我国北方广大平原地区是杨树栽培的适生区,杨树栽培面积占平原绿化面积的80%以上。自上个世纪90年代以来,我国林业科研人员研究选育和引进一大批杨树新品种,在广大平原地区迅速得到了广泛推广应用,目前杨树栽培的比例、面积和株数均为历史之最,创历史新高,发挥了巨大的经济效益、生态效益和社会效益。 The broad plains in the north of our country are suitable areas for poplar cultivation. Poplar cultivated area accounts for more than 80% of the plain green area. Since the 90s of last century, forestry researchers in our country studied and breed and introduced a large number of new poplar varieties, and have been widely popularized and popularized rapidly in the vast plain areas. At present, the proportion, area and number of poplar cultivation are the highest in history, A record high, has played a huge economic, ecological and social benefits.