To effectively control the axillary bud growth and enhance anti-lodging capacity after topping in flax, four kinds of sucker controlling agents (30.2% yawei EC, 25% yake SL, 25% yiyamin EC, 33% chuyatong EC) were used on field experiment for inhibiting sucker and anti-lodging in flax. The results showed: four kinds of sucker controlling agents had more or less inhibiting effect and its anti-lodging effect was evident after treated; The agrinomy yield reduced and craft yield increased respectively; Yiyamin and chuyatong had better inhibition ...