How to increase light in greenhouse vegetables in winter

In the greenhouse vegetable cultivation process in winter, due to insufficient lighting in the shed, not only the potential for increasing the yield of vegetables is difficult to exert, but also greatly affects the quality of vegetables and prolongs the growth period of vegetables. Artificially increasing the light in the greenhouse can increase the yield of vegetables and greatly improve the quality.

There are several techniques you can do to increase daylighting:

1. When planting vegetables of different varieties and heights in a greenhouse, it is necessary to take into account the direction of the sun rays in the northern hemisphere. According to the principle of “North High South Low”, the cotyledons are arranged in parallel during transplanting, and the cultivation specifications are strictly regulated. The plant and row spacing are coordinated to make the plants grow neatly and minimize the shading between the plants.

Second, change the scaffolding method When cultivating cucumbers, kidney beans, etc. in the greenhouse, the waste film can be used as a hanger instead of the scaffold, which can effectively improve the light utilization rate. The method is to fix a wire along the top of the arch, insert a 25 cm long bamboo stick at the root of the cucumber or the bean, and then cut the old film into strips, which are vertically tied to the bamboo sticks and the wire, when the cucumber or the bean is stretched. The vine will be coiled on the old film strip, and then coiled once every 5 to 7 days. In addition, if you need to use the racking treatment, the front row is inclined to the south, the middle row is upright, and the rear row is turned to the north. This can increase the light utilization rate by about 10%.

3. Keep the shed film clean. According to the investigation, a layer of water droplets on the shed film can reduce the light transmittance by 30% to 50%. After the new film is used for 2 days, 10 days, and 15 days, the light in the shed can be sequentially followed by the dust. Weakened by 14%, 25% and 28%. Therefore, the shed should be kept clean. After the straw is exposed in the greenhouse every morning, the soft cloth strip is tied to the wooden pole, and the dust and debris of the plastic film shed are cleaned from top to bottom. More than 30%, but you insist on it. To reduce the water droplets on the shed film, cover the mulch film in the shed; change the irrigation method, use the subglare irrigation method or hose for drip irrigation; use a clean rag to clean the water droplets on the shed film in the morning; immediately release the air and dehumidification after irrigation, etc. Have a good effect. In addition, the snow on the shed film should be removed in time after snowing to increase the transparency and amount of light.

Fourth, timely cover the curtain to properly uncover the curtain, delay the curtain, can extend the greenhouse lighting time. Generally, the curtain is exposed 0.5 to 1 hour after the sun comes out. The curtain time is half an hour before the sun sets, not too late. Cloudy days should also be uncovered to gain the illumination of scattered light. When it snows, it is generally not revealed, and it will be revealed after the weather turns fine.

5. Use the reflective screen to use the 3 m long and 2 m wide aluminized film reflective curtain, hung on the upper end of the plastic shed and the lower side to the ground. This can increase the ground by about 20%, and can increase the temperature and temperature of the shed to a certain extent, which is beneficial to the healthy growth of vegetables and increase the yield and quality. In addition, laying a silver-gray film on the ground can also increase the light intensity between plants.

Safety Grating

Our safety grating create safer working conditions across a variety of industrial environments. Some of the industries that benefit from using our products in the construction of their walkways, ladders, stairs, ramps.

Stair treads metal grating offers a number of advantages. The material provides greater strength, reliability, and flexibility, qualities that make it well-suited for use in critical structures, such as stairs, ducting, roofing, and more.

Our safety grating provides a lightweight but durable surface that reduces the risk of slipping. It is suitable for use in many crane components, including the stairs, walkway, and operating platform.
The material offers durability and slip resistance-even when exposed to harsh road conditions, such as rain, snow, sleet, and dust-qualities that help ensure the safety of workers during loading and unloading operations.
Safety grating is used for many truck body components, including steps, flooring, and work platforms.

Features:
Corrosion resistance, Rust resistance.
Anti-slip resistance, Good air circulation.
Good drainage performance, Easy to install and uninstall.
High strength-to-weight performance,Durable and long lifespan.
--- PRODUCT SPECIFICATIONS---

Safety Grating,Aluminum Safety Grating,Heavy Duty Safety Grating,Galvanized Safety Grating

HEBEI KAYI BUILDING MATERIAL TECHNOLOGY CO.,LTD , https://www.kayigrating.com