The dodder is one kind of annual autoecious weed of alfalfa, cosmopolitan weed quar ine object.

菟丝子是苜蓿田中最常见的一年生寄生性恶性杂草，是世界性的杂草检疫对象。

The dodder is one kind of annual autoecious weed of alfalfa, cosmopolitan weed quarantine object.

菟丝子是苜蓿田中最常见的一年生寄生性恶性杂草, 是世界性的杂草检疫对象.