Techniques for rooting cuttings of Acacia auriculiformis.

The effects of rooting substrates,types and concentrations of auxins and treatment time on the rooting and growth ability of Acacia auriculiformis cuttings were systematically studied,and the changes in rooting ability and growth performance of cuttings during rooting were analysed.And the general rooting effect of different treatments was evaluated based on the analysis of the subordinate function values.The results indicated that the mean number of roots and the length of the longest roots produced by cuttings treated with IBA were significantly higher than those produced by cuttings treated with NAA and ABT-1# rooting powder.The optimized combination was the cutting treated by IBA 200 mg/L soaked for 2 hours with the substrate of yellow subsoil.The root occurred on the 10th day and the peak period of rooting occurred in the period 15-20 d for the rooting cuttings in October.