不同水源灌溉冬小麦盆栽试验

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.

Study on Pot Cultured Winter Wheat Irrigated by Different Source

Pot experiment on winter wheat irrigated by city sewage,recycled or underground water was studied for reference of irrigating with sewage.The results show that heavy metal is accumulated in root and stalk of the winter wheat,and a little chromium is found inside of seeds.Contents of all the other heavy metals excepting mercury are lower than the national standard,which suggests no heavy metals pollution.After irrigating with the sewage,the residue of lead,chromium and nickel in the wheat is variance dependi...