The light intensity needed for the cultivation of Cymbidium

The use of appropriate light intensity is extremely important for the cultivation of Cymbidium. Generally speaking, 50% shading net is used, and 7o% shading net can be used for some shade-loving varieties. According to the ecological conditions of the origin of Cymbidium, some orchids can accept direct sunlight to grow; some orchids grow in the shade of trees, but most orchids are suitable for growing in half-day shade. For example, Wandai orchid, Phalaenopsis, Cartland and Oncidium are suitable for strong sunlight; slipper orchid, pansy orchid and Maocigulan prefer weak light, while Cymbidium can be cultivated in strong light or half-day shade, but it is easy to sunburn in too strong sun, and it is difficult to form flower buds in too weak light. The experimental results show that weak light Cymbidium can meet the requirements of photosynthesis at 10 ~ 20 000 lux intensity and strong light Cymbidium at 30 ~ 50 000 lux intensity. Therefore, as far as the photosynthesis of Cymbidium is concerned, the light intensity of 20 ~ 50 000 lux is the most suitable. In most parts of our country, shading is needed at 50% / 70% in summer, 20% / 50% in spring and autumn, and no shading in winter. (Lin Deqing, Mu Wei)