FIELD: agriculture.
SUBSTANCE: method for producing sulphur-containing fertilizer is characterized by the fact that it involves mixing waste from the production of calcium polysulphide in the form of a suspension, which is a mixture containing water-soluble calcium polysulphide and insoluble calcium sulphite, unreacted elemental sulphur and calcium carbonate, calcium hydroxide, after separating calcium polysulphide in the form aqueous solution, while calcium sulphate hemihydrate and kaolin are added to the suspension with pH = 10-12. The fertilizer contains sulphur and calcium.
EFFECT: inventions make it possible to obtain a product effective on acidic soils.
5 cl, 3 dwg
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