Orchid cultivation technique Light breeding Orchid

Using electric light source to supplement light artificially is one of the effective measures to improve the cultivation environment of orchids and obtain high yield and high quality orchids. Through experiments, the best condition of artificial supplementary light for the growth of spring orchids was found. Its germination rate is about twice higher than that of natural environmental protection, and the ornamental value of orchid leaves is improved.

1. Design of artificial supplementary light source

The first category is the light source that increases photosynthesis. Four 20-watt fluorescent tubes can be installed at 200 ha above the orchid plant, which can be used before sunrise, after sunset and when the sun is insufficient. The second type is the light source that kills bacteria. Install a 30W UV tube (2537 A) above the orchid bushes and drive for 15 minutes once a week.

2. prolong the time of photosynthesis

Proper increase of light is especially beneficial to the vegetative growth of orchid plants, but the time of light should not be too long. The author's experience is that the daily supplementary lighting time is about 4 hours in spring, 2 hours in summer, 3 hours in autumn, 5 hours in winter, and about 3 hours per day in the whole year. Five hours.

3. The best light intensity of photosynthesis.

Although Cymbidium is a shade-tolerant plant, it also needs a certain light intensity to grow normally, and the best light intensity is 2000 lux. Orchids can not grow normally when the light is too strong and too weak.