Abstract: The investigation on the growth pattern and nutrient characteristics of Populus deltoides cv. "LUX" I-69 was initiated in 1982 in Han-shou County, Hunan Province. The results in the first three years (1982~1984) indicated that the local climate and soil was suitable for the growth of P. deltoides cv. "LUX" I-69. But there was significant difference in the growth of diameter breast-height (D.B.H.) among different years and different months. The growth of D.B.H. was slow in the first year with a peak in August. But the growth peak in the second year and third year was in June. The average growth in D.B.H. was 5.04cm annually. The contents of the major nutrient elements in the plants varied significantly with different months except Mg2+, but had no significant variation among different years. The variation pattern of nutrient contents within a year was similar to the D.B.H. growth pattern. The following are the annual average contents of some major nutrients: N:3.25%~3.31%, P2O5: 0.58%~0.59%, K2O:1.59%~1.61%, CaO: 3.17%~3.28%, MgO:0.54%~0.70%. This showed that the plants had a high nutrient level and a good condition including the soil nutrients supply, absorption and utilization existed in the tested plantations for the tree's growth.