Research On Light Environmental Mechanism And Controls Of Clivia

Clivia is a genus of monocot flowering plants native to southern Africa. They are from the family Amaryllidaceous. Common names include Kaffir lily and bush lily. They are herbaceous evergreen plants, with dark green, strap-like leaves. Flowers are bell-shaped flowers on a stalk above the foliage, and they are borne in whites through yellow to red colors Of the six known species, Clivia miniata is the most widely cultivated, and hybrid varieties with flowers ranging from deep red-orange to pale yellow have been bred by growers.In 1984, the clivia was named City flower of Changchun. Now there are more than three-hundreds thousand square meters of clivia glasshouse in this city, is One of three of national total area , it can produce 300,000,000 stubs every year, more than 5000 doors, the employee are more than 50,000 peoples. Be becoming one of the ten pillar industries in Changchun City. As merchandise of ornamental, the clivia's price is decided by its appearance and characteristic, which are closely-related with the cultivation light environment. Light quality is important parameter of light environment. Researching control mechanism of clivia light environment, it is first how light quality to work.The light source generally used for in vitro culture is fluorescent lamps. Metal halide, high-pressure sodium and incandescent lamps are also applied to increase PPF level. However, these sources contain unnecessary wavelengths that are of low quality for promoting growth. Compared with those traditional lamps, the improved features of the light-emitting diode (LED) include smaller mass and volume, a longer life, and a single wavelength.The concrete research contents are as follows:1, Various mere qualities act on the impact on Clivia nobilis alone in visible light range;2, Normal greenhouse adopt, compound all quality mend all impact on Clivia nobilis under the terms;3, Adopt and cover the membrane to regulate naturally merely, the impact on Clivia nobilis;4, Naturally mere artificial light source development of simulation So LEDs are used in this research and research result as follows:1) With increase of wavelength, whom chlorophyll formate the more unsatisfactory result, present the yellow phenomenon of taking;2) The blade under violet-blue LED is short and thick; Do not extend, have the tendency to downgrade; Have good facilitation to rigidity and hardness which improve the Clivia nobilis blade;3) The Clivia nobilis, to only having tropism that moves violet-bluly; 4) Red yellow LED has facilitation in improving the line quality of pulse;5) In summer it can improve the whole quality of the Clivia nobilis to cover the purple membrane of basket;6) The ones that adopted many kinds of LED when can imitate the natural light can see spectral distribution.These are only preliminary exploration, have only carried on qualitative research, and then need quantitative research deeply and carefully, in order to define the mechanism of the mere environment of culture of Clivia nobilis, realize the complete regulation and control of all environment, especially adjust and control in florescence, on the basis of confirming environmental condition that buds are formed, utilize accurate technology of mere environmental regulation and control, change the florescence naturally of Clivia nobilis, flower frequently of opening.