Method for rapidly providing medium and microelement nutrients to granular fertilizer
A technology of medium and trace elements and granular fertilizers, applied in fertilizer mixtures, ammonium orthophosphate fertilizers, layered/coated fertilizers, etc., can solve problems affecting chlorophyll synthesis, nitrate accumulation, and restricting agricultural development, and achieve flexible formula switching , Add the effect of minimalist process
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Embodiment example 1
[0038] Provide zinc and sulfur elements for urea granules, the target is: urea + 0.8% Zn + 1% S (the mass fraction of urea granules is 0.8% zinc and 1% sulfur)
[0039] Medium and trace element nutrient formula:
[0040] Zinc oxide powder 25% + sulfur powder 25% + 38% water + 1% sodium naphthalenesulfonate formaldehyde condensate + 5% ethylene glycol + 1% dextrin + 1.5% ethanol + 3% bentonite + 0.5% brilliant blue pigment.
[0041] Coating step:
[0042]In the disc coating machine, add 40 kg of the above-mentioned medium and trace element coating agent to 1 ton of urea granules, and stir quickly until the surface of all urea is uniformly blue, that is, the formula is urea + 0.8% Zn +1% S granular urea fertilizer product containing medium and trace elements.
Embodiment example 2
[0044] Provide boron element for granular compound fertilizer. The target is: compound fertilizer +0.16% B (the mass fraction of boron element wrapped in compound fertilizer particles is 0.16%).
[0045] Medium and trace element nutrient formula:
[0046] 600 mesh boron oxide powder 50%+36% water+5% sodium lignosulfonate+3% ethylene glycol+2% dextrin+0.5% ethanol+3% bentonite+0.5% lemon yellow pigment.
[0047] Coating steps:
[0048] In the disc coating machine, add 20 kg of the above-mentioned medium and trace element coating agent to 1 ton of compound fertilizer granules, and stir quickly until the surface of all compound fertilizers is uniformly blue, and the formula is compound fertilizer+ 0.16% B granular compound fertilizer product containing medium and trace elements.
Embodiment example 3
[0050] Provides zinc and sulfur elements for diammonium phosphate (DAP). The goal is: DAP+1.6%Zn+3%S (1.6% zinc and 3% sulfur are wrapped around the DAP particles)
[0051] Medium and trace element nutrient formula:
[0052] Zinc oxide powder 20% + sulfur powder 30% + 39% water + 2% sodium polyacrylate + 2% sodium dioctyl sulfosuccinate + 2% dextrin + 1.5% ethanol + 3% bentonite + 0.5% brilliant blue pigment.
[0053] Coating steps:
[0054] In the mixer, add 100 kg of the above medium and trace element coating agent to 1 ton of diammonium phosphate particles, and stir quickly until the surface of all the diammonium phosphate is uniformly blue, that is, the formula is DAP+1.6% Zn+3%S granular diammonium phosphate fertilizer product containing medium and trace elements.
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