人们把事先配置好的营养土装进塑料袋或纸袋内,直接在袋内播种或移植而培育成的树苗,称之为袋苗。使用袋苗植树,经济省事,移栽方便;由于带土、带肥,又是全苗栽植,根系保护完整,因而成活率较裸根苗高得多,一般可达到百分之九十以上;且缓苗期短,幼苗生长旺盛,是提高造林成活率的有效措施。栽植袋苗要想达到预期效果,必须正确掌握移 People pre-configured nutritious soil into plastic bags or paper bags, directly sacked or transplanted in bags and nurtured into saplings, called bags. The use of bags of seedlings planting trees, economical and easy, easy transplanting; as with soil, with fertilizer, but also the whole seedlings planted, complete protection of the root, so the survival rate is much higher than the naked root seedlings, and can generally reach more than 90 percent; and Huanmiao short, vigorous growth of seedlings, is an effective measure to improve the survival rate of afforestation. Planting bag in order to achieve the desired effect, we must correctly grasp the shift