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1 前言阜新地处辽西,气候干旱,土壤瘠薄,水土流失严重,河套逐年加宽。据统计有20余万亩河滩、荒地可营造杨树速生丰产林。杨树栽培较早,但经营粗放,产量低。农村急需中小径材。阜新市林科所在1980—1986年间,选小钻类、小美类杨,用2—3年生大苗,0.8×0.8×0.8m—1.0×1.0×1.0m大穴、4×4m以上株行距和深栽0.8—1.0m方法栽植,实行集约经营,造林成活率高达98%。幼林生长迅速,与同等条件一般造林相比,生长量提高3—5倍。
1 Introduction Fuxin is located in western Liaoning, arid climate, infertile soil, serious soil erosion, widening year after year. According to statistics there are more than 20 acres of floodplain, wasteland can create poplar fast growing forest. Poplar cultivation earlier, but extensive operation, low output. Rural needs small and medium diameter wood. During the period from 1980 to 1986, the forest families of Fuxin City selected small drills, small-sized poplars, 2-3-year-old seedlings, 0.8 × 0.8 × 0.8m-1.0 × 1.0 × 1.0m large holes, Depth planted 0.8-1.0m method of planting, the implementation of intensive management, afforestation survival rate as high as 98%. Rapid growth of young forests, compared with the same conditions generally afforestation, 3-5 times increase in growth.