The unique advantage of the blackout system is that it reflects sunlight instead of absorbing sunlight, effectively reducing the illuminance in the greenhouse, and at the same time reducing the temperature of the crop and the air. In the hot summer, blackout system can block most part of the sunlight and diffuse the sunlight into the room, evenly illuminating the crops, protect crops from strong light burns, and reduce greenhouse temperature by 4-6 °C. By using different curtains, different shade ratios can be formed to meet the needs of different crops for sunlight. In the winter nights, internal shading insulation system can be effective prevent infrared escaping, reduce radiant heat loss on the ground, reduce heating energy consumption, and greatly reduce greenhouse operating costs.

Performance and advantages of blackout system

1) Light deprivation: It consists of two layers of materials for sensitive plants that require photoperiod regulation. Shading the plants such as chrysanthemum and cannabis is very effective, and its light transmittance is <0.1%.

2) Light supplement: In the artificial light supplement system greenhouse, the white lower surface has a reflectivity of 60%, which can increase the light absorbed by the crop by 3 to 5%.

3) Heat preservation: The aluminum foil on the upper surface or the white surface reflects sunlight, which prevents unnecessary light from collecting and retains heat at night.