杨树是世界中纬度地区栽培面积最大、木材产量最高的速生用材树种之一,具有生长快、成材早、产量高、用途广、易于更新的特点,是最适合短轮伐期工业用材经营的树种。我国从上世纪70年代初引入的黑杨派无性系,经过区域化栽培试验,证明其适生范围很广,特别在长江中下游平原栽植, Poplar is one of the fast-growing timber species with the largest cultivated area and the highest lumber output in the mid-latitude regions in the world. It has the characteristics of fast growth, early harvest, high yield, wide use and easy renewal. It is most suitable for the management of short-rotation industrial timber species. China introduced from the early 70s of last century black clonal clones, after a regional cultivation test, proved its wide range of fitness, especially in the middle and lower reaches of the Yangtze River plain planting,