3～4月份是春播蔬菜育苗的重要时期,但此时常遇连绵阴雨低温天气,甚至下雪或冰雹,往往引起沤根死苗,沤根是由高湿低温造成的生理病害。 发生汇报时,根部不发新根,根皮发朽腐烂,幼苗萎蔫,并容易拔起。防治沤根的措施:一是保温育苗。采用温床育苗或地膜覆盖育苗,能提高土温和环境温度,是防止沤根的有效方法。二是搞好管理。根据天气变化,采取清沟沥水,防止土壤渍 March to April is an important period of spring sowing of vegetables, but at this time, frequent occasional rain and cold weather, or even snow or hail, often cause root dead seedlings, root is caused by high humidity and physiological diseases. Occurrence of the report, the root does not send new roots, decay rotten root bark, seedlings wilting, and easy to pull up. Prevention and treatment of root measures: First, incubation nursery. Use of hotbed nursery or plastic film cover nursery, can increase the soil temperature and ambient temperature, is an effective way to prevent plover root. The second is to improve management. According to the changes in the weather, take the gully drain to prevent soil stains