| 摘要 |
PURPOSE:An insecticidal and acaricidal composition, containing avermectin B1 and a pyrethroid based compound together, and having synergistically improved insecticidal and acaricidal action. CONSTITUTION:An insecticidal and acaricidal composition, obtained by incorporating avermectin B1 of formula I (R1 is C2H5 or CH3), i.e. a mixture of avermectin B1a (R1 is C2H5) with avermectin B1b (R1 is CH3), which is a macrolactone compound produced by Streptomyces avermitilis with a compound of formula II [X is N, CH or CF; R4 is H, CN or CidenticalCH; A is formula III or IV; R5 and R6 are the same and CH3 or R5 is H and R6 is CH=C(CH3)2, CH=CCl2, CH=CBr2, CHBrCBr3, CHBrCBrCl2 or CH=CClCF3; R7 and R8 are H, halogen, 1-4C alkyl, 1-4C alkoxyl, OCF3 or OCHF2, or R7 and R8 form OCH2O) as active constituents preferably 1:1-1:50 mixing weight ratio between the compounds of formulas I and II, and having improved synergistic effect. |
