常用肥料对作物重金属积累的影响及其机理研究进展

被引:16
作者
张蕾
李洋
张阳
机构
[1] 沈阳师范大学生命科学学院
关键词
土壤污染; 重金属积累; 新型肥料; 生化机理;
D O I
10.13304/j.nykjdb.2018.0793
中图分类号
X53 [土壤污染及其防治];
学科分类号
083001 [环境科学];
摘要
我国肥料用量和种类均日益增多,其重金属含量及对作物重金属积累影响复杂,亟待全面开展肥料重金属安全性评价工作。从常见肥料重金属含量、肥料对作物积累重金属的影响及影响机理三方面阐述了肥料重金属安全性评价的研究进展。有机肥和固废堆肥重金属污染问题严重,无机化肥和其他新型肥料中重金属污染问题也不容忽视。肥料一方面可以作为重金属污染源对土壤和作物造成重金属污染,另一方面也可能通过改变土壤中重金属的赋存形态、影响作物根对重金属的吸收和根向地上部分的转运等生化机理而影响作物中重金属含量。在比较了常见肥料中重金属污染特征、生物积累行为及机理基础上,对肥料重金属安全性评价的研究前景进行了展望。
引用
收藏
页码:123 / 131
页数:9
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