FIELD: chemistry.
SUBSTANCE: method of producing compound fertiliser includes neutralising a mixture containing P2O5 and CaSO4, granulating and drying the end product, wherein the ratio of P2O5 and CaSO4 with respect to CaO is equal to 1:(0.25-0.65), respectively; the mixture is fed for neutralisation in an amount which provides sulphur content in the end product of 3-8%; neutralisation is carried out with calcium carbonate to pH 2.8-3.1, and nitrogen- and potassium-containing components are added during the process.
EFFECT: invention widens the range of fertilisers which contain not only nitrogen, phosphorus and potassium, but also vital elements such as sulphur and calcium, and enables to use the fertiliser on any soil and for various types of crops.
6 cl, 6 ex
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