FIELD: agriculture. SUBSTANCE: device has tanks placed in a trench 6 provided with hollow perforated membranes made movable in vertical plane. Tank 7, bottom 8 and lateral sides 9 of the tank are made of endless netted bands provided with drives. Drum axles are coupled by means of conical gears. Hollow film provided with mechanisms for its moving is positioned above the upper tank base at a given angle. EFFECT: enhanced efficiency. 2 cl, 5 dwg
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