2011年8月11日星期四

Dendrobium breeding techniques


Dendrobium and Cattleya, Phalaenopsis, Man with a blue tie for the four types of tropical ornamental orchid, is the largest genus of orchids. According to their biological characteristics and ecological requirements of the different, it can be divided into deciduous and evergreen Dendrobium Dendrobium two categories.



Dendrobium species are more common now cultivated a close watch flower Dendrobium, Dendrobium flower ball, butterfly Dendrobium, Dendrobium nobile, Dendrobium of spring, the U.S. spent Dendrobium, Dendrobium and other fragrant. Dendrobium flower, flowers beautiful pose, is an important cut flowers, potted varieties.



To keep a good Dendrobium, available from the following aspects:



Shading. Dendrobium often epiphytic at the origin in the tropical rainforest tree trunks or rocks, hi half shade environment. In the spring and summer growing season, can be 60% ​​-70% shade, but in the winter dormant period need more sunlight, generally 20% -30% shade, or shade.



Insulation. Dendrobium hi hot and humid, deciduous Dendrobium winter temperatures at night can be as low as about 10 ℃ or lower, evergreen species is not less than 15 ℃, while keeping a large diurnal temperature (10-15 ℃), temperature difference is too small will seriously affect the growth and flowering Dendrobium.



Proper watering. Dendrobium need plenty of moisture, but avoid too wet, too wet will result in poor plant growth, rot and even death. Deciduous Dendrobium may be appropriate to keep dry in winter, less watering, potting materials, air humidity, but not too low. Evergreen species in winter greenhouse if the temperature is high, the need to maintain adequate moisture.



Often spray. Sunny hot and dry growing season, plants should be kept to around the water, in order to improve the air humidity. Humidity during the rainy season, to stop the spray, and be careful not to let water pots.



Rational fertilization. Dendrobium hi thin manure handling facilities, the growth of applied once every 7-10 days during the maturity of the cake in water, or 0.1% of the root of all foreign elements topdressing fertilizer. Deciduous and evergreen species during the dormant due to cold and forced to sleep type, you should stop fertilizing.

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