随着果树集约栽培的发展,对苗木数量和质量的要求越来越高.从目前国外果树育苗的发展趋势可以看出,一是如何缩短育苗的年限,二是育出的苗木要有分枝,生长健壮,定植后2～3年就能结果. 美国在研究快速育苗的方法时,用苗圃或温室建立适宜的栽培条件,如温度、光照、营养、水分等.通过改变植株生长的外界条件,打破其休眠期,可比常规育苗提早一年获得发育标准的苗木. With the intensive cultivation of fruit trees, the requirements for the quantity and quality of seedlings are getting higher.From the current development trend of fruit tree seedlings in foreign countries, we can see that one is how to shorten the years of nursery seedlings, , Robust growth, 2 to 3 years after planting can result.United States in the study of rapid seedling methods, nursery or greenhouse to establish appropriate cultivation conditions, such as temperature, light, nutrition, water, etc. By changing the external conditions of plant growth , To break its dormant period, than the standard seedling development standard seedlings one year earlier.