Orchid Growing Environment Management Methods in the Beihai Area

Light:Orchidsneed sufficient sunlight to grow. For orchid plants receiving sunlight, morning light is the most suitable,Cymbidium sinense、Cymbidium kanranshould be before 8 a.m.Four SeasonsOrchidandCymbidium goeringiishould be before 9 a.m. Orchid plants are most averse to direct strong light. When the temperature is above 3O degrees, the strongest light can reach 15,000 lux. This easily scorches orchid leaves, causing the orchid plant to wither. Therefore,orchid growingsites should preferably use double-layer movable shade netting to adjust light intensity. The shading standards in winter are:Cymbidium goeringiiseries 3O-40%, summer orchid series 40-5O%,Cymbidium sinense、Cymbidium kanran5O-6O%; in summer, the temperature on balconies and rooftops is very high, so depending on the growing environment, add 1O%-20% on top of the above shading standards. Temperature:Orchidshave a suitable temperature of 10-25 degrees during the day. At night,Four SeasonsOrchid。Cymbidium goeringiiis 5-20 degrees.Cymbidium sinense、Cymbidium kanranis 10-25 degrees. Generally, within the range of 8-33 degrees,orchidscan all grow normally. Below 3 degrees and above 34 degrees, growth is slow or even stops. Humidity: It is best to keep the humidity inside the orchid shed between 7O-85%, and not lower than 50% at minimum. To solve humidity problems, generally place water basins on the ground or use misting to increase humidity. If it exceeds 85%, ventilate to reduce humidity. Rainwater: Clean rainwater is very beneficial to the growth of orchidflowers. The air in the Beihai area is clean, and acid rain (below PH5.6) has never fallen, making it agood place for growing orchids. However, in months of continuous rain, rain protection work must also be done well, because prolonged overly wet potting soil causes root oxygen deprivation and thus death. Wind force: Ventilation isan essential task in orchid growing. An orchid shed with air circulation and gentle wind force is best. In the Beihai area, apart from typhoons, strong southwest winds, and strong north winds, the usual wind speed is mostly around 3 m/s, which has no effect on orchids. The proper measure is to see orchid leaves swaying gently without damaging the leaves. Foggy days: Foggy days in the Beihai area begin from October to April of the following year. In the month with the most foggy days, they sometimes last three or four days, making the humidity in the orchid shed too high. Therefore, attention must be paid to ventilation to reduce humidity. Evaporation: Paying attention to the level of water evaporation is also one of the conditions for growing orchidsflowerswell. In this area, months with evaporation exceeding 170 mm account for more than half, 6 months in a year. Therefore, attention must be paid to moisture retention in the potting soil and the air inside the orchid shed. To grow orchids well, in addition to the above knowledge, there are also growing media, fertilizers, and prevention and control ofpests and diseases, etc., which will be introduced in the management by month below. Beihai Orchid Association