Studies On Industrial Production Techniques Of High-Quality Cultivars Of Cymbidium

In the paper, through studying several key cultivation techniques, and investigating the popular varieties of Cymbidium cultivars and cultivation management technology in the production of Cymbidium, the species selection and cultivation techniques were studied in the process of industrial production of Cymbidium, in order to improve cultivation level and the quality of Cymbidium, ultimately improve the economic efficiency. The results can be summaried as follows:1. The quality evaluation standard and model of Cymbidium were established in the research, and 30 popular Cymbidium cultivars were evaluated using AHP method, from the aspects of quality traits, quantitative traits and ecological characteristics.Then according to the distribution of the comprehensive evaluation value and intuitive experience, the cultivars were divided into five grade, and the results showed that 23 cultivars have had better quality, were suitable in production and sales promotion.2. Through analyzing and summaring production technology of Cymbidium in Yunnan, from the aspects of site construction, cultivation media and containers, cultivation management technology at different stage, flower control and pest control technology, the mature cultivation technology industry of Cymbidium was formated. Then the questions in commercial culture of Cymbidium as well as the improved counter measures and suggestions of the related problems was put forward.3. With cultivation management pattern that using single-layer nets shade from 11:00 to 15:00, the tempreture was higer and the light was stronger in the environment, and the flower bud formation time was earlier, its quantity was more, its flowering quality was better, but the color was shallow; with the patterns that using single-layer shady nets all day and using double-layer shady nets all day, the differences of tempreture and light in envoriment between its was not significant, the growth performance and flowering of Cymbidium was ordinary, but the coler was darker.4. Four different fertilizer application on annual Cymbidium plant, make the impacts on the growth of primary and new shoot, the amount of lateral bud germination, and the root volume of Cymbidium reached a significant level, but leaves'chlorophyll content did not reach significant level. The fertilizer of"Hyponex (600ppm)"and"Scotts (2000ppm)"was most effective for growth of annual Cymbidium, the fertilizer of"potassium dihydrogen phosphate+carbamide(600ppm)"had second effect,a nd the fertilizer of"potassium dihydrogen phosphate"had least effect. 5. In the process of water deficiency, leaf water content gradually decreased, relative permeability of cell membranes and content of MDA gradually increased, activities of protective enzyme increased firstly and then decreased, physiological index above all can be used as appraisal index of water deficiency. And the results showed that the plants suffered serious intimidation from water deficiency 12d～21d.In production, the maximum water interval cannot exceed 12d, with 3～4d advisable, otherwise plant growth would be severely affected.