For clubroot disease, 8 times solution of 75% chlorothalonil and 15 times solution of 1% cyazofamid were used to disinfect the seedbed; 5% fluazinam is selected for soil treatment before transplanting; Before sowing, 75% chlorothalonil, 7% thiophanate-methyl and 2% dry seed amount were used for seed dressing; 1% cyazofamid 15 times solution was used in field stage. FYI