REGULATION OF IRRIGATION WATER QUALITY CAN FURTHER IMMOBILIZE CD IN CONTAMINATED SOILS

文献类型： 外文期刊

第一作者： Li, P.

作者： Li, P.;Li, K. Y.;Qi, X. B.;Zhao, Z. J.;Zhang, Y.;Liu, D.;Guo, W.;Qi, X. B.;Zhan, Z. L.

作者机构：

关键词： cadmium; irrigation schedule; micro-polluted surface water; groundwater; bio-concentration factor; bio-accumulation factor

期刊名称：APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH （ 影响因子：0.712； 五年影响因子：0.758 ）

ISSN： 1589-1623

年卷期： 2021 年 19 卷 1 期

页码：

收录情况： SCI

摘要： Combined use of surface water and groundwater is a common practice in agricultural activities, but how the immobilize cadmium and its decrease in grains induced with irrigation micro-polluted surface water and groundwater is still poorly understood. This paper presents field experimental results in attempts to reveal the effect of irrigation water quality on cadmium migration and accumulation in winter wheat/summer maize rotation systems in Huabei plain while the cadmium content in 0-10 cm topsoil is 3.8 times, permissible value for agricultural land in China. The results showed there was no obviously influence on cadmium accumulation in grains irrigated with micro-polluted surface water during emergence and seeding stage, but there was significantly increased Cd content and a higher bioaccumulation factor in grains with micro-polluted surface water irrigation during jointing and booting stage. It was found a significantly inhibition for grain weight and uniformity with groundwater irrigation during jointing and booting stage, and winter wheat yield was significantly decreased with micro-polluted surface water irrigation during jointing and booting stage. It could be concluded irrigation water type can further immobilize Cd in mild and moderate contaminated soils, thus micro-polluted surface water can be adopted in seeding stage, and groundwater irrigated in jointing and booting stage at heavy metal pollution arable farmland to minimize the risk of biological chain pollution and food safety.

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