将不同带菌程度的菜豆种子用５０％多菌灵可湿性粉剂进行拌种，室内试验表明：药剂拌种可降低幼苗子叶的病情，并能减少分生孢子的形成。但随种子病情加重，防治效果明显下降。对同级病种孢子层形成的防效明显优于子叶对病情的防效。 Seed germination of 50% carbendazim WP was used for seed dressing of bean seeds with different degrees of infection. Laboratory tests showed that seed dressing could reduce seedling leaf cotyledons and reduce conidia formation. However, with the aggravation of the seed disease, the prevention and control effect decreased significantly. For the same level of disease spore layer formation control superior to cotyledons on the disease control effect.