Ammonium sulphate are acidic fertilizers. It can increase the acidity of the soil, Therefore should pay attention to use in acidic
soils with alkaline fertilizer, such as plant ash, phosphate rock powder or calcium magnesium phosphate and so on. Use in neutral
and alkaline soil in order to prevent calcium ion combined with sulfate ion to insoluble calcium sulfate (gypsum), caused by soil
hardened, and should apply with organic fertilizer.
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