Effects of Carambola (Averrhoa carambola) plantation on heavy metal content in soil and heavy metal accumulation in fruits.

Abstract

The soil heavy metal element absorption and enrichment of Carambola(Averrhoa carambola) were analied through the heavy metal elements content such as Cd,Pb,Cu,Hg,As,Cr of different types,different soil samples and different age trees of carambola in lianjiang green food base were investigated. The results showed that ① the soil pH≤5.50 which is acid soils and the heavy metal content of carambola orchard soil and fresh fruits were in conformity with the quality requirements of the production of green food;② Heavy metal absorption carambola in the soil were different with the the different heavy metal element and different kinds;③ The enrichment of Cd was the most than other elements of heavy metals and the concentration coefficient was 0.947. According to the sequence as enrichment coefficients,the order was Cd(0.947) Hg(0.098) Cu(0.023) Pb(0.003) As(0.001) = Cr(0.001) .