A Study on Vegetation Propagation Tests of Picea mariana By Softwood Cutting

Vegetation propagation test of Picea mariana Britt by softwood cutting were studied by using full-sun-shine and auto-spray system.The results from 3-year research showed that,among different rooting agents,the soaking cuttings with 200/kg ABT for about 30～50 min could get the best result under the climate of east Liaoning province,with the rooting rate of 78.3% and well developed roots;The rooting rate of softwood cuttings(49%)was higher than that of softwood cutting with some hardwood. The diversity of rooting rate between two kind of cutting was marked. The cutting medium of sand increased 11.2% of rooting rate in comparison with that of sawdust, After vegetation propagation by softwood cutting, the callus tissue has appeared after 25 days and heave like root appeared after 40 days.The real root appeared after 50 days, The seedlings were transferred in late autumn and buried with sand for living through the winter.The survial rate of transplanting seedlings can reach 92.5% in the second year, which shoot growth can reach 6.6cm.