Winter management of lotus petal orchid

In the Chinese Lanhui family, there is a rare, leafy and flowering variety of spring orchid called lotus petal orchid. Lotus orchid grows in northwest Yunnan Province, where the three rivers flow side by side. Lotus orchid is a kind of spring orchid between Orchid and Huihui. It has 5 flowers in one stroke, and the fragrance is clear and pleasant, which can be called the national color and heavenly fragrance. It has its unique characteristics, such as taller than Cymbidium, more leaves, elegant and elegant, and more hardy than Cymbidium, because it grows in alpine valleys at an altitude of 1600Mel 2800m. On the other hand, it has high ornamental and economic value. After recent years of development, lotus petal orchids have found many good orchids with high artistic quality, and some of them are rare and excellent flowers in the world. It is admired by the world, pursued and loved by Yilan and Ailan people, and planted as a rare treasure. To this end, with my 30 years of experience in raising lotus orchids, especially the winter breeding experience, introduced to the majority of Ailan people, reference to play a valuable role. First, the most suitable temperature for lotus petal orchid, we know that lotus petal orchid grows in the mountains of northwest Yunnan and the three parallel rivers, 1600 meters above sea level and 2800 meters above sea level. Most of these high elevations are covered with snow after winter, and the climate is naturally very cold, with the lowest temperature around 0 ℃-10 ℃. As a result, lotus petal orchid has the characteristics of cold tolerance, leafy and flowering plants, which is caused by the natural environment. With the change of seasons, the climate of spring, summer, autumn and winter begins to pick up from spring, from-10 ℃ to 25 ℃, and from 10 ℃ to 15 ℃ in autumn. The most suitable temperature for lotus petal orchid is 13 ℃ 25 ℃. It grows well at this temperature, grows slowly below 13 ℃, stops growing below 7 ℃, enters hibernation and forms flower buds, which is the most suitable temperature for vernalization. Second, the lotus petal orchid should hide and grow orchids in winter. We all know that winter hides autumn dew. These are all the results of orchid farmers' indulgence to orchids. Especially in modern orchid cultivation, in order to make orchids grow more frequently, different types of thermal and humid orchid chambers and orchid grids are built, and some modern constant temperature orchid sheds are built to form a systematic and serialized orchid, which keeps the orchid at a temperature and humidity of about 25 ℃ within 70%, sprouting every 12 months of the year to meet the market demand. The majority of people who love orchids buy orchids cultivated in greenhouses, without that condition, they will grow slowly, or even stop growing, and will not sprout and grow until half a year or a year later, which is suitable for the environment. So it is better to grow orchids naturally. When it is cold in winter, the orchids will grow well and have thick leaves. Northern winter to enter the greenhouse, the temperature is maintained at 5 Mel 10 ℃, fully vernalization of orchids, this can promote flower bud formation, smooth flowering. Third, the watering of orchids in winter is observed from nature. When we enter Yunnan, the rainfall decreases, the air moisture decreases, and the humidity decreases. According to this characteristic, the moisture of orchids should be correspondingly lower, and the indoor humidity is about 50%, but the moisture of each pot of orchids is kept moist but not dry. As the saying goes, "watering for ten years". In winter, the orchid should be watered once every 3 days. When the water moss is dry, the water moss should be sprayed, and the water moss is completely drenched, which can promote the false bulb to produce leaf buds early. 4. Orchids can also be divided into pots and plants in winter. Generally speaking, orchids can be divided into pots and plants twice a year. In recent years, our county has eliminated the practice of dividing pots once a year. Now it is common to divide orchids twice a year. The first time is from the Beginning of Spring to Qingming Festival after the Spring Festival. The second time is from September to early November. Why? The advantage of the first split is that spring has come, everything has awakened, the orchid plant is easy to survive, sprout, and the root rate is high; the second split is that the weather cools down, the leaf bud spits out, it is easy to survive, and the temperature is close to the temperature of spring, so it is autumn, so autumn buds are waiting to be produced. I talked about the reasons for dividing plants twice a year, and now I put special emphasis on the advantages of dividing plants in winter. The temperature is relatively low in winter, and the orchid plant is basically in hibernation (except for orchid cultivation in the greenhouse). After dividing the plant, there is no need to change the soil and basin next spring to ensure that the orchid plant can take root and sprout smoothly. Fifth, the prevention and control of orchid diseases and insect pests in winter, relatively less diseases and insect pests, but can not be relaxed, need to be prevented, especially the orchids entering the room will get some diseases and insect pests due to poor ventilation. For example, powdery mildew, black fungus, anthrax, neck rot, rust, etc., need to be sprayed with concentrated solution of streptomycin, penicillin, chlorothalonil, methyl thiophanate, and 2/1000 once a month, which can effectively prevent diseases, especially against bacteria caused by fungi and bacteria. Insect pests include snails, scale insects, caterpillars, etc., which can be used to control insect pests, such as quick-killing scale, mites, methamidophos, methamidophos. In short, orchids should be collected well in winter, keep moderate sunshine, moderate ventilation, moderate moisture, disease and insect prevention medicine spray, orchids will grow very well.