Effects of Heavy Metals and Antibiotics on Soil and Vegetables.

The soil applied with pig manure from large-scale pig farms and the soil never treated with pig manure were investigated.Results show that the contents of copper,zinc and arsenic in the experimental soil were 11,5 and 2 times respectively as high as those in the control soil and 4,4 and 3 times as high in the vegetables(leeks,pakchoi,celery,radish) growing in the experimental soil as those in the control groups(P0.05).The contents of copper,zinc and arsenic in the experimental soil all exceeded standard by 133.98%,52.05% and 12.04%,and the content of zinc in the experimental vegetables was 117% higher than standard.Also,oxytetracycline and chlortetracycline were detected in the experimental soil and in the roots of experimental leek,but not in control group.