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 depending on the plant parts.The distribution of the heavy metals in the wheat plant is that in root in stalk in seed.The sewage in Xinxiang city could be used as agricultural irrigation water.However,it is very important to track and determine frequently for preventing pollution to soil and crop.