Acceptable compounds or positive oxides or salts in agriculture, and compounds used to control harmful plant toxins fungi. In addition, a mixture containing at least one such compound and at least one active substance as another pesticide selected from the group of herbicides, protectors, fungicides, insecticides and plant growth regulators； And an agricultural chemical composition including at least one of the compounds and also seeds. 1. Characteristic 1: a compound with the following characteristics: A is phenyl, or 5 or 6-member heteroaromatic cycle,In addition to carbon atoms, the atoms in the ring also include 1, 2, 3 or 4 heteromorphic atoms selected from n or s as the atoms in the ring； group A of the cycle is not replaced or replaced by the same or different group 1, 2, 3 or 4 RA； in group A of the cycle, halogen, cyanogen, No.8322；Oh, nh832222,SH, di-C₁₋₆-alkylamino, C₁₋₆-alkyl, C₁₋₆-alkoxy, C₁₋₆-alkylthio, C₁₋₆-alkylsulfinyl, C₁₋₆-alkylsulfonyl, C₂₋₆-alkenyl, C₂₋₆- alkynyl, C₃₋₈-cycloalkyl or C₃₋₈ cycloalkoxy； and wherein any of the aliphatic or cyclic moieties are unsubstituted or substituted with 1, 2, 3 or 4 identical or different Rᵃ groups； where Rᵃ is halogen, cyano, NO₂,Oh, SH, nh832222,C₁₋₆-alkyl, C₁₋₆-haloalkyl, C₁₋₆-alkoxy, C₁₋₆-haloalkoxy, C₁₋₆-alkylthio, C₁₋₆-haloalkylthio or C₃₋₈-cycloalkyl, C₁₋₄-alkoxy-C₁₋ ₄-alkyl； R¹,They are independent,hydrogen, C₁₋₆-alkyl, C₂₋₆alkenyl, C₂₋₆-alkynyl, C₃₋₆-cycloalkyl, C₃₋₆-cycloalkenyl, C (= O) - (C₁₋₆-alkyl),C (3DO) - (C -alcoxi)phenyl-C₁₋₄-alkyl, heteroaryl-C₁₋₄-alkyl, phenyl, naphthyl or a saturated, partially unsaturated or aromatic 3- to 10-membered monocyclic or bicyclic heterocycle, wherein the ring member atoms of said monocyclic or bicyclic heterocycle include, in addition to carbon atoms, 1, 2, 3, or 4 additional heteroatoms selected from N, O, and S as ring member atoms, and wherein 1 or 2 ring member carbon atoms of the heterocycle may be replaced by 1 or 2 groups independently selected from C (
