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Soil governance

For soils that are lightly polluted by heavy metals, the use of chemical amendments can turn heavy metals into insoluble substances and reduce their absorption by plants.
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For soils that are lightly polluted by heavy metals, the use of chemical amendments can turn heavy metals into insoluble substances and reduce their absorption by plants. Applying lime to acidic soil can increase the pH of the soil and cause cadmium, zinc, copper, mercury, etc. to form hydroxide precipitates, thereby reducing their concentration in the soil and reducing the harm to plants. For soils that have accumulated too much nitrate nitrogen and have flowed into the groundwater body, one is to greatly reduce the amount of nitrogen fertilizer, and the other is to use chemical inhibitors such as urease inhibitor and nitrification inhibitor to control the large amount of nitrate and nitrite accumulation.

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