Mixed type sustained and controlled release chemical fertilizer
A slow and controlled release chemical fertilizer, mixed technology, applied in fertilizer mixtures, fertilization devices, applications, etc., can solve the problems of inability to achieve consistency, poor synchronization of crop absorption, and high costs, and achieve the effect of reducing costs.
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[0031] 1) Ingredients: According to the ingredients shown in the table below
[0032] Example 1 Example 2 Example 3 Example 4 Example 5 Ordinary chemical fertilizer, Kg 5 10 15 20 25 Slow release fertilizer, Kg 95 90 85 80 75
[0033] The common chemical fertilizer is one of monoammonium phosphate, diammonium phosphate, ammonium superphosphate, calcium magnesium phosphate, potassium chloride and potassium sulfate, or any mixture of several kinds.
[0034] The slow-release fertilizers are commercially available slow-release fertilizers added with urease inhibitors, esterification inhibitors, and nitrification inhibitors; or resin-coated fertilizers. For example: long-acting ammonium bicarbonate, long-acting urea, etc.
[0035] 2) Preparation method:
[0036] The mixed slow-release chemical fertilizer of the present invention is obtained by uniformly mixing common chemical fertilizers and slow-release chemical fertilizers or controlle...
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