Application of trichoderma reesei and sedum plumbizincicola in remediation of cadmium-polluted farmland soil
A technology of Trichoderma reesei and sedum with ore is applied in the field of remediation of cadmium-contaminated farmland soil, which can solve the problems of crop yield and quality decline, unreasonable agricultural management measures, affecting plant growth, etc. Ecological effect, the effect of increasing biomass
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Embodiment 1
[0020] Embodiment 1: Trichoderma fermented liquid to the treatment of cadmium-contaminated soil repaired by Sedum sedum with ore
[0021] 1 Materials and methods
[0022] 1.1 Test soil
[0023] The ferrous wet leached soil (yellow brown soil) collected from Qixia Mountain in Nanjing is clean, and its basic physical and chemical properties are: pH5.38 (H 2 O), organic matter 21.3g / kg, alkaline nitrogen 162.3mg / kg, available phosphorus 11.7mg / kg, available potassium 82.2mg / kg, cation exchange capacity 16.5cmol / kg, total cadmium content 0.05mg / kg. Soil samples were passed through a 2 mm sieve after natural air drying for pot plant simulation experiments.
[0024] 1.2 Test plants
[0025] Sedum sedum seedlings are self-cultivated seedlings in the laboratory.
[0026] 1.3 Tested strains
[0027] Trichoderma reesei (Trichoderma reesei) strain FS10-C (preservation number: CGMCC No.3970), white cotton-like mycelia, green spores, producing yellow pigment.
[0028] 1.4 Medium
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Embodiment 2
[0051] Embodiment 2: the treatment of Trichoderma solid preparation to repair cadmium-contaminated soil with ore Sedum
[0052] 1 Materials and methods
[0053] 1.1 Test strains
[0054] Trichoderma reesei strain FS10-C (T. reesei FS10-C) (deposit number: CGMCC No.3970).
[0055] 1.2 Test soil
[0056] Collected from a basic farmland protection area near a typical waste electronic waste recycling site in the eastern coastal area of Zhejiang. The soil type is paddy soil, the soil-forming parent material is marine sediment, and the system classification belongs to iron-accumulated hydroponic man-made soil. Due to pickling recycling of waste metals and waste incineration and dismantling in this area, the heavy metal content in farmland soil exceeds the standard. The basic physical and chemical properties and soil heavy metal pollution are shown in Table 2.
[0057] Table 2 The main physical and chemical properties and heavy metal content of the tested soil
[0058]
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