How to Supplement Light for Greenhouse Vegetables? An Introduction to the Latest Practical Methods

Temperature and light hours are the disease requirements for crop growth, and when growing greenhouse vegetables in winter, the problem of insufficient light often occurs, which greatly affects the quality of the vegetables. So how should supplemental light be provided for greenhouse vegetables in winter? Follow the editor to take a look.

1. Mechanical rolling of curtains

In winter, mechanical rolling of curtains can be used. This not only saves a lot of manpower and reduces labor, but is also faster than manually uncovering and covering straw curtains, saving a lot of time and more effectively extending the light duration for vegetables in the greenhouse.

2. Use light-conversion film

When building a greenhouse, the plastic film can use light-conversion film for covering, which can increase the light intensity in the greenhouse and is extremely beneficial to the growth of vegetables in the greenhouse.

3. Do a good job of keeping the greenhouse film clean

Most greenhouse vegetable films are transparent, which allows vegetables to receive more light, but if there is dust or dirt on the film, it will reduce the light transmittance of the film. Therefore, it is necessary to frequently clean the dust and dirt on the greenhouse film, and on snowy days also clean off the accumulated snow, keep the film surface clean, and maintain the light transmittance of the greenhouse film as high as possible, so as to increase the light duration for vegetables.

4. Cover the ground with plastic film

The vegetables in the greenhouse can be covered with plastic film. This not only raises the ground temperature and reduces the humidity in the greenhouse, but the film can also reflect light, further increasing the light intensity at the base of the vegetables and making up for the shortcoming of insufficient light in the greenhouse.

5. Hang reflective screens

Somewhat similar to covering the ground, hanging reflective screens on the walls inside the greenhouse can also significantly enhance the light intensity for vegetables near the walls, and the yield of vegetables in that area increases noticeably.

6. Artificial supplemental light

During continuous cloudy days and rainy or snowy weather, natural light is clearly insufficient at this time, so artificial supplemental light is needed. If conditions permit, electric lights can be turned on or biogas lamps lit for supplemental light to help the vegetables get through the difficult period and prevent them from declining and dying due to long-term lack of light.

7. Pruning branches and removing leaves

During the growth of vegetables, timely pruning of branches and removal of leaves, and timely removal of dead branches and old leaves, can not only save nutrient consumption, but also improve the light conditions for vegetables in the greenhouse and has a clear effect on increasing vegetable yield.

  The above is an introduction to how to supplement light for greenhouse vegetables. We hope it can help you. If you want to learn more related knowledge, please follow us.