叶面喷施纳米氧化锌和二氧化锰对不同小麦品种镉、锌和锰吸收和转运的影响
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作者单位:

1.土壤与农业可持续发展国家重点实验室南京土壤研究所;2.江苏地质矿产设计研究院中国煤炭地质总局检测中心;3.河南科技学院资源与环境学院

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中图分类号:

X173, S512

基金项目:

徐州市重点科研开发项目(社会发展);国家重点研发计划项目


Effect of foliar spraying of zinc oxide nanoparticles and manganese dioxide on the uptake and translocation of cadmium, zinc and manganese in different wheat cultivars
Author:
Affiliation:

1.Key Laboratory of Soil Environment and Pollution Remediation,Chinese Academy of Sciences Nanjing Soil Research Institute;2.Jiangsu Geology and Mineral Resources Design and Research Institute Testing Center of General Administration of Coal Geology,China;3.School of Resources and Environment,Henan Institute of Science and Technology,Xinxiang

Fund Project:

Key Scientific Research and Development Projects of Xuzhou City (Social Development) ;National Key Research and Development Program of China

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    摘要:

    食用小麦是我国居民镉摄入的重要来源,小麦镉超标引起全社会的关切。减少小麦中的Cd积累是减少我国居民Cd暴露风险的有效实用策略之一,本研究考察了叶面喷施纳米氧化锌、纳米二氧化锰和纳米氧化锌+纳米二氧化锰3种纳米材料对6个低累积小麦品种的生长、产量、镉效果以及镉在不同小麦品种中的转移、积累规律。结果表明,6个小麦品种在产量、锌、锰含量和吸收量上存在较大差异。叶面喷施这三种纳米材料对不同小麦品种的株高均无显著影响,但提高了周麦36和江麦919小麦品种的理论亩产量,分别使西农619、周麦36、华伟305、盛麦21、江麦919和烟农919小麦籽粒镉浓度降低11-35%、10-46%、10-38%、28-40%、37-53%和15-27%;叶面喷施纳米氧化锌显著提高了西农619、周麦36、华伟305、江麦919和烟农919小麦籽粒锌含量4-20%;叶面喷施纳米二氧化锰显著提高了周麦36、华伟305、江麦919和烟农919小麦籽粒锰含量2-9%。总之,不同小麦品种有着不同的转移、积累规律,需根据品种选择不同叶面喷施材料。

    Abstract:

    Wheat consumption is an important source of human cadmium (Cd) intake. The excessive Cd in wheat has aroused the public concern. Decreasing the Cd accumulation in wheat is one of the effective and practical strategies to reduce the risk of Cd exposure of Chinese residents. This study examined the growth, yield, Cd reduction, as well as the transfer and accumulation of Cd in six wheat varieties through foliar sprayings of nano-ZnO, nano-MnO2, and their mixtures. The results indicate significant differences among the six wheat varieties in terms of yield, zinc, manganese content, and uptake. Foliar applications of these three nanomaterials had no significant impacts on the plant height across different wheat varieties. However, it significantly increased the theoretical yield per acre of Zhoumai 36 and Jiangmai 919. Moreover, Xinong 619, Zhoumai 36, Huawei 305, Shengmai 21, Jiangmai 919, and Yannong 919 reduced the Cd concentration in wheat grains by 11-35%, 10-46%, 10-38%, 28-40%, 37-53%, and 15-27%, respectively. Additionally, foliar spraying of Zn significantly increased the Zn contents in wheat grains of Xinong 619, Zhoumai 36, Huawei 305, Jiangmai 919, and Yannong 919 by 4-20%. Similarly, foliar spraying of Mn fertilizer significantly increased the Mn contents in wheat grains of Zhoumai 36, Huawei 305, Jiangmai 919, and Yannong 919 by 2-9%. Overall, different wheat varieties have different transfer and accumulation patterns, and different leaf spraying materials should be selected according to the varieties.

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  • 收稿日期:2024-02-06
  • 最后修改日期:2024-06-20
  • 录用日期:2024-07-04
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