The seedlings of L. principis-rupprechtii, treated by means of root soaking in GGR6, would be beneficial to raise survival rate for afforestation and to increase growth rate.
造林前用双吉尔—GGR6号植物生长调节剂对华北落叶松苗进行浸根处理，可提高造林成活率和林木生长量。
2
Shannxi Province is the fittest area for growth and development of Larix principis-rupprechtii, that constituting the main body of Chinese Larix principis-rupprechtii resource.