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为利用污水灌溉冬小麦提供参考依据,利用新乡市生活污水、再生水及地下水3种不同水源进行了盆栽灌溉冬小麦试验。结果表明:重金属在根、茎叶中均有累积,籽粒中仅含有少量的铬;除汞以外,其他重金属均未超过国家标准,未造成重金属污染。污水灌溉后重金属铅、铬和镍在小麦植物体中的残留量因部位不同而有差异,重金属在小麦植株中的分布为根>茎叶>籽粒。可以采用新乡市污水作为农业灌溉用水,但要经常跟踪测定,预防土壤和农作物被污染。
In order to provide a reference for utilizing sewage to irrigate winter wheat, the experiment of potted irrigated winter wheat was conducted using three different sources of domestic sewage, reclaimed water and groundwater in Xinxiang City. The results showed that heavy metals accumulated in roots, stems and leaves, and the grains contained only a small amount of chromium. Except for mercury, all the other heavy metals did not exceed the national standards and did not cause heavy metal pollution. The residues of heavy metals Pb, Cr and Ni in wheat plants after sewage irrigation were different due to different parts. The distribution of heavy metals in wheat plants was root> stem and leaf> grains. Xinxiang City sewage can be used as agricultural irrigation water, but should always track the determination to prevent soil and crop contamination.