| abstract |
The invention relates to a clay mineral-based trace element regulator used for treating rice field cadmium pollution. The clay mineral-based trace element regulator comprises the following raw materials: 8-16 weight parts of EDTA.Na2Mn, 0.5-3 weight parts of silicon dioxide, 24-32 weight parts of zinc sulfate, 1-5 weight parts of magnesium sulfate, 0.4-1.2 weight parts of ferrous sulfate, 0.6-1.4 weight parts of calcium oxide, and 80-160 weight parts of clay mineral. The rice field cadmium pollution treatment technology is based on environmental geochemistry and an antagonism principle, on one hand, by increasing the pH value of the soil and changing the soil cadmium occurrence mode, bio-availability of the soil cadmium is reduced, on the other hand, by reducing the rice cadmium absorption through element antagonism, so that the remediation effect and efficiency are ensured. |