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的一年生寄生性恶性杂草，是世界性的杂草检疫对象。

The controlling test was carried out to the annual and perennial broadleaved weed and shrub on forestland with 24% picloram Sc.

选用24%氨氯吡啶酸水剂,对林地一年生及多年生阔叶杂草、灌木进行防除试验。