Fertiliser additive comprising magnesium and calcium sulphate and carbonate

摘要

Chemical composition to be used as additive for fertiliser composition, comprising 35 - 60 % by weight of magnesium sulphate, 5 - 35 % by weight of calcium sulphate, 10 - 35 % by weight of a mixture containing magnesium carbonate and calcium carbonate up to 5 % by weight of water, either free or bound as crystal water, and the balance magnesium oxide.