毛白杨是北京地区的优良乡土树种,生产上多用埋条方法繁殖,但由于该法产苗量低(亩产1,500棵左右)和苗木有“拐棒根”等缺点,限制了这一树种的发展。因此,我们于1978—1980年和1983—1984年,前后经过五年的实验,总结出“毛白杨侧方灌溉埋条法”,亩产苗量稳定在4,000棵左右,苗高2.0米,地际茎粗1.5厘米,根系完整,无一 Populus tomentosa is an excellent native tree species in Beijing. Breeding is mostly based on the use of buried strips. However, due to its short production of seedlings (about 1,500 mu per mu) and “seedling root” of seedlings, Populus tomentosa development of. Therefore, we conducted a five-year experiment from 1978-1980 and 1983-1984 to summarize the “Buried Poplar Blindfloat Method”, in which the yield per mu is about 4,000 and the height is 2.0 m. Stem diameter of 1.5 cm, root system integrity, none