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联邦德国黑森州苗圃利用扦插育苗的方法,每年培育挪威云杉苗9200多万株,占本州云杉造林用苗的60％,扦插成活率为95％以上,60天就可生根发芽,现将主要技术措施介绍如下:1.插床在长15米,宽8米,棚中心高4米的塑料大棚内筑两个高0.7米的水泥池子,四周和中间留有0.4米宽的步道,池子由上至下分别放入直径0.3—0.7厘米,2—4厘米,5—8厘米的河卵石,其厚度分别为20厘米、15厘米、35厘米,池子底部四周均留有排水孔。
The federal Hesse nursery in Germany used the method of cuttage nursery to cultivate more than 92 million Norwegian spruce seedlings per year, accounting for 60% of spruce seedlings in the state. The cutting survival rate is above 95% The main technical measures are introduced as follows: 1. Slotting in the 15 meters long, 8 meters wide, shed 4 meters high plastic greenhouse to build two 0.7-meter-high cement pool, surrounded by a 0.4-meter wide and the middle of the trail, the pool From top to bottom were placed diameter 0.3-0.7 cm, 2-4 cm, 5-8 cm of river pebbles, the thickness of 20 cm, 15 cm, 35 cm, the bottom of the pool all have drainage holes around the bottom.