Fuente: WIPO "tomato" Disclosed is a substituted pyrrolidone compound, a preparation method therefor, and a composition and an application thereof. The substituted pyrrolidone compound is shown in the general formula I.






wherein, Q represents










 or the like that is unsubstituted or substituted by at least one R11; X and Y each independently represent hydrogen, alkyl, alkenyl, alkynyl, etc.; Z represents alkyl, alkenyl, alkynyl, etc.; W1 and W2 each independently represent O or S; R6 represents hydrogen, hydroxyl, halogen, etc.; R7 represents hydrogen, halogen, etc.; R8 represents hydrogen, alkyl, alkenyl, alkynyl, etc. The compound has excellent herbicidal activity against gramineous weeds and the like, and is safe and has high selectivity to crops, but also has good control activity against various fungi such as tomato gray mold, rice sheath blight, apple ring rot, etc. and agricultural pests such as lepidopterans (e.g., Spodoptera frugiperda, Mythimna separata, etc.).