(1) Lighting.
Light affects the growth rate, plant shape, flower shape and color of the plant. Strong light will cause the plant to grow too fast. Usually the leaves grow shorter, the plant grows closer, the flowers are larger, but the color fades later. Got faster. Usually bromeliads are considered to be able to grow in dark environmental conditions and cannot grow in direct sunlight. If exposed to direct sunlight, the leaves will be scorched. Under normal circumstances, there are some differences between different varieties of the same genus, but these data can still be used as general planting principles. Many production sites use relatively fixed facilities for planting, such as sunshade nets, etc., that is, to block the sun when the sun is relatively strong, and also to block the sun in the morning, evening and cloudy weather. It is recommended to use movable A shading system to give plants optimal light.
(2) Temperature.
The growth temperature of most bromeliad plants is between 20 and 30°C, and the plants can grow normally within this range. We believe that the most suitable temperature for plant growth is 25°C. Whether this condition can be achieved is usually limited by economic and environmental conditions. When the temperature drops below 20°C, the plants will bloom naturally, especially when the temperature drops below 15°C, it is very dangerous. When the temperature is only a little lower than 20℃ and remains stable, it usually results in slow plant growth. If the temperature drops below 10℃, the plants will suffer from freezing damage. It is recommended that the temperature should not exceed 30°C. When the temperature exceeds 35°C, plants may be significantly damaged. Under high temperature conditions, plants will grow slowly and have difficulty flowering.
(3) Ventilation and humidity.
The relative humidity of the air that is most suitable for the growth of pineapples is 50 to 75. Generally speaking, ventilation should be strengthened during periods of high temperature and high humidity (relative humidity ≥ 80), and more water should be sprayed when the temperature is high and dry (relative humidity ≤ 40); water should not be sprayed when the temperature is low in winter, but people should spray water when they feel stuffy. Turn on the fan to increase air circulation. Poor ventilation will affect the normal growth of plants, making them prone to leggy growth and disease. When the air is dry, the relative humidity is below 40, or there is excessive ventilation, it is not suitable for the growth of pineapple plants, and it is easy to cause the leaf tips to wither. At this time, water should be sprayed once an hour for 1 minute each time. Ventilation should be strengthened during the period of high humidity and high temperature in summer. It is not advisable to spray more water during the period of low temperature in winter. During the period of high temperature and dryness in spring, more water should be sprayed. To improve ventilation conditions, single-slope ventilation is the most economical and effective method, and it would be even better if combined with a movable sunshade net. Under good ventilation conditions, pineapple leaves are wide and plump, flower spikes are large and long, and the flowers are bright and beautiful.