sâu xám
Definition
- Noun:
- Cutworm: The common name for the larval stage of certain nocturnal moths (family Noctuidae). These caterpillars are typically grayish in color and are significant agricultural pests. They are called "cutworms" because they feed on young plants by cutting through the stems at or near ground level.
Usage Examples
- Noun:
- Sâu xám đã phá hủy cả vườn cà chua. (Cutworms have destroyed the entire tomato garden.)
- Nông dân cần phát hiện sâu xám sớm để bảo vệ mùa màng. (Farmers need to detect cutworms early to protect their crops.)
Advanced Usage
- The term "sâu xám" is specifically used in agricultural and entomological contexts. It refers not to a single species but to a group of caterpillar pests with similar behavior and appearance.
Variants and Related Words
- Sâu đất (n): A more general term for soil-dwelling caterpillars, which may include cutworms.
- Bướm đêm Noctuidae (n): The adult moth form of the cutworm.
Synonyms
- Cutworm: The direct and most accurate translation.
- Armyworm: A related pest, but typically refers to species that march in large groups, not all of which are gray.
Related Terms
- Thuốc trừ sâu (n): Pesticide, insecticide.
- Họ phun thuốc trừ sâu để diệt sâu xám. (They spray pesticide to kill cutworms.)
- Phá hoại mùa màng (v): To damage/destroy crops.
- Sâu xám nổi tiếng với việc phá hoại mùa màng. (Cutworms are notorious for destroying crops.)