杉木是我国南方的重要用材树种，分布广，生长迅速，是产区人民喜爱的造林树种。历史上杉木造林习惯于见种就采，见苗就栽，不注重种子来源和优劣。 60年代湖南省林业厅明确规定造林用种由会同、双牌等基地县提供，并着手建立母树林，部分用种来源于挂牌母树，种子质量有了很 Cunninghamia lanceolata is an important timber species in southern China. It is widely distributed and rapidly growing. It is an afforestation species favored by people in the producing areas. History of afforestation in the woods see the mining, see seedlings planted, do not pay attention to the source and advantages and disadvantages of the seed. In the 1960s, Hunan Provincial Forestry Department clearly stipulated that afforestation planting should be provided by Huitong, Shuangpai and other counties and counties, and started to establish the mother woods. Some of the seeds were from the parent trees, and the seed quality was very good