Rice straw and Chinese milk vetch significantly inhibited the Cu absorption of rice root whereas enhanced the migration of Cu from root to stem and leaves, and from stem and leaves to grains to some extent.

• 稻草和紫云英显著地抑制了水稻根对铜的吸收，但在一定程度上促进了根铜向茎叶及茎叶铜向谷粒迁移。