一年生的

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

摘要菟丝子是苜蓿田中最常见一年寄性恶性杂草，是世界性杂草检疫对象。

Herbs paludose or aquatic, perennial or under unfavorable conditions annual.

草或水，多年或在不利状况下为一年草。

The kind of plant is a hardy annual.

这种是耐寒一年。