Remediation method of heavy metal contaminated soil
A remediation method and a technology of polluted soil, which is applied in the field of remediation of contaminated soil, can solve the problems of unsatisfactory remediation effect in the research stage, and achieve the effects of favorable growth, good remediation effect, and improvement of porosity and nutritional status
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Embodiment 1
[0044] This embodiment adopts a kind of repairing method of heavy metal contaminated soil, and this repairing method comprises the following steps:
[0045] (1) Add soil improver to heavy metal contaminated soil, mix well, keep 10d; the addition of said soil improver is 13g / m 2 .
[0046] (2) Add microbial inoculum to the soil of step (1), mix evenly, keep 3d; The addition of described microbial inoculum is 4g / m 2 .
[0047] (3) Plant ghost needle grass in the soil of step (2), plant the seedlings of ghost needle grass in the soil, the row spacing of planting is 34cm, the plant spacing is 26cm; the planting time is March, with 1 year as a planting cycle , after one year of growth, remove the aboveground part;
[0048] Wherein, the microbial agent includes: Trichoderma harzianum and Bacillus subtilis, the mass ratio of Trichoderma harzianum and Bacillus subtilis is 1:0.5;
[0049] In parts by mass, the soil conditioner includes: 20 parts of rice husk powder, 5 parts of calc...
Embodiment 2
[0051] This embodiment adopts a kind of repairing method of heavy metal contaminated soil, and this repairing method comprises the following steps:
[0052] (1) Add soil improver to heavy metal contaminated soil, mix well, keep 13d; the addition of said soil improver is 15g / m 2 .
[0053] (2) Add microbial inoculum to the soil of step (1), mix uniformly, keep 4d; The addition of described microbial inoculum is 5g / m 2 .
[0054] (3) Plant ghost needle grass in the soil of step (2), plant the seedlings of ghost needle grass in the soil, the row spacing of planting is 33cm, the plant spacing is 24cm; the planting time is March, with 1 year as a planting cycle , after one year of growth, remove the aboveground part;
[0055]Wherein, the microbial agent includes: Trichoderma harzianum and Bacillus subtilis, the mass ratio of Trichoderma harzianum and Bacillus subtilis is 1:0.8;
[0056] In parts by mass, the soil improver includes: 25 parts of rice husk powder, 8 parts of sodiu...
Embodiment 3
[0058] This embodiment adopts a kind of repairing method of heavy metal contaminated soil, and this repairing method comprises the following steps:
[0059] (1) Add soil improver to heavy metal contaminated soil, mix well, keep 15d; the addition of said soil improver is 18g / m 2 .
[0060] (2) Add microbial inoculum to the soil of step (1), mix uniformly, keep 5d; The addition of described microbial inoculum is 6g / m 2 .
[0061] (3) Plant ghost needle grass in the soil of step (2), plant the seedlings of ghost needle grass in the soil, the row spacing of planting is 31cm, the plant spacing is 22cm; the planting time is March, with 1 year as a planting cycle , after one year of growth, remove the aboveground part;
[0062] Wherein, the microbial agent includes: Trichoderma harzianum and Bacillus subtilis, the mass ratio of Trichoderma harzianum and Bacillus subtilis is 1:1;
[0063] In parts by mass, the soil conditioner includes: 30 parts of rice husk powder, 10 parts of so...
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Abstract
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