FIELD: agriculture. SUBSTANCE: device has hollow membranes-shaftformers-aerators placed in rows. Even rows are connected with the low pressure chamber and provided with vacuum pump. The odd rows are connected with the gage pressure chamber with the help of pipes and provided with electrically heated ventilator. Hollow membranes-shaftformers may be constructed as double spirals, multisized circles or ovals, multisized polyhedrons positioned coaxially to each other, sleeves. EFFECT: improved design. 5 cl, 8 dwg
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