Remediation method for cadmium-nitrate combined pollution of facility agriculture soil
A remediation method and composite pollution technology, which is applied in the field of polluted soil environmental governance, can solve the problems of less remediation methods, and achieve the effects of small engineering volume, improved biodiversity, and simple technical management
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[0037] Example 1
[0038] 1. Test site: a vegetable planting base in Hangzhou.
[0039] The plastic greenhouses that have been planted continuously for 8 years have a cadmium content of 1.10 mg / kg and a nitrate content of 235.2 mg / kg, which exceed the limit for farmland in the soil environmental quality standard (GB15618-2008).
[0040] The super-accumulative plant Sedum southeast is screened and provided by this group from the existing plants. The stems of Sedum southeast are cut into a matrix with a vermiculite:perlite ratio of 3:1, and the plant height is 5-6cm or approximately Transplanted to soil contaminated by cadmium and nitrate at 1 month.
[0041] The regular pakchoi is Qibao greens, and the regular water spinach is Thai willow green water spinach.
[0042] The varieties of water spinach and pakchoi with low accumulation of cadmium and nitrate were selected from the existing vegetable varieties of this research group. The standard is: under field growth conditions, the accumu...
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