How effective is the plant fill light lamp?

The wavelength band of plant supplementary light can promote plant growth is basically biased towards red and blue. Therefore, it is necessary to choose LED plant growth lamps with red and blue bulbs to fill the light. The ratio of red to blue is 7: 1, 7:2 and 7:3. There are detailed studies abroad, and there are some differences in the demand for each kind of meat, but the approximate proportion is similar. This can be avoided.

Matters needing attention of plant fill light lamp

The distance between the plant growth lamp and the plant is 2.5m-3.5m, the minimum height of 90W plant growth lamp is 1.5m, the minimum height of 300W plant growth lamp is 2m, and the minimum height of 600W plant growth lamp is 3-4m.

For 24W, the plant needs to be 50cm away from the plant, with or without sunshine, which cannot exceed 12 hours. Turning on the plant growth lights at night is easy to attract insects and small animals, so it is best to close the door of the greenhouse.