Plants, like humans, have long adapted to the rhythm of day and night alternation, working during the day and resting at night. When the intensity of evening light drops below a certain limit, photosynthesis stops and enters dormancy, and this critical value is called the light compensation point. The light compensation point varies among different crops, but if it is lower than the light compensation point, it will not have the effect of supplementing light, which is the requirement for light intensity. Supplement the light time. Normal crops receive about 11-14 hours of light per day, while in northern China, winter only lasts 7-8 hours, so at least 4-5 hours of supplementary light are needed every day. Continuous lack of light leads to suboptimal crop health, with yellow spots appearing on the leaves, withering, and even widespread damage. To produce off-season crops in greenhouses, it is necessary to understand the lighting requirements of various crops, especially fruit crops, which have stricter lighting requirements during the fruiting stage. Generally, if the average sunshine time does not reach 11 hours, all young fruits will fall off. In winter, it is difficult to meet the requirements with natural light, and artificial supplementary lighting should be considered. Taking orchids as an example, the duration of supplementary light can be advanced or delayed throughout the day. If you want to supplement the light, you should supplement the light and avoid the method of continuous flow of fine water. Allow sufficient dark time for orchids to undergo dry matter transformation and synthesis within the plant.

Product advantages:

1. Increase the yield and income of all greenhouse produced crops

2. Enhance the output of blue light in the spectrum, which is beneficial for plant growth

3. Beneficial for the growth of dry plant leaves, flowers, and branches

High pressure agricultural sodium lamps are currently the most widely used light source in greenhouses, and Philips' PAR for high-pressure agricultural sodium lamps is the highest standard in the industry, 220 v 400w 745μmol/s, 220v 600w 1100μmol/s, 380v 600w 1150μmol/s, 380v 1000w 2100μmol/s.