Application of sinosenecio in repairing of heavy metal cadmium polluted soil
A technology for repairing soil and heavy metals, applied in the field of Compositae, can solve the problems of insufficient plant species resources, etc., and achieve the effect of fast natural reproduction, strong operability, and vigorous vitality
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Embodiment 1
[0025] Example 1 Mine soil remediation test
[0026] The test site is the Baofeng Copper Mine in Yingjing County, western Sichuan. The specific method is: directly sow the puer root collected from the mining area on the soil with cadmium content of 12.74~32.43 mg kg -1 Let it grow naturally on the tailings slag soil. After 75 days, the stubble (12-20cm) was left to harvest the above-ground parts of the plants, and 5 plant samples were randomly selected to measure the cadmium content of 24.83-47.32mg kg -1 .
Embodiment 2
[0027] Example 2 Pot stress test
[0028] The test site is located in the teaching and research farm of Sichuan Agricultural University.
[0029] Using the method of potting to simulate heavy metal pollution in soil, the plant Puergen ( Sinosenecio oldhamianus ) seedlings were transplanted into potting soil polluted with gradient concentrations of heavy metal cadmium. The experiment started on April 20th. The transplanted Puergens were seedlings collected from the Baofeng mining area in Yingjing County, Sichuan Province after sowing seeds. There were 3 plants in each pot and repeated 3 times. The soil weight of each pot was 6 kg, and 0.36 g of pure nitrogen and phosphorus (P 2 o 5 ) 0.28g, Potassium (K 2 O) 0.32 g. A total of 5 treatments were set up in the experiment, namely CK (without adding Cd) and 4 experiments with different dosage concentrations, and the dosage concentration was 5 mg kg -1 (T1), 30 mg kg -1 (T2), 60 mg kg -1 (T3) and 90 mg kg -1 (T4), the ad...
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