A fertilizer for reducing soil acidity and its preparation method and application

Abstract

The present invention belongs to the field of soil pollution control, and relates to a fertilizer for reducing soil acidity, and its preparation method and application. It includes the following raw materials: humic acid compound fertilizer masterbatch: urea, diammonium phosphate, potassium sulfate, ammonium bicarbonate and mineral-source activated humic acid; acidic soil conditioner: activated carbon powder, sepiolite powder, potassium sulfate, magnesium sulfate heptahydrate, biochemical fulvic acid, biochemical potassium fulvic acid, slaked lime, chelated trace elements, anionic polyacrylamide, hydroxy calcium phosphate, trehalose and chitosan oligosaccharide; based on the total weight of the fertilizer for reducing soil acidity, the content of the humic acid compound fertilizer masterbatch is 40-90wt%, and the content of the acidic soil conditioner is 10-60wt%. The fertilizer for reducing soil acidity of the present invention can improve the soil acidification problem quickly, gently, long-term and stably, and can be mixed with slow-release fertilizers to achieve the synchronization of fertilizer nutrient release and crop nutrient demand, thereby increasing crop yields.

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