How to increase the greenhouse lighting rate

Light conditions in the greenhouse directly affect the growth, yield, and quality of the vegetables. Especially in rainy weather, the light is weak. The lack of light in greenhouse vegetables is a common problem. Insufficient illumination not only fails to produce more vigorous photosynthesis, but also reduces transpiration, and plants grow weakly, which affects the yield and quality of vegetables. Therefore, it is necessary to take some effective measures to improve the lighting conditions in the greenhouse and to produce vegetables in greenhouses.

Reasonable layout. When planting different types of vegetables in greenhouses, the principle of “lower height from the north to the south” should be followed, so that the plants can be staggered and arranged in an orderly manner, minimizing mutual obstruction. Transplanting the same kind of vegetables, trying to make the seedlings the same size, so that the plants grow neatly and reduce shading between the plants. At the same time, it is better to do planting in the north and south to make it as sunny as possible.

Keep the shed membrane clean. Water droplets, dust, and other debris on the film will reduce the light transmittance by about 30%. After the new film is used for 2 days, 10 days and 15 days, the lighting in the shed will be reduced by 14%, 25%, and 28% in turn. Therefore, it is necessary to regularly clean, wash the dust, dirt and water droplets on the surface of the house, and keep the surface of the film clean to increase the transparency of the film.

Reasonably uncover the straw. Under the premise of doing a good job of heat preservation, appropriate removal of the straw curtain used for heat preservation and delayed cover curtains can extend the lighting time and increase the amount of lighting. Generally, the curtain is uncovered 0.5-1 hours after the sun comes out, and the curtain is covered half an hour before the sun goes down. Especially in the rainy days when it rains, it is necessary to properly uncover the sun's scattered light.

Use drop-free film. The drip-free film incorporates several kinds of active agents in the formulation, so that the affinity between the water molecules and the film is greatly reduced, and the water droplets flow along the film surface into the ground without any water droplets. The use of a drip-free membrane shed can increase the light intensity in the shed and increase the temperature of the shed.

Set the light curtain. With a 2-meter-wide, 3 meter-long aluminized film reflector, hanging on the north side of the greenhouse to make it perpendicular to the ground, it can add 40% light to the ground and increase the temperature of the shed by 3°C-4°C. In addition, laying silver-gray film on the ground can also increase the light intensity between plants.

Do a good job of planting. Timely pruning, snoring, tying up vines, playing old leaves and other field management are conducive to ventilation and light conditions in the shed.

Sunshine is a necessary condition for green plants to carry out photosynthesis. In the season when the number of light hours is small and the intensity is low, sunlight is collected in greenhouses, which plays an important role in increasing the yield and quality of vegetables.

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