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This selection of common landscape being bamboo species Philippine white bamboo flooring bamboo, yellow stripe diamond bamboo as the experimental material, in June 2006 to October, with different concentrations of mercury and certain concentration of silicon and lanthanum treatment, through the relevant physiological the determination of different bamboo species of mercury stress resistance and silicon and rare earth on physiological responses under Hg Stress Moderating Effect of bamboo for bamboo plants resistance to heavy metal and silicon and physiological regulation mechanism of rare earth to provide a theoretical basis, but of bamboo plants in heavy metal contaminated environmental applications reference. The results showed that: low concentrations of mercury stress three bamboo species membrane permeability, MDA content, net photosynthetic rate, SOD activity, POD activity and proline content, yellow stripe diamond bamboo soluble protein content did not change significantly, only CAT activity , root activity showed different degrees of inhibition, suggesting that three bamboo species of mercury have a strong stress resistance; high concentrations of mercury stress, pre-treatment, three bamboo species increased polyamine content, POD activity was increased , no significant changes in other indicators: treatment late three bamboo species net photosynthetic rate, CAT activity was significantly decreased, free proline content increased, the Philippine white bamboo, bamboo flooring soluble protein content decreased, increased membrane permeability, MDA content increased, Philippine white bamboo, yellow stripe diamond bamboo soluble sugar content decreased, Philippine white bamboo chlorophyll content dropped substantially, flooring bamboo decreased to some extent, the Philippine white bamboo SOD activity decreased, yellow stripe diamond bamboo soluble proteins, membrane permeability no significant change; processing ends When the appearance of white bamboo Philippines most obvious morphological changes, bamboo flooring, followed by yellow striped diamond bamboo no significant change; Philippine white bamboo flooring bamboo root vigor decline than yellow stripe diamond bamboo. Comparisons of the three bamboo species with high concentrations of mercury stress resistance are: yellow striped diamond bamboo) flooring bamboo) Philippine white bamboo. Silicon on low concentrations of mercury stress indicators had no significant effect, high concentrations of mercury stress silicon processing, pre-tested bamboo species polyamine content in general higher than the corresponding mercury processing, POD activity was relatively stable; late can significantly improve the three for try bamboo net photosynthetic rate and CAT activity, inhibition of Philippine white bamboo, bamboo flooring increased membrane permeability, MDA, proline content increased and soluble sugar, soluble protein, chlorophyll content decreased SOD activity increased white bamboo Philippines ; silicon can significantly alleviate the damage of mercury stress on root and improve root vigor bamboo species tested. Show, 300mg/kg of silicon on three bamboo species under Hg Stress Injury and Physiological effects with varying degrees of ease, of which the Philippines white bamboo mitigation works best. 50mg / L of Rare Earth on the indicators under Hg Stress affects overall similarity with silicon on bamboo flooring, bamboo yellow stripe Diamond has some physical damage mitigation effects, but slightly inferior to mitigate the effect of silicon.
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