Method for remedying cadmium-contaminated soil through turfgrass and microorganism combination
A technology for cadmium-contaminated soil and microbial remediation, applied in the field of joint remediation of cadmium-contaminated soil by turfgrass-microbes, can solve the problems of low biomass of hyperaccumulator plants, slow growth, and restrictions on large-scale application, and achieve soil environmental adaptation Strong, reduce non-point source pollution, increase the effect of surface runoff
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[0033] ① Screening of cadmium-resistant bermudagrass
[0034] Select Bermudagrass materials with strong stress tolerance, good regeneration and wide adaptability preserved in the turf germplasm resource nursery of Wuhan Botanical Garden, Chinese Academy of Sciences. After 2 months of hydroponics, when the root system and canopy are basically established and all kinds of materials grow uniformly, the gradient concentration cadmium stress treatment (CdSO 4 The treatment solution was prepared with 1 / 2 Hoagland nutrient solution), the gradient concentration started from 0.2mM, and increased by 0.1mM to 1.5mM each time, and the lawn quality was scored every week (9-point system, 6 points for acceptable lawn quality), and the crown was measured. Layer growth rate and photochemical efficiency (Fv / Fm), using the membership function method in fuzzy mathematics to evaluate the cadmium resistance of be...
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