甘薯皮薄、体积大、水分多、质脆容易破皮擦伤,易染病和发生冷、冻害,故在收、运、贮藏过程中稍有疏忽,就会造成烂窖。甘薯造成烂窖的主要原因是冻害和病害,其次是湿害、干害和缺氧等。甘薯受冻害,主要是由于收刨过晚,在田间处于9℃以下低温时间较长,或收后没有及时入 Sweet potato thin, bulky, watery, crisp and easy to break the skin abrasions, easy to infection and cold, frost damage, so in the collection, transportation, storage a slight negligence, it will cause bad cellar. The main causes of sweet potatoes caused by freezing are cold damage and disease, followed by wet damage, dry damage and lack of oxygen. Frost damage to sweet potato, mainly due to the planing late, in the field below 9 ℃ low temperature for a long time, or after harvest did not promptly into