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Ecological study on vegetation reconstruction at tailings siteⅠ.Effect of lead -zinc tailings on seed germination

Zhang Zhiquan and Lan Chongyu (Zhongshan University,Guangzhou 510275 ) .  
Under laboratory condition,the seeds of trees,crops and grasses can all germinate in lead--zinc tailings.Their germination rates are similar with those in non-polluted soil,but many of them are lower than control.No dead seedlings are found within 30 days.In comparison with control,the plant height is decreased by 28.4%, compound leaf number by 34.1%,and'the biomass by 52.6%.
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