| abstract |
The invention belongs to the technical field of pesticides, and particularly relates to heterocyclic aryl carboxamides or salts thereof, a preparation method, a weeding composition and application. The structural formula of the heterocyclic aryl formamide compound or the salt thereof is as follows: wherein X, Z each independently represents nitro, halogen, cyano, formyl or the like; y represents Het represents a nitrogen-containing heterocycle which, in addition to the C and the N atom in position 1, contains from 0 to 4 of the following atoms or groups as ring members: o, CO, N, NR b 、S、SO、SO 2 (ii) a M represents The compound has excellent herbicidal activity and higher crop safety, and especially establishes good selectivity for key crops such as wheat, rice, corn and the like. |