| 摘要 |
<p>The m-cyanoalkoxy-phenylureas of the formula I (I), wherein X is hydrogen or halogen, Y-O is a preferably branched-chain cyanoalkoxy group, R1 is hydrogen or lower alkyl, and -NR2H3 is a primary, secondary or heterocyclic amino group-, exhibit surprisingly good plants, with a selective action in crops of maize, cereals, cotton and soya bean, and in the case of some of these compounds also in rape crops.</p> |
