柳杉是扦插容易生根的树种,但从使用精英树(优树)证明,个体间的发根程度差异是很显著的,这就成了育种工作的障碍。特别是日本东北部早春地温低、湿度小,露地扦插育苗就更为困难了。为了创造扦插生根的最适宜地温和湿度,采用了喷雾棚装置,现将插条生根的研究结果概述如下。 Cryptomeria fortunei is a cuttage easily rooted species, but from the use of elite trees (tree) to prove that the degree of hair root difference between individuals is very significant, which has become an obstacle to breeding work. Especially in northeastern Japan in early spring low temperature, humidity, cuttings exposed nursery is even more difficult. In order to create the most appropriate temperature and humidity cutting rooting, the use of a spray shed device, now cuttings rooting results are summarized below.