Effect of cadmium and arsenic contamination on element content and effectiveness in rhizosphere soils of different forages

To explore the effects of Cd and As composite contaminated soils on element contents effectiveness in rhizosphere different forages, root morphology, soil elements their availability 21 forages were studied analyzed. The results showed: cultivars showed significant differences morphological characteristics. Root length is an index morphology that has highest correlation with other availability. And between each was higher than content. Among them, Fe significantly correlated characteristics ( P <0.05). varied greatly among cultivars. six elements, difference toxic metal largest, while Al largest. According to analysis cultivar, interaction under As. Toxic metals affected other, there a very positive content Fe, Mn had