The number of ear and ripe rate and the weight of thousand ear of rice were increased with the Cu2+ stress in a given concentration range.

• 一定浓度范围的Cu~(2+)胁迫能增加水稻的穗粒数、结实率和千粒重，低浓度的Cd~(2+)和Hg~(2+)胁迫能增加水稻的穗粒数和结实率，却明显降低水稻的千粒重。