您好，欢迎访问重庆市农业科学院 机构知识库！

Mercury in some chemical fertilizers and the effect of calcium superphosphate on mercury uptake by corn seedlings (Zea mays L.)

文献类型： 外文期刊

作者： Zhao, Xiulan 1 ; Wang, Dingyong 1 ;

作者机构： 1.Southwest Univ, Chongqing Key Lab Agr Resources & Environm, Coll Resources & Environm, Chongqing 400716, Peoples R China

2.Minist Educ, Key Lab Ecoenvironm Gorges Reservoir Reg 3, Chongqing 400715, Peoples R China

关键词： Hg uptake;Chemical fertilizer;Transfer coefficient;Calcium superphosphate

期刊名称：JOURNAL OF ENVIRONMENTAL SCIENCES （ 影响因子：5.9； 五年影响因子：5.6 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： Mercury (Hg) contents in ten chemical fertilizers were determined, and the effect of calcium superphosphate (CSP) on the uptake and translocation of Hg in corn seedlings was investigated by pot experiments. CSP was applied at the levels of 0, 66.7, and 133.4 mg P_2O_5/kg to Hg-treated (2 mg/kg) and untreated soils. CSP had the highest Hg content (5.1 mg/kg), followed by the NPK compound fertilizer 15-5-5 (15% N, 5% P_2O_5, 5% K_2O) (1.2 mg/kg), then by nitrogen fertilizers (except for ammonia sulfate) and potassium fertilizers. Application of CSP did not obviously influence the biomass of corn roots, but it significantly increased the biomass of corn shoots in Hg-treated soil. Application of CSP at the levels of 66.7 and 133.4 mg P_2O_5/kg did not obviously influence the uptake of Hg by corn seedlings on soils without Hg treatment, but it decreased the Hg uptake of corn seedlings significantly on Hg-treated soils. The transfer coefficient of Hg in corn seedlings improved slightly on soils without Hg treatment, but decreased slightly on Hg-treated soils with the application of CSP. These results implied that CSP could ameliorate Hg toxicity to corn seedlings by inhibiting the uptake and the translocation of Hg in plants on Hg-polluted soils.

  • 相关文献

[1]Mercury in rice (Oryza sativa L.) and rice-paddy soils under long-term fertilizer and organic amendment. Tang, Zhenya,Fan, Fangling,Wang, Xinyue,Shi, Xiaojun,Wang, Dingyong,Wang, Dingyong,Shi, Xiaojun,Tang, Zhenya,Fan, Fangling,Deng, Shiping. 2018

作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：重庆市农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台