| 摘要 |
<p>Apparatus for treatment of crops, especially weeds growing to a greater height than that of the crop, comprising a rotating application roller (15) which is maintained at a predetermined level above the ground, and a liquid chemical coating means which includes at least one roller (16 or 31) in rolling contact with the application roller and acting in use continuously to coat the application roller with chemical liquid which is gelled by means of a thickening agent.</p> |
