Effects of Grape Seedlings Intercropping with Hyperaccumulators on Soil Enzyme Activity under Cadmium Stress

Abstract

The effects of intercropping with four hyperaccululator plants Galinsoga parviflora, Sigesbeckia orientalis, Solanum nigrum and Crassocephalum crepidioide on soil enzyme activity and soil organic matter of grape seedlings under cadmium (Cd) stress were studied by a pot experiment. The results showed that intercropping with C. crepidioide and the monoculture had no significant differences in soil organic matter, but other treatments were higher than the monoculture. Compared to the monoculture, urease and catalase activities were increased by intercropping with C. crepidioide, but the activities of invertase and phosphatase were decreased. The other intercropping treatments on soil enzyme activity were higher than the monoculture, and intercropping with S. orientalis was the best.