FIELD: agriculture.
SUBSTANCE: encapsulated granular fertilizer is characterized in that it contains, as a starting material, granular carbamide, and as a coating sodium silicate, calcium chloride and surface anti-caking additives, with the consumption of raw material per 1 kg of carbamide, 100–150 mg of sodium silicate, 20–50 mg of calcium chloride and 1000 mg of surface anti-caking additives are used, wherein encapsulation of carbamide is carried out by irrigation with 26% solution of sodium silicate, treatment with aqueous solutions of substances, which are urease activity inhibitors, or pesticides, or paraaminophenol, irrigation with 33% solution of calcium chloride, drying at temperature from 65 °C to 90 °C, treatment with surface anti-caking additives.
EFFECT: invention improves quality characteristics of granular fertilizers to reduce the rate of dissolution thereof in soil, as well as strength and anti-caking effect of said fertilizers.
1 cl, 1 tbl, 2 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR PREPARING SLOWLY ACTING CAPSULATED FERTILIZERS | 2002 |
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| COMPOSITION FOR PREVENTING AGGLOMERATION OF CARBAMIDE | 0 |
|
SU1570255A1 |
| METHOD OF OBTAINING SLOW=ACTING FERTILIZERS | 0 |
|
SU1353767A1 |
