二白杨(当地群众又称青白杨、明白杨、大白杨)是我省河西走廊的一个主要乡土树种。为了迅速改变我省自然面貌,适应我省农业大上快变,林业生产蓬勃发展的需要,遵照毛主席“推广优良品种”的指示,一九七三年我们在有关单位协助下,对二白杨进行了初步 Two poplar (local people, also known as Young Poplar, Poplar, Poplar) is the province of Hexi Corridor, a major native tree species. In order to rapidly change the natural appearance of our province and adapt to the rapid change of agriculture in our province and the vigorous development of forestry production, in accordance with the instructions of Chairman Mao’s “promotion of fine varieties”, in 1973, with assistance from the relevant units, A preliminary