Abstract: A field experiment was conducted to study the cadmium (Cd) accumulatio n and its relationship with sulfur content in the leaves and stems of Helianthus annuus, Zea mays, and Glycine max at the soil Cd concentration of 2 and 5 mg·kg-1. The results showed that from seedling stage to mature stage, there was a significant positive correlation between Cd accumulation and sulfur content in H. annuus and Z. mays stems but no correlation in their leave s, indicating that sulfur played an important role in plant Cd translocation. Th e seed Cd content was in the order of H. annuus>G. max>Z. ma ys when the soil Cd concentration was 2 mg·kg-1, and G. max>H. annuus>Z. mays when the soil Cd concentration was 5 mg·kg-1. Maize seed had the least Cd content, being 001 and 003 mg·kg-1 at soi l Cd concentration of 2 and 5 mg·kg-1, respectively, smaller than the lim ited value of national food standard of China.

Key words: Pseudomonas fluorescens, Allelopathy, Cultivated solution, Dilution, Crops