Larix gmelinii is native to the Greater and Lesser Khingan Mountains and is an indigenous tree species in Northeast China.The second-generation seed orchard of Larix gmelinii was established in the Ulanba Forest Farm,a national Larix gmelinii breeding base,in 2020.This orchard covers an area of 1 hectare and was built using 28 superior clones selected through the five-tree method from progeny test forests.This paper analyzes the key techniques for establishing the second-generation Larix gmelinii seed orchard,covering aspects such as the selection of orchard materials,establishment process,tending management,and tree form management,with the aim of providing a reference for the construction of second-generation Larix gmelinii seed orchards in Northeast China.
维普
万方数据