Effect of ventilation in Orchid shed on the growth of Orchid

Air circulation can improve the temperature of orchid growth environment and help to maintain the optimal growth humidity. Air circulation can timely supplement the carbon dioxide consumed by photosynthesis in the orchid growing environment, and keep its content stable, so as to improve the photosynthetic efficiency. Air circulation can effectively reduce the relative humidity around the orchid shed and orchid nursery. Appropriate humidity is very important for the growth of orchids, and the regulation of relative humidity is the key to the problem. The breeding of powdery mildew, black spot, anthrax, aphids and shell insects are all related to humidity. Therefore, if the relative humidity is well controlled, the occurrence of diseases and insect pests can be effectively suppressed. In spring, the humidity in orchid shed and orchid nursery is too high, but the temperature is not high, so there is no need to worry too much, as long as we do a good job of ventilation and drainage. In summer, due to the scorching sun, the temperature is too high in the orchid shed and orchid nursery. Therefore, ventilation alone is not enough, high-pressure spray cooling method should also be adopted, if ventilation and high-pressure spray are combined to cool and moisturize, the effect is better. The suitable relative humidity for orchid growth is between 70% and 80%. When the dusk temperature drops, the relative humidity will increase. At this point, stop the spray and let the water droplets on the surface of the orchid leaves evaporate to prevent the leaves from being moist for 8 hours. Of course, the balcony, ceiling orchid case is more special, spray can be carried out at dusk or even 7: 00 p.m. to 8: 00 p.m. In autumn, the temperature of orchid shed and orchid nursery will rise sharply because of air-drying. At this point, the orchid needs to be sprayed or watered with the right amount of water to maintain relative humidity, but it must be ventilated. In winter, when the sun goes down, the temperature of the orchid shed and orchid garden will drop obviously, and the relative humidity will increase rapidly. At this time, the window or shade net on the side of the orchid shed should be opened and ventilated before the temperature drops appear on the orchid leaves, so as to keep the relative humidity of the orchid shed and orchid nursery, and not let the temperature drop too much, so as not to affect the growth of orchids.