Claim 1: a compound (1) selected from the formula,N-oxide and its salts, including WS-C (r8311a) (r831222) - U-O -；R¹ is H, C₁₋₇ alkyl,C₃₋₈-alkylcarbonylalkyl, C₃₋₈-alkoxycarbonylalkyl,C₄₋₇-alkyl-cycloalkyl, C al-alkenyl,1. C 83238331 asphalt；cycloalkyl C₃₋₇,cycloalkylalkyl C₄₋₇,cyanoalkyl C₂₋₅,nitroalkyl C₁₋₄,a. Halogenated ALCOXY c833228d3183277a,haloalkyl C₁₋₇,haloalkenyl C₂₋₇,C₂₋₇ alkoxyalkyl,C₃₋₇-alkylthioalkyl or C₁₋₇-alkoxy；R2 is h, halogen, cyanogen, CHO, tar c833218331；C₃₋₈-alkylcarbonylalkyl, C₃₋₈-alkoxycarbonylalkyl,1. C83217c833183248a asphalt；alquil C -carboniloxi alquil C -cicloalquilo alquenilo C1. C 83238331 asphalt；C₁₋₄-sulfinyl alkyl, C₁₋₄-alkyl sulfonyl, C₁₋₄-amino alkyl, C amino-amino dialkyl, C₃₋₇ cycloalkyl,cycloalkylalkyl C₄₋₇,cyanoalkyl C₂₋₅,nitroalkyl C₁₋₄,a. Halogenated ALCOXY c833228d3183277a,haloalkyl C₁₋₇,haloalkenyl C₂₋₇,C₂₋₇ alkoxyalkyl,C₁₋₇ alkoxy,C₁₋₅-thio alkyl or C₂₋₃-carbonyl alkoxy； each R³ is independently H, halogen, nitro, cyano, C₁₋₅ alkyl,C₂₋₅ alkenyl,C₂₋₅ alkynyl,cycloalkyl C₃₋₇,C₄₋₅-cycloalkyl-alkyl, C₁₋₅-haloalkyl,haloalkenyl C₂₋₅,haloalkynyl C₃₋₅,C₂₋₅ alkoxyalkyl,C₁₋₅ alkoxy,haloalkoxy C₁₋₅,C₁₋₅-alkyl thio, C₁₋₄-alkyl sulfinyl, C₁₋₄-alkyl sulfonyl, haloCquil-thioalkyl or C₂₋₅-carbonyl alkoxy； n is 0 to 3； each R⁴ is independently H, halogen, nitro, cyano, C₁₋₅ alkyl,C₂₋₅ alkenyl,C₂₋₅ alkynyl,cycloalkyl C₃₋₅,C₄₋₅-cycloalkyl-alkyl, C₁₋₅-haloalkyl,haloalkenyl C₂₋₅,haloalkynyl C₃₋₅,C₂₋₅ alkoxyalkyl,C₁₋₅ alkoxy,haloalkoxy C₁₋₅,C₁₋₅-alkyl thio, C₁₋₄-alkyl sulfinyl, C₁₋₄-alkyl sulfonyl, haloCquil-thioalkyl or C₂₋₅-carbonyl alkoxy； R⁵ is H or C₁₋₅ alkyl；Rent r8310h or c8332131； 832525；R8311811 is rent h or c8332131； 832525；R831222 is rent h or c832131；L is a direct bond, C alcan-diícan reach or C₂₋₄-diílo alkene； G is H, C (= O) R⁹,C (3DS) RCO₂R¹⁰,C (3DO) SRS (O) RC (3DO) N (R) (R)S (o) 8322； (n (R1) (R1 Square) or P (= O) (R1 3) (r8308)；or C₁₋₇ alkyl,C₂₋₅ alkenyl,1. C 83228331 asphalt；haloalkyl C₁₋₇,haloalkenyl C₂₋₅,haloalkynyl
