Method for removing input cadmium in air and irrigation water in paddy fields
A technology for irrigating water and paddy fields, which is applied in the field of removing cadmium from the atmosphere and irrigation water input in paddy fields by using bio-crust biomes in paddy fields, which can solve the problems that cadmium cannot be removed in time, and achieve the effect of easy promotion, obvious effect, and strong nitrogen fixation ability
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[0034] Example 1 Artificial inoculation and cultivation of biological crust and its function of enriching cadmium
[0035] This embodiment was carried out in four different areas in Hunan Province, namely Zhaoling Village (ZL) of Zhuzhou County, Huanggu Village (HG) of Liling City, Daxing Village (DX) of Chaling County and Xinma Village (XM) of Zhuzhou City. Firstly, the provenance of biological crusts was collected in the above four different regions. In this embodiment, 20 sample points under different planting systems (rice-rice rotation, tobacco-rice rotation) and soil conditions were selected, and the biocrust layer about 1-2 cm thick on the surface was scooped out, and the collected provenance was brought back. Dry indoors in the shade, remove dead leaves and other sundries, and use an ordinary pulverizer (diameter of 1.2mm sieve) to pulverize them, stir well and put them in a cool place for later use.
[0036]Then, select 20cm of local paddy field surface plowing soil ...
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