Larix olgensis is a major reforestation species in areas of the northeast part of China. Rooted cutting for vegetativepropagation on this Larch has been carried out since 1990 and later the bulk method of hardwood cutting propagation alsohas bcen studied. The result is as follows: (1) Cuttings from physiologically juvenile trees are easy to root. and develop bet-ter roots. In addition. there are many methods to enhance the cuttings rooting. (2) The good time. for seedling transplantingis in the middle of August. ’Treatments with plant hormones and rare-earth compounds can improve the seedling survivalrate. and the survival rate of the seedlings soaked in chelate rare-earth molybdenum compound (300×10-6) for 3 hoursreached 94.00% 19.49% higher than that of the control. (3) Methods of maintaining juvenility such as hedging. is essentialto further developments for operational planting of vegetative propagates. Hedges in 5 years old can prodace 91 .75 shootsper tree- cxceeding the control to 1 52.2%..
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