Weak-acid slow controlled-release fertilizer
A controlled-release fertilizer and weakly acidic technology, which is applied in the direction of fertilizer mixture, fertilization device, agricultural gas emission reduction, etc., can solve the problems that fertilizers cannot meet, achieve high nutrient utilization rate, good physical properties, and reduce environmental pollution.
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Embodiment 1
[0028] A weakly acidic slow-release fertilizer, made of the following components by weight: 150 parts of potassium chloride, 250 parts of monoammonium phosphate, 370 parts of urea, 120 parts of ammonium chloride, 20 parts of sulfuric acid, 2 parts of urease inhibitor, 8 parts of urea-formaldehyde, 20 parts of synthetic ammonium, 2 parts of nitrification inhibitor, 4 parts of ammonia stabilizer, 0.3 part of phosphorus activator, 0.8 part of protective agent, 0.3 part of zinc sulfate heptahydrate, 0.3 part of water-soluble silicon, 1.5 parts of amino acid.
[0029] According to the national standard "Slow-release fertilizer" (GB / T 23348-2009), the slow-release fertilizer should be soaked in still water at 25°C for 24 hours, with an initial nutrient release rate of less than 15%, and a 28-day cumulative nutrient release rate of less than 80%. It can be seen from Table 1 that the product of the present invention meets the national standard.
[0030] Table 1 Comparison table of pro...
Embodiment 2
[0033] A weakly acidic slow-release fertilizer, made of the following ingredients by weight: 200 parts of potassium chloride, 200 parts of monoammonium phosphate, 400 parts of urea, 160 parts of ammonium chloride, 10 parts of sulfuric acid, 8 parts of urease inhibitor, 2 parts of urea-formaldehyde, 30 parts of synthetic ammonium, 8 parts of nitrification inhibitor, 1 part of ammonia stabilizer, 0.8 part of phosphorus activator, 0.38 part of protective agent, 0.8 part of zinc sulfate heptahydrate, 0.8 part of water-soluble silicon, and 0.8 part of organic matter.
[0034] According to the national standard "Slow-release fertilizer" (GB / T 23348-2009), the slow-release fertilizer should be soaked in still water at 25°C for 24 hours, with an initial nutrient release rate of less than 15%, and a 28-day cumulative nutrient release rate of less than 80%. It can be seen from Table 1 that the product of the present invention meets the national standard.
[0035] Table 1 Comparison tabl...
Embodiment 3
[0038] A weakly acidic slow-release fertilizer, made of the following components by weight: 185 parts of potassium chloride, 225 parts of monoammonium phosphate, 390 parts of urea, 140 parts of ammonium chloride, 15 parts of sulfuric acid, 5 parts of urease inhibitor, 5 parts of urea-formaldehyde, 25 parts of synthetic ammonium, 5 parts of nitrification inhibitor, 2 parts of ammonia stabilizer, 0.5 part of phosphorus activator, 0.5 part of protective agent, 0.5 part of zinc sulfate heptahydrate, 0.5 part of water-soluble silicon, 1 part of beneficial bacteria .
[0039] According to the national standard "Slow-release fertilizer" (GB / T 23348-2009), the slow-release fertilizer should be soaked in still water at 25°C for 24 hours, with an initial nutrient release rate of less than 15%, and a 28-day cumulative nutrient release rate of less than 80%. It can be seen from Table 1 that the product of the present invention meets the national standard.
[0040] Table 1 Comparison tabl...
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