Claim 1: a compound (1) selected from the formula,N-nitrous oxide and its salts, wherein: Q1 is a phenyl ring or nano silver ring system； each ring or ring system can be replaced by up to five selected r8310 substitutes；Or 4-7-member heterocyclic ring or 8-10 member double cyclic ring system, each ring or ring system contains ring members selected from carbon atoms and 1-4 selected heteromorphic atoms, independent of up to 2 O atoms, up to 2 S atoms and up to 4 N protons, Among them, up to three carbon ring members are independently selected from C (= O) and C (= s),The members of sulfur atom in the ring are selected from s (= O) 751222 (= n8311) 7515e independently；Each ring or ring system can be replaced by up to five carbon ring members independently selected from r83100s and selected from r831222 in nitrogen ring； Q2 is phenyl ring or northwest ring system； each ring or ring system. a. Alternative to up to 5 selected r8313 alternatives；Or 4-7-member heterocyclic ring or 8-10 member double cyclic ring system, each ring or ring system contains ring members selected from carbon atoms and 1-4 selected heteromorphic atoms, independent of up to 2 O atoms, up to 2 S atoms and up to 4 N protons, Among them, up to three carbon ring members are independently selected from C (= O) and C (= s),The members of sulfur atom in the ring are selected from s (= O) 751222 (= n8311) 7515e independently；cada anillo o sistema de anillo est sustituido opcionalmente con hasta 5 sustituyentes seleccionados independientemente de R en miembros de anillo que son tomos de carbono y seleccionados de R en miembros de anillo que son tomos de nitr geno J es -CR R - o -CR R I am what I am.-N (R) - o -C (R) (R) -Y1 is O, s or nhr1；Y es O S R es H hidroxi amino ciano formilo alquilcarbonilalquilo C1. Lease land No. c833218331 and 832626；haloalkyl C₁₋₆,C₂₋₆ alkenyl,1. C 83238331 asphalt；cyanoalkyl C₂₋₆,cycloalkyl C₃₋₆,cycloalkylalkyl C₄₋₈,C₂₋₈ alkoxyalkyl,a. Halogenated alcoxico c83228c83318328；halo
