菟丝子是一种恶性寄生杂草,列为国际检疫对象。它不但直接为害作物,造成减产和降低品质,而且还能传播作物的多种毒素病和细菌性癌瘤病,使作物遭受巨大损失。菟丝子在山东及我国许多大豆和亚麻产区均有发生,为害严重。据调查山东大豆因此而减产,一般为10-20%,重者达40%以上,或颗粒无收。显然研究菟丝子的防除方法是十分重要的。国内对此虽有报导,然而很少谈豆田菟丝子的生物学特性及其防治问题。国外虽有不少菟丝子文献但多偏重于形态和生物学特性的描 Dodder is a vicious parasitic weeds, as an international quarantine object. Not only does it directly damage crops, causing losses in production and quality, but it also transmits a wide range of crop toxins and bacterial carcinomas, causing huge losses to crops. Dodder in Shandong and many of our soybean and flax production areas have occurred, serious damage. According to a survey of Shandong soybean production, which is generally 10-20%, more than 40% of the heavy, or crop failure. Obviously, it is very important to study the method of controlling dodder. Although the domestic reports on this, however, seldom talk about the biological characteristics of dodder and its control problems. Although there are many foreign dodder literature but more emphasis on morphology and biological characteristics of the description