| The contents of soil heavy metals of apple orchards were monitored and analyzed on 47 soil sam-
ples in apple orchards of 16 counties of Shaanxi. The result of test showed that the detection rates of Cd，Cr,
Cu, Pb，Hq and As were 100%，but the amounts were all below the permitted level of no-harmful apple pro
ducing environmental standard; according to the permitted level of green apple producing env ironmental stan
dard, the values of the single item pollution index of the soil heavy metals w ere all smaller than 1 except one soil sample As，whose index was 1.03. For 47 soil samples, the values of comprehensive index w ere all smaller than 0.56, belonging to clean grade. As is the focal point to be monitored and controlled from now on. |