The effects of Hg 2+ concentration on the germination number of new growth Egeria najas had no distinct rule, and Hg 2+ concentration above 1.00 mg/L would hurt the propagation of new growth Egeria najas.

• 不同浓度Hg2+对细叶蜈蚣草侧枝发芽个数的影响没有明显的规律；Hg2+浓度>1.；00mg/L处理已对细叶蜈蚣草侧枝生殖产生毒害作用。