Ferrous sulfate plays an important role in restoring soil vitality. Ferrous sulfate is especially suitable for alkaline soils, compacted soils, salt-damaged soils, soils polluted by heavy metals and pesticides. The advantages of ferrous sulfate in soil restoration are mainly manifested in:
1. Ferrous sulfate can adjust soil pH value,
2. Ferrous sulfate can adsorb and settle heavy metals and reduce the toxicity of heavy metal elements to plants;
3. Ferrous sulfate can effectively improve soil compaction and prevent soil-borne plant diseases from attacking;
4. Ferrous sulfate improves the soil structure and increases the iron element in the soil, improves the utilization rate of soil nutrients, enhances the soil's ability to retain moisture and fertilizer, maintain the effectiveness for a long time, increase crop yields, and have significant application effects.
5. Ferrous sulfate is used as a reducing agent. After being injected into the soil, it can convert pollutants in the soil or groundwater into non-toxic or relatively less toxic substances through oxidation or reduction.
Ferrous sulfate soil remediation method:
Contaminated soil and ferrous sulfate must be fully mixed in order to exert its maximum effect. The amount of ferrous sulfate required for soils of different pollution levels is also different. Before a large amount of mixing, a small soil test must be carried out to determine the amount of ferrous sulfate added. Firstly, the soil should be trimmed, and then the ferrous sulfate agent should be spread according to the results of the small test, and then the ferrous sulfate and the soil should be stirred and mixed, and the mixing time should be as long as possible to ensure the uniformity of the ferrous sulfate agent and the soil. , So that the ferrous sulfate agent and the contaminated soil are in full contact, so that the ferrous sulfate can play the best role.