Identification, Chelated Strengthening And Application Of Cb Hyperaccumulating Flowers

Phytoremediation is a plant or the patience and the accumulation of excess based on the theory of certain pollutants, the use of plant and microbial system coexistence of pollutant removal of an environmental pollution control technologies. The flowering plants used in remediation of contaminated soils should be said that the research is just emerging but has enormous potential for repair. Our situation is very serious Cd pollution, a large number of cadmium contaminated soil to repair. Cadmium in the soil is very low content of bioavailable, it is necessary to intensify the use of certain means (such as the application of chelating agents) to improve the repair efficiency of the plant.Watch this thesis as the main subject of flower plants, outdoor potted plant through the screening test, 8 of which plants to cadmium tolerance and accumulation characteristics, attempting to filter from the flowers of plants with cadmium accumulation characteristics of certain plants, and with claws Co-induction technology, strengthen the repair effect of flowering plants, while minimizing potential environmental risks and health hazards.According hyperaccumulator should have the basic characteristics of the 8 tested for pot flower plants initial screening analysis. The results show that Cd pollution tolerance of 3 strong flower species, Mirabilis, maidenhair, marigold. At different Cd concentrations, which compared with the control 3 species of flowers, the above-ground biomass (dry weight) and control were no significant differences between (p> 0.05), showed strong patience. Especially in the shoot dry weight Mirabilis has not only declined, but a slight increase compared with the control, shoot dry weight increased slightly.In addition, the accumulation of Cd pollution tolerance but a strong 3 weak flower species, including geranium, impatiens, purple clover. Stability of these plants in the plant there may be some value in rehabilitation. Snapdragon, carnation flowers 2 Cd pollution tolerance for the accumulation of weak and weak, is a non-Cd hyperaccumulators.Cadmium accumulation in the three kinds of ability of the flowers, mature plants, imposing twice before harvest enhanced mixed chelating capacity of cadmium absorption by plants.