Heavy metal pollution des sevious harm to plant growth and development,crop yields and qualities,and does sevious harm to human and environment by the bio-megascopic effect of biochains.

• 重金属污染严重影响植物的生长发育,影响作物的产量和品质,并通过生物链放大作用进一步对人类和环境造成严重危害,因此重金属污染已成为世界性的重大环境问题。