THE PROVENANCE TRIAL OF ACACIA MANGIUM

This paper analyses the growth of 8 provenances of Acacia mangium plantation in 3 years old in two sites,the research result shows the analy sis of variance is significant between the 8 provenances. The best provena nee is No. 13242 which from Queensland whether in height, diameter breast height and volume increment or wind-resistance index. Its height, diameter breast height and volume increment has 154%, 158% and 387% as compared with the poor seed source. The second is No. 13459 which from papua-New Guinea,its height, diameter breast height and volume increment also has 144%, 160% and 370% as compared with the poor one. The provenance No. 13621 from Indonesia shows a poorest performance.Besides, the growth in each provenance has a positive correation with rainfull, humidity and heat. The height, diameter breast height and volume increment of Acacia mangium in the latter half of the year is larger than the first half of the year.