土壤重金属铅污染条件下作物生态吸收效应研究

Crop Eco-absorption Effects under the Condition of Soil Heavy Metal Pollution

众所周知,农田灌溉是污水处理回用的主要目标,研究污水灌溉带来的土壤重金属污染以及土壤重金属污染条件下,种植作物对重金属的吸收效应问题显得尤为重要。本文通过试验,研究了污水灌溉重金属(Pb)污染条件下,玉米种植对铅吸收的效应问题,其中包括不同生育期玉米根、茎、叶含铅量的分布,成熟期玉米主要部位对铅的吸收作用,成熟期玉米籽实对铅的吸收,玉米对土壤中铅吸收的分异特性,以及土壤中铅的迁移分析等。研究成果对于合理开发利用污灌水资源,减轻土壤污染,改善土壤生态环境都具有一定的参考价值。

It is well known that the main reusing purpose of wastewater treatment is for irrigation. Therefore, it is very important to study the influence of heavy metal pollution and crop ecobsorption effects on heavy metal under the condition of soil heavy metal pollution. Through an experiment, the crop（corn） eco-absorption effects on heavy metal（pb. ）under the condition of soil heavy metal pollution is studied, which includes pb. content distribution in corn roots, stems, leaf, as well as soil pb. transformation analysis, etc. it is true that the present findings should play an important role in the reasonable utilization of wastewater resources, alleviate soil pollution, improve soil eco-environment.