In addition, the composition of these compounds and methods for controlling unwanted vegetation are described； these include linking unwanted vegetation or its environment to an effective amount of a compound or current composition. 1. Claim 1: a selected formula compound (1),N-oxides and salts of these substances, where Q1 is a phenyl ring or a nano silver ring system； each ring or ring system can be replaced by up to five alternatives selected independently from r8311；Or a completely unsaturated 5-6-member heteroaromatic ring or 8-10 member heteroaromatic bicyclic ring system； each ring or ring system contains ring members selected from carbon atoms and 1-4 selected heteroatoms, but no more than 2 O atoms, Up to 2 S atoms and up to 4 N atoms, of which up to 3 carbon ring members independently choose C (=O) and C (=S),The sulfur atom in the ring is independent of S (= O) 751222 (= n831222) 7515e；Each ring or ring system can be replaced by up to five ring parts belonging to carbon atom and ring parts belonging to nitrogen atom selected from r8313 in r8311； Q2 is a phenyl ring or a natalene ring system； Each ring or ring system can be replaced by up to five independent r83044 alternatives；Or completely unsaturated 5-6-member heteroaromatic ring or 8-10 member heteroaromatic bicyclic ring system； each ring or ring system contains ring members selected from carbon atoms and 1-4 selected heteroatoms, but no more than 2 O atoms, Up to 2 S atoms and up to 4 N atoms, of which up to 3 carbon ring members independently choose C (=O) and C (=S),The sulfur atom in the ring is independent of S (= O) 751222 (= n831222) 7515e；a. Each ring or ring system can be selected from the carbon atom ring members independently of r83044 and from the nitrogen atom ring members selected from R111； Y1 and Y2 are o, s or nr8310, respectively；R¹ is H, hydroxyl, amino, C₁₋₆ alkyl,haloalkyl C₁₋₆,C₂₋₆ alkenyl,1. C 83238331 asphalt；C₂₋₈ alkoxyalkyl,a. Halogenated alcoxico c83228c83318328；Asphalt c83
