Abstract
In order to investigate the effects of lead-zinc resistant microbial consortium on growth of Ricinus communis L., fungus L14 and the bacteria X8 from the soil in the lead-zinc mining area were collected as the microbial consortium of heavy metal-tolerant plant growth-promoting. The effect of compound functional flora on the growth of Ricinus communist L. seedlings was investigated. As the concentration of lead and zinc increased, the growth indicators of castor plant seedlings all reduced sharply. It can be seen that the higher the concentration of lead and zinc was, the greater the toxic effect on castor, and the more inhibited root growth. In inoculate group, the root length and stem height increased by 2cm and 2-3cm on average compared with the non-inoculated group.
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