| 摘要 |
A field sprayer has a pair of outwardly extending booms each formed by an enclosure having an upper wall of inverted V-shape with an airfoil at the apex for re-directing air rising on one side down the other side to avoid turbulence. The enclosure on the leeside thereof supports a plurality of jet nozzles which project through an opening in the enclosure. A front wall depending downwardly from the front edge is formed of two parallel flexible layers with vertical staggered slits whereby it can flex rearwardly as the enclosure moves forwardly by contacting the plants. The jet is directed to a position immediately behind the rear edge of the front wall in flexed position so as to engage the plants when bent forwardly. Ground wheels are arranged at the outer ends of the booms and a single central pivot supports the inner ends for movement to a trailing transport position.
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