How to Scientifically Supplement Light for Greenhouse Vegetables? A Guide to Practical Methods

Temperature and light are the requirements for crop growth, and when growing greenhouse vegetables in winter, insufficient light often occurs, which greatly affects the quality of the vegetables. So how should light be supplemented for greenhouse vegetables in winter? Let's take a look together.

1. Mechanical roll-up curtains

In winter, mechanical roll-up curtains can be used. This not only saves a lot of manpower and reduces labor, but also is faster than manually uncovering and covering straw curtains, saving a lot of time and more effectively extending the lighting duration of the 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 inside 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 the vegetables to receive more light. However, if there is dust or dirt on the greenhouse 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 clear the accumulated snow, keeping the film surface clean and maintaining the film's light transmittance as high as possible, so as to increase the lighting duration of the vegetables.

4. Cover the ground with plastic film

Plastic film can be used to cover the vegetables in the greenhouse. This not only raises the ground temperature and reduces the humidity inside the greenhouse, but the plastic 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 curtains

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

6. Artificial light supplementation

During continuous cloudy days and rainy or snowy weather, natural light is obviously insufficient at this time, so artificial light supplementation 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, promptly removing dead branches and old leaves, can not only save nutrient consumption, but also improve the light conditions of the vegetables in the greenhouse and has a noticeable 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 stay tuned to us.