| 摘要 |
Tunnel sprayer for rows of plants, is of the type having opposing shields (S, S') which substantially cover the whole heights of the opposing sides of at least one row, and which comprise fans ( 14 ) to create a flow of air which in delivery travels parallel to the flow of treatment liquid sprayed on to each side of the row by at least one corresponding bar ( 22 ) with nozzles ( 122 ) and which in intake sucks in the air and treatment liquid delivered by the shield operating on the other side of the row, so as to avoid the dispersion due to wind drift and limit losses in the air and drips of excess liquid on to the ground. In each shield (S, S') the area of the mouth or mouths ( 18, 19 ) for the delivery of the pressurized fluid is suitably smaller than the sum of the area of the apertures ( 13 ) occupied by the fans ( 14 ), in such a way that the said delivery mouth or mouths give out corresponding air flows whose flow rates and pressures are uniformly distributed and substantially constant over the whole height of this delivery mouth or these delivery mouths.
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