一、选好整好苗床。蔬菜苗床应选择管理方便、土质肥沃、地下水位低、不粘重板结的半沙、半泥土,而又不是连作地做苗床。并及早撒施生石灰粉,实行深翻炕土,以减少病源。整地要做到下虚上实,窄厢深沟,以利排水透气。二、搞好种子处理。播种前应先用50度左右的温水泡种10分钟,然后再放入凉水中浸泡1—2小时,滤出晾干后随即播种。三、加强苗床管理。播种出苗后,土壤应保持 First, choose a good seedbed. Vegetable seedbed should choose to facilitate management, fertile soil, low groundwater level, non-stick heavy plate half-sand, semi-earth, but not even as a seedbed. And early spreading lime powder, the implementation of deep turn Kang bed soil, in order to reduce the source. To make up the ground under the virtual reality, narrow deep groove to facilitate drainage of breathable. Second, improve seed processing. Sowing should be about 50 degrees with warm water soak for 10 minutes, and then soak in cold water for 1-2 hours, filtered out and dried immediately sown. Third, to strengthen seedbed management. After sowing, soil should be kept