| 摘要 |
<p>Novel phenylurea derivatives of the general formula <IMAGE> (wherein R1 represents H, C1-C4- alkyl, C2-C4-alkenyl, C2-C4-alkynyl or OCH3, R2 and R3 each represents H or C1-C4-alkyl, R4 and R5 each represents halogen, each X represents H, C1-C4-alkyl, halogen or OCH3 and n represents 1 or 2) have a herbicidal action and accordingly may be made up with suitable carriers into herbicidal preparations and may be used for protecting living plants, crop areas and waste lands against weeds.</p> |
