How is magnesium sulfate used in agriculture? Before cultivating the land, use 10-15 kg of magnesium Magnesium Sulphate producer sulfate mixed with decomposed farm manure or organic fertilizer per mu of land, mix well and spread. Topdressing: Use 10-13 kg of magnesium sulfate per acre of land to flush into the crop field with water, if it is a fruit tree, apply 250-500 g of magnesium...
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