Method for plant restoration of heavy-metal-contaminated soil
A technology for contaminated soil and phytoremediation, applied in the field of soil remediation, can solve the problems of unqualified, complex technology, secondary pollution and other problems of heavy metal cadmium-contaminated soil remediation, and achieve the effects of low cultivation cost, rapid growth, and resource saving.
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Embodiment 1
[0030] This embodiment provides a method for phytoremediation of heavy metal cadmium-contaminated soil, comprising the steps of:
[0031] 1) Seedling cultivation of Moss inunica
[0032] Cuncao moss was planted in early April, the amount of seed per mu was 0.5kg, the soil was disinfected and sterilized with 50% carbendazim 800 times solution before sowing, 30 kg of calcium magnesium phosphorus base fertilizer was applied per mu, and the soil surface was covered with 1cm thick soil after sowing , control soil moisture, promote seed germination, and wait until the moss grows to 5cm before transplanting to the heavy metal CdCl 2 on polluted soil.
[0033] 2) Preparation of cadmium-contaminated soil:
[0034] The basic soil was taken from Suihua City, Heilongjiang Province, soil without heavy metal cadmium pollution, dried the soil at 105°C for 8 hours, took 10kg and put it into a square plastic cultivation pot with a size of 40cm*40cm, and then sprayed CdCl 2 Solution, 50mg / kg...
Embodiment 2~3
[0037] The steps in Examples 2 and 3 are the same as in Example 1, except that the concentration of cadmium-contaminated soil in Step 2 is 100 mg / kg and 200 mg / kg respectively.
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