Abstract: A split plot,randomized complete block design with 4 replications had been used. Six spacing treatments in the main plots,and six levels of fertilizing in the split plots. The area of each plot was 0.04 hm-2(20 m×20 m). There were 144 plots in this trial. The data was collected from the first year to five years after planting. The results of analysis of variance of a two way classification show that spacing affect the growth of mean H,DBH and volume of Eucalyptus urophylla × E. grandis(P 1%). In the 6 spacing treatments,the more of plantings,the smaller of mean H and DBH,but the more of volume. The mean H,DBH and volume of the treatment with 667 tress·hm-2 are 20 m,10.8 cm,167.85 m3·hm-2 respectively;those of 2 222 trees·hm-2 are 17.3 m,16.4 cm,119.48 m3·hm-2 respectively. The results also show that fertilizer affect the growth of mean DBH and volume of E. urophylla × E. grandis(P 1%). The mean H has no significance. In the six fertilizing treatments,the more of total fertilizer,the more of volume. Level one with the most fertilizer has the largest volume,the value reach 158.94 m3·hm-2. Level five with the smallest fertilizer has the smallest volume,the value is only 136.58 m3·hm-2. The distance between the volumes happened at two years old,and was keeping up till 5 years. Spacing × fertilizing has no significance.