归圃育苗是将枣树根蘖苗移植到苗圃重新培育,并对其根蘖苗进行剪截并用地膜覆盖的育苗方法。采用这种方法育苗成活率在95%以上,其优点是:①剪截能控制根蘖本身水分和养分的蒸发与消耗。②剪截能改善苗木的营养运转条件,缩短养分运输距离,使养分集中供应,能有效的利用枣树基部潜伏芽生命力强的特性。③地膜覆盖能提高地温,早春盖地膜能比对照日平均地温提高2～3℃。由于地温升高,苗木根系的吸收能力增强,能促进苗木生长。④地膜覆盖能有效地利用土壤中的养分和水分。由于地膜的增温和保水作用,使土壤覆盖的 Nursery nursery is the jujube root tillers transplanted to the nursery re-culture, and its root tillering cut and covered with plastic film nursery method. Adopting this method, the survival rate of nursery seedlings is more than 95%. The advantages are: ① cutting can control the evaporation and consumption of water and nutrients of root tiller itself. ② cut can improve the nutritional conditions of nursery stock, shorten the distance of nutrient transport, nutrient concentration of supply, can effectively use the base of the bud jujube strong vitality characteristics. ③ mulching can improve the ground temperature, mulching film in early spring than the average daily control temperature increased 2 ~ 3 ℃. As the ground temperature increases, seedling root absorption capacity increased, can promote seedling growth. ④ mulching can effectively use the soil nutrients and water. Due to the plastic film warming and water retention, so that the soil cover