Experiment of Cutting Propagation of Euealyyptus. dununii

The result showed that the differences among the effects of different rooting agents,substrates,cutting lignified degrees and cutting time on the cutting rooting rate reached evident,or extremely evident level.The best rooting agent and substrate was the combination treatment of ABT1~# 600 mg.L~(-1)+red subsoil,the rooting rate,rooting shoot quantity and rooting length were (93.6%,)6.3,and 11.3cm;the rooting rate of half lignified shoot collected from the scion-plucking nursery was 93.6%,evidently higher than that of the plus tree lignified shoot. Their rooting rate sequence was as follows:the half lignified shoot collected from the scion-plucking nurserythe plus tree basal shootthe plus tree middle shootthe plus tree upper shoot;the cutting effect was best in the cutting time of Mar.～May,ie.the spring,that came second in Sep.～Nov.,ie.the summer,the rooting rates might reach over 90%,and 85% or so,furthermore,the rooting time was short,only about 20 d.