The relative humidity required for orchid growth

In addition to paying attention to sunlight, ventilation, planting materials, and fertilizers, the breeding of orchids requires special attention to humidity. Only pay attention to the temperature of the blue pot planting material is not enough, but also pay attention to the relative humidity of the air in the shed and the orchid garden. The degree of humidity in the sheds and orchids has different effects on the growth of orchids. The humidity control is good, the orchid germination rate is high, and the leaves have fewer black spots and flowering; however, the orchids have low germination rates, and the leaves have dark spots and leaves. Sharp yellow, less flowering or no flowering. After the author's practice of humidifying the sheds and orchids, it is believed that the relative humidity of the air in the sheds and nurseries reaches 60% to 80%. The orchids grow better. The two methods for improving the humidity of the greenhouses and gardens are as follows: 1. The humidity of the open sheds or nurseries should be humidified inside and outside, and if the summer temperatures exceed 30°C or when the winter is dry, the humidity of the sheds or nurseries on the open balconies Often less than 60%. Therefore, in addition to the moisture content of the planting material in orchids, 70%-90% of the maximum moisture content of the planting material should be controlled in accordance with local conditions. Artificial humidification and other methods should be used, such as frequent spraying inside and outside the sheds or orchid gardens to increase air humidity and achieve heatstroke protection. Cooling and increasing the humidity of the shed or nursery are suitable for the growth of orchids. Second, semi-enclosed Lan Peng or Lan Pu to be humidified on the ground or balcony erected Lan Peng, Lan Pu, roof and surrounding use shading nets or bamboo or transparent glass, but in a suitable location to leave the ventilation window. Blue sheds, orchids installed exhaust fans, water atomizing nozzles, thermometers and hygrometers. When the temperature is high or dry, the water atomizing nozzle can be turned on and sprayed on the ground and surrounding areas of the orchid plant, shed or nursery. After 5 minutes, the temperature in the greenhouse or garden can be reduced and the humidity can be increased. If the air humidity meets the requirements, the ventilation window can be opened to allow natural ventilation in the shed or garden. When the temperature and humidity in the shed or nursery are similar, a small amount of water may be sprayed to increase the relative humidity. In general, semi-enclosed sheds or orchids are suitable for humidity control within 80%.

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