| 摘要 |
A method and a device for spraying agricultural chemicals into the air by the use of a balloon and a technique enabling the operator on the ground to easily spray agricultural chemicals over a wide area while moving the balloon afloat in midair. The invention makes it possible to feed liquid chemicals from a compression pump into nozzles of the annular distribution piping coupled with the balloon through a hose and to spray said chemicals in a constantly high midair, whereby exhibited are such effects as an improvement in operation efficiency owing to an enlarged range over which chemicals are sprayed and as easiness in promoting safety thanks to isolation of said range from the operator. |
