What are the cultivation methods and precautions of orchids?

What are the cultivation methods and precautions of potted orchids? Generally, the method of dividing plants is adopted. Plant ash is applied to the wound after plant division to prevent rot, and the flowerpot is filled with humus soil and 20% river sand to facilitate water permeability and ventilation. Planting blue seedlings, watering 1 time in spring and autumn, 2 ~ 7 days, and watering 1 ~ 2 times a day in summer. When flowering, pick the small buds to prepare for the next year. Don't splash water on the leaves when flowering to prevent black spots from affecting the ornamental value. Shade in summer from 9:00- 16, and receive indoors when the temperature is 5 degrees in the first frost festival. The indoor temperature is kept between 5- 12 degrees, and the humidity is kept moist but not moist, dry but not dry. Grain Rain Festival moves orchid pots out of doors. Orchids should be changed once a year. In the growing season, 15% cake fertilizer water or 0. 1% urea water and 0.2% potassium dihydrogen phosphate water should be applied topdressing. Rain and snow water are most suitable for orchids, followed by pond water and river water. Tap water can be used after 2 ~ 3 days.