朝阳地区,十年九旱,造林成活率很低。在石质山地采用常规的技术方法栽油松,造林成活率更低。实践证明,石质山地栽油松,必须根据石质山地“干旱、瘠薄、石头多”的特点,采取相应的技术措施,才能确保造林成活,使造林成活率达到90％以上。在石质山地栽油松,要采用2年生油松壮苗。苗木根系要发达,根冠比要小,地上部分的幼苗必须粗壮,木质化程度好。苗木要随起、随运、随栽。苗木包装时根系和草袋上要喷水,运输时尽量防止风吹日晒,运到造林地后马上假植。从起苗到栽植的全过程都要注意苗木保湿。栽植时要栽一批取一批,取 Chaoyang area, nine drought ten years, afforestation survival rate is very low. In the stony hill using conventional techniques planted pine, afforestation survival rate is lower. Practice has proved that planting pine in stony mountainous areas must adopt the corresponding technical measures according to the characteristics of “arid, infertile and many stones” in stony mountainous areas in order to ensure afforestation survival and afforestation survival rate above 90%. Planted pine in the stony mountainous areas, to use 2-year-old pine seedlings. Seedling root system to be developed, root and shoot smaller than the ground part of the seedling must be robust, good degree of lignification. Seedlings to follow, with Yun, with planted. When seedling packaging root and grass bag to be sprinkled water, transportation, try to prevent the wind and sun, shipped to the afforestation immediately after planting. From seedling to planting the whole process should pay attention to nursery stock moisture. When planting a batch to take a batch, take