施用铵态氮肥可使土壤pH值下降,施用硝态氮肥可使土壤pH值上升,铵态氮肥处理的土壤中Pb、Cd含量较硝态氮肥处理低;相对于酰胺态氮肥和硝态氮肥,铵态氮肥能够降低水稻植株各部位的Pb、Cd含量;风险评价结果表明,施用铵态氮肥可在一定程度上降低镉对居民健康带来的风险,实际生产中通过施用铵态氮肥可有效减少水稻对重金属的吸收。
译  名：
Effect of Nitrogen Fertilizers on Pb and Cd Uptake of Rice Plants and Associated Food Safety Lssues
作  者：
LIU Lan-ying;HUANG Wei;CHEN Li-hua;L Xin;TU Jie-feng;SHANGGUAN Liang;XIE Ya-xing;Institute for Agricultural Standards and Testing Technology,Fujian Academy of Agricultural Sciences;Textile Inspection Company Limited of Fujian Province;
单  位：
LIU Lan-ying%HUANG Wei%CHEN Li-hua%L Xin%TU Jie-feng%SHANGGUAN Liang%XIE Ya-xing%Institute for Agricultural Standards and Testing Technology,Fujian Academy of Agricultural Sciences%Textile Inspection Company Limited of Fujian Province
关键词：
nitrogen fertilizers;;heavy metal;;uptake capacity;;risk assessment;;rice
摘  要：
Effect of nitrogen fertilizers on the uptakes of Pb and Cd by rice plants was studied.A pot experiment was conducted using amide,ammonium or nitrate nitrogen fertilizer to determine the responding soil properties,heavy metals bioavailability in rhizosphere soils,and metal uptakes by the plants.The heavy metal contaminations in different parts of a rice plant were evaluated by the pollution indices,and the food safety risk by an assessment model.The results showed that the pH in soil was lowered by the application of ammonium fertilizer,while raised by that of nitrate,as compared to amide.Among the three different nitrogen fertilizers,ammonium introduced significantly less Pb and Cd in the soil,as well as in the rice plants.The risk assessment on the rice did not raise a concern on Pb with ammonium but suggested its use to minimize Cd contamination.

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