做好种子处理。菌核病的菌核,菟丝子的种子等,时常混杂在菜种里面,可以通过风选、水选或筛选的方法清除。播种前,种子先用冷水预浸3个小时左右,再用55℃的热水浸种20分钟左右,然后使用清水洗净并凉干。用3‰代森锌或代森锰锌药液浸种15分钟,可预防蔬菜苗期炭疽病,茄子褐纹病和番茄病的发生。进行床土消毒。育苗时,最好使用经过消毒之后的无病菌床土。其消毒方 Good seed handling. Sclerotinia sclerotiorum, seeds of dodder, etc., often mixed in vegetables, which can be cleared by wind, water or screening methods. Before sowing, the seeds should be pre-soaked in cold water for about 3 hours and soaked in 55 ℃ hot water for about 20 minutes, then washed with water and dried in water. With 3 ‰ dexmedetomidine or mancozeb immersion 15 minutes, can prevent anthracnose in vegetables seedling, eggplant brown pattern and tomato disease. Soil bed disinfection. Nursery, it is best to use the sterile bed soil after disinfection. Its disinfection side