Heavy metal contents in top soils in agricultural soils of Zhejiang province and their differential characteristics and effecting factors were studied in the presented paper through field soil investigation.Averages of total Cd

Cr

Pb

Zn

Cu and Ni

except As and Hg

in the 904 selected soil samples were higher than the contents in top soils based on the second general survey of soil of Zhejiang province.The result showed that most of the heavy metal contents were enhanced excessively contrasted with the background values of Hangjiahu plain

Zhejiang province

China and the whole world.It was found that heavy metal contents exceed the threshold levels according to the second grade of standards for soil environmental quality of China(GB15618-1995)

the index of exceed the provided standard of Cd

Ni

Hg

Pb

Cu

Cr

As and Zn were 10.72%

9.70%

6.80%

5.35%

3.43%

3.03%

1.80%and 1.04%

respectively.Moreover

land use

parent material and soil type were analyzed by the variance analysis to study the influence to heavy metal concentrations in agricultural soils by these effective factors.