1材料与方法基质。育苗基质取自图强林业局苗圃生产的泥炭土,其养分含量为有机质7.73%、全氮1.06%、全磷0.14%、全钾1.08%、PH6.92。采用该土可保证苗期不用施肥。试验场所。在温室内,温室为玻璃棚顶,以利光照。侧墙设有适量通风孔,四周要严密并有增温设备。 1 Materials and methods matrix. The nursery substrate was obtained from peat soil produced by the nursery of Tuqiang Forestry Bureau. The nutrient contents were 7.73% of organic matter, 1.06% of total nitrogen, 0.14% of total phosphorus, 1.08% of total potassium and PH6.92. The soil can be used to ensure seedling without fertilization. Test site. In the greenhouse, the greenhouse is a glass roof to facilitate the light. Side wall with the right amount of ventilation holes around to be tight and warming equipment.