PROCESS FOR THE PREPARATION OF COMPLEX FERTILIZER OF PROLONGED ACTION WITH WATER-RETENTIVE EFFECT

摘要

A process for the preparation of complex fertilizer of prolonged action with water-retaining effect comprises the use of polyacrylamide polymer. Powdered polyacrylamide is used in mixture with crystal salts for nutrition and protection of plants, mixed in given ratios, given to screw extruder, where under pressure and at temperature of 40-60 °C a homogenous composition is formed, which later passes through extrusion head.