杨树扦插造林“三步成林”法,即是利用杨树插穗作为造林苗木,经过3年时间过程成林的一种造林方法。其扦插造林应选择河流故道、两岸、水浇沙滩地等适宜的造林地。第一步。第一年4月20日左右,土壤解冻25厘米即可扦插,每米扦插3～4穗,田间管理要及时做好松土、防治病虫害、抹芽、施肥等工作。第二步。第二年春季平茬,将种条自行扩大扦插造林或销售。第三步。第三年春天,将留有树冠的大鞭杆苗按株行距 Poplar cuttings afforestation “three steps into the forest ” method, that is, using poplar cuttings as afforestation seedlings, after 3 years of time into forest afforestation method. The cuttings afforestation should choose the river path, the two sides, watering beach and other suitable afforestation. first step. April 20 of the first year or so, 25 cm soil thawing can be cuttings, cuttings 3 to 4 spikes per meter, field management should do a good job in a timely manner loosening soil, pest control, buds, fertilization and other work. The second step. The next spring stubble, the species will be expanded cuttings afforestation or sales. third step. In the third spring, the big whip stick seedling with the canopy will be spaced by the plant