1. The optimal light intensity for lettuce is 200-400 μmol/m²/s. Light intensity within this range can promote healthy growth of lettuce and avoid excessive growth.
2. Lettuce has a relatively balanced demand for blue light and red light. Blue light (400-500nm) helps leaf growth and photosynthesis, while red light (600-700nm) promotes overall health and growth.
3. Lettuce generally requires 12-14 hours of light per day, and a timer is used to control the light cycle to maintain a regular circadian rhythm.
In summary, appropriate light intensity, spectrum, and light duration are the keys to ensuring the healthy growth of lettuce. Using appropriate LED plant lights to simulate natural light can help increase the growth rate and yield of lettuce.
