Study on Stroma Filtra tion and Cultiva tion Techn iquesScreen ing of D endrobium devon ianum

Dendrobium devon ianum Paxt. is one kind of important Chinese traditionalmedicine at low latitude areassuch as Yunnan p rovince. There are some difficulty in its artifial cultivation, including regeneration failure, low survival rate, slowly growth, low p roduction. Though the cultivation experiments on this p lant spocies, the resultsshowed that: 1) Effects of different p lanting stromata on D. devonianum germination were different, the most of germination was in the mixture of tree barks and moss (1∶1) ; the best of branch growth stromata was tree bark; theyield in the mixtrue of tree barks, sawdusts, and sheep dung(5∶3∶2) was the highest; (2) Effect of different cultivation ways on D. devonianum was also different, the best was the way with fixing the p lant straightly. In conclusion, the best technique to p lant D. devonianum was to use tree barks stromata and p lant it straightly.