Summer Light补给
Summer overcast weather has a significant impact on plants, making supplemental lighting essential. If it's sunny, with longer daylight hours, there's no need for additional lighting.
2. Winter daylight supplementing method when it's sunny during the day:
To retain heat during winter, greenhouses typically uncover the straw mulch at 9 a.m. and then re-cover it around 3:30 p.m., resulting in only about seven hours of sunlight exposure throughout the day. This is far from sufficient, so additional lighting should be provided to meet the plants' light requirements on top of the natural sunlight.
3. On overcast days, even when it's quite bright, supplementary lighting is needed.
Weak light filtering through the clouds is far from sufficient for the photosynthesis of plants. Therefore, supplemental lighting is necessary in overcast, foggy, rainy, or snowy weather.
4. Using energy-saving plant growth lamps for supplementary lighting yields significant results.
The brightness we perceive as animals has little effect on plant growth. Although it's not noticeable to us, it's the light plants need to attract, making the effect quite evident.
5. Using regular light bulbs as plant supplemental lighting is unscientific.
Incandescent bulbs are effective for lighting plants, but the effect is minimal as they emit very little useful light.
