一、生根粉蘸根造林技术华北落叶松造林应用生根粉浸根,可促进苗木根系伤口愈合和须根的生长,从而更好地提高造林成活率,增加苗木生物量生长。笔者对河北省塞罕坝机械林场千层板林场马蹄坑作业区以不同浓度的ABT生根粉3号处理2年生华北落叶松一级 First, rooting powder dipping root afforestation technology Larix principis-rupprechtii can be used to promote rooting wound healing and fibrous root growth, so as to better improve the survival rate of afforestation and increase the growth of nursery stock biomass. The author of Hebei Province Saihanba mechanical forest farm Melaleucaochang horseshoe pit operating area with different concentrations of ABT root powder 3 to deal with 2-year-old Larix principis-