point采用水培试验方法,用不同浓度的铅和铬复合溶液处理凤仙花种子,研究铅和铬对凤仙花种子的发芽率、幼根、幼芽和根系活力的影响。结果表明,一定浓度范围的铅和铬溶液有利于凤仙花种子萌发,而高浓度的铅和铬溶液抑制凤仙花的生长发芽,且这种抑制作用随着浓度的增加逐渐增强;低浓度铅和铬溶液 point Hydroponic test was used to study the effects of lead and chromium on the germination rate, young root, shoots and root vigor of Impatiens balsamina seeds treated with different concentrations of lead and chromium complex solution. The results showed that Pb and Cr solutions in a certain range of concentration were beneficial to the seed germination of Impatiens, while the high concentration Pb and Cr solutions inhibited the growth and germination of Impatiens balsamina, and the inhibition increased gradually with the increase of concentration. Lead and chromium solutions