Abstract: Six Italian clones, P. deltoides cv. I-63, I-69, eramerican hybrids I-72, I-214, I-45 and P. nigra cv. blanc garrone introduced into Jiangsu Province in 1972 recorded a rapid growth, with I 03, I-69 and I-72 being the most outstanding. But, according to our experience, different varieties require different growing conditions: P. deltoides I-63, I-69 and P. euramerican I-72 are best-adapted to warmer regions, while the euramerican hybrids I-214, I-45 and P. nigra blanc de garrone are more adapted to the temperate regions to the north of Changjiang River. As Aigeiros poplars require specific soil conditions for fastgrowing, proper site selection is necessary. Normal growth of black poplar is greatly influenced by four main soil conditions: soil physic: al conditions, moisture availability during growing season, nutrient availability and aeration, which are studied in detail in this paper.