rầy vằn
Definition
- Noun:
- Brown planthopper (scientific name: Nilaparvata lugens): A small, winged insect pest that primarily feeds on rice plants, causing significant agricultural damage. It is characterized by its brown color and distinctive striped markings.
- A type of planthopper: More generally, it can refer to certain striped or variegated species of planthoppers within the family Delphacidae.
Usage Examples
- Noun:
- Rầy vằn là một loại côn trùng gây hại nghiêm trọng cho lúa. (The brown planthopper is an insect that causes serious damage to rice.)
- Nông dân đang tìm cách phòng trừ rầy vằn. (Farmers are looking for ways to prevent and control the brown planthopper.)
Advanced Usage
- The term is primarily used in agricultural and entomological contexts. It is often part of compound terms related to pest management.
- "rầy vằn hại lúa": brown planthopper damaging rice.
- Mùa này thường xuất hiện dịch rầy vằn hại lúa. (This season often sees an outbreak of brown planthoppers damaging rice.)
Variants and Related Words
- Rầy nâu (n): Another common name for the brown planthopper, often used interchangeably with "rầy vằn."
- Rầy (n): A general term for planthopper or leafhopper insects.
Synonyms
- Brown planthopper: The standard common name in English.
- Rice planthopper: A general term indicating its host plant.
Notes
- The reference to "" in some dictionaries is an older or alternative scientific classification. The modern, primary scientific name for the major pest species is .
- This pest is known for sucking sap from rice plants, which can lead to "hopperburn" (yellowing and drying of plants) and can also transmit viral diseases to the crop.