The experiment was designed with random grouping and repeated three times. With biological statistics, we studied biological effects of different dosages of onion stem inhibitor upon different L1 generation onion varieties. 采用随机区组设计,重复三次,利用生物统计学方法,探讨不同苔葱抑制剂剂量、不同洋葱品种L1代的生物学表现。