A Study On Dendrobium Officinale Stereoscopic Cultivation Method

Dendrobium officinale Kimura et Migo is rare traditional Chinese medicine. The agronomictraits and yield variation of stereoscopic cultivated D. officinale were studied by operating fieldexperiment, and determined the polysaccharides content of D. officinale attached to living tress inwild or stumps in bionic-facility. To make the most of available space of D. officinale cultivationfacility, revealed the yield and functional components variation of stereoscopic cultivated D.Officinale, and revealed the effects of tree species on polysaccharides content of epiphytic D.officinale. and improved quality, yield and efficiency.1. The stem length and blade length of stereoscopic cultivated D. officinale were lower thanthe ground cultivated ones. However, the land utilization were increased2.74times, which meansthe stems, leaves and their total fresh or dry weight of stereoscopic cultivated D. officinale wereall heavier than the ground cultivated ones. There was no significant difference in polysaccharidecontent between stereoscopic cultivation and ground cultivation. But the extractum content andtotal content of polysaccharide and extractum of stereoscopic cultivated D. officinale wassignificantly higher than the ground cultivated ones. In additional, the polysaccharide content andtotal content of polysaccharide and extractum from the top two levels of stereoscopic culturematrix were significantly higher than the ones from the other levels and ground cultivation.2. Steroscopic cultivation can effectively improves the utilization of space and yield, whilethe total content of polysaccharides and extractum were significantly higher than the groundcultivated ones. The significant difference in D. polysaccharides among the plants from differentheight of stereoscopic culture matrix was indicated that light and other environmental factors areclosely related with the accumulation of the active ingredient.3. There were extremely significant differences on polysaccharides content of D. officinaleattached to different tree species, but the differences have no relationship with the form andnutrition of barks. The polysaccharides content of D. officinale mainly affected by the lightintensity of environment, so reasonable illumination favored the accumulation of polysaccharides.4. Various polysaccharides content of D. officinal from different attached trees is due to the difference of light regulation, but not the form and nutrition of barks.