Medium trace element fertilizer for adjusting alkaline soil and preparation method thereof
A medium-trace element fertilizer and medium-trace element technology, which is applied in the direction of urea compound fertilizer, nitrogen fertilizer, magnesium fertilizer, etc., can solve the problem that the inclination angle of the granulation disc cannot be adjusted arbitrarily, the pH value of the soil cannot be adjusted, and the granulation requirements cannot be met, etc. problems, to achieve the effect of improving crop quality, avoiding uneven or excessive local fertilization, and enhancing fertilizer utilization efficiency
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Embodiment 1
[0046] A method for preparing medium and trace element fertilizers capable of regulating alkaline soils, comprising the following steps:
[0047] 1) Mix 2 g of citric acid, 2 g of methylene succinic acid, 5 g of maleic acid and an appropriate amount of water, heat to 50-80° C., and react for 30 min; mix 3 g of ethylene glycol, 2 g of polyethylene glycol Add to the above mixed solution, lower the temperature to 40-50°C, continue the reaction for 30 minutes, and obtain the mixed solution A;
[0048] 2) Mix 15g magnesium sulfate monohydrate, 20g sulfur powder, 5g ferrous sulfate, 2g zinc sulfate monohydrate, 2g boric acid, 2g copper sulfate pentahydrate, 2g manganese sulfate monohydrate, 2g ammonium heptamolybdate, and grind to 100 Mesh or so, to obtain the mixture B;
[0049] 3) Put the mixture B into a disc granulator or a drum granulator, keep the rotating speed, slowly and evenly add the solution A into it, and prepare granular fertilizer C with a particle size of 1.0-2.0mm;...
Embodiment 2
[0054] Compared with Example 1, the difference is that a kind of preparation method that can regulate the medium and trace element fertilizer of alkaline soil comprises the following steps:
[0055] 1) Mix 3 g of citric acid, 3 g of methylene succinic acid, 3 g of maleic acid and an appropriate amount of water, heat to 50-80° C., and react for 30 minutes; mix 2 g of ethylene glycol and 3 g of polyethylene glycol Add to the above mixed solution, lower the temperature to 40-50°C, continue the reaction for 30 minutes, and obtain the mixed solution A;
[0056] 2) Mix 17g magnesium sulfate monohydrate, 18g sulfur powder, 6g ferrous sulfate, 2g zinc sulfate monohydrate, 2g boric acid, 2g copper sulfate pentahydrate, 2g manganese sulfate monohydrate, 2g ammonium heptamolybdate, and grind to 100 Mesh or so, to obtain the mixture B;
[0057] 3) Put the mixture B into a disc granulator or a drum granulator, keep the rotating speed, slowly and evenly add the solution A into it, and prep...
Embodiment 3
[0060] Compared with Example 1, the difference is that a kind of preparation method that can regulate the medium and trace element fertilizer of alkaline soil comprises the following steps:
[0061] 1) Mix 2 g of citric acid, 2 g of methylene succinic acid, 5 g of maleic acid and an appropriate amount of water, heat to 50-80° C., and react for 30 min; mix 3 g of ethylene glycol and 3 g of polyethylene glycol Add to the above mixed solution, lower the temperature to 40-50°C, continue the reaction for 30 minutes, and obtain the mixed solution A;
[0062] 2) Mix 16g magnesium sulfate monohydrate, 18g sulfur powder, 5g ferrous sulfate, 2g zinc sulfate monohydrate, 2g boric acid, 2g copper sulfate pentahydrate, 2g manganese sulfate monohydrate, 2g ammonium heptamolybdate, and grind to 100 Mesh or so, to obtain the mixture B;
[0063] 3) Put the mixture B into a disc granulator or a drum granulator, keep the rotating speed, slowly and evenly add the solution A into it, and prepare ...
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