Fulvic acid-containing large-medium-trace element water-soluble fertilizer and preparation method thereof
A technology of trace elements and fulvic acid, which is applied in ammonium nitrate fertilizer, ammonium orthophosphate fertilizer, alkaline orthophosphate fertilizer, etc., can solve the problems that the reaction is difficult to continue, reduce production efficiency, affect the use of chemical fertilizers, etc., and achieve faster The effect of rotting, increasing profits, and enhancing competitiveness
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[0034] A method for preparing a large, medium and trace element water-soluble fertilizer containing fulvic acid, comprising the following steps:
[0035] 1) Take one-year straw, after segmenting, cutting, screening, and removing impurities, add calcium oxide and potassium hydroxide solution to soak for 4 days;
[0036] 2) Add water, soybean meal, and rapeseed cake for ingredients, then add Bacillus subtilis, stir thoroughly, enter the fermentation tank for 4 days of fermentation and decomposing treatment, fully stir again and ferment and decompose for 4 days, wherein the fermentation temperature is maintained at 65 degrees ;
[0037] 3) Take the fermented liquid that has been fermented for 8 days and carry out solid-liquid separation and impurity removal to obtain the primary fermented liquid. After the primary fermented liquid is left to stand and settle, the supernatant is extracted and put into a centrifuge for centrifugation and impurity removal twice, and then left to sta...
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