Increase greenhouse lighting

1. Properly collocation Planting different varieties of vegetables in plastic greenhouses should be based on the principle of "lower north and higher south". When planting, the seeds are in one direction. When transplanting, the cotyledons are arranged in parallel, and the specifications must be strictly cultivated so that the plants grow neatly and the shading between the plants is minimized. If the greenhouse area is large and the conditions are good, it is best to get high and low vegetables in the room, intermixed, interplanted.

2. Buy Dripping Film At present, the plastic films sold on the market are mostly ordinary films. Due to the high humidity in the shed, many water droplets adhere to the shed film, affecting the permeability of sunlight, so the use of non-drip films is recommended. Button shed.

3. Keeping the shed film clean The dust and dirt on the outside wall of the shed must be cleaned and scrubbed frequently. The snow on the shed must be cleaned in time for snow days to increase the transparent film of the plastic.

4. Double insulation In plastic sheds covered with plastic film or arch sheds, according to tests, covering the plastic film in the greenhouse can increase the ground temperature by 2°C; setting a small arch shed can keep the temperature of the small arch shed above 10°C. Ensure the normal growth and development of vegetables in winter.

5. Set cold-proof ditch can cover firewood around the plastic shed, and dig around the cold ditch. The width of the ditch is about 30 cm and the depth is about 50 cm. The ditch is filled with straw, rice husks and other materials. This is divided with cold air to increase the temperature inside the shed. Horses and manures, organic fertilizers, and other brewing materials in the sheds have significant effects on increasing soil temperature and near-surface air temperature.

6. To uncover the cold-proof materials in a timely manner The sunny morning in the sunny day when the sun shines on the greenhouse begins to expose the cold, and the cloudy snow will be released in the evening. At the same time, it is necessary to try to tighten the cold-proof materials as much as possible so that the lighting surface in the shed can be expanded and the temperature in the room can be increased.

7. Conditional vegetable farmers can use supplementary lighting in cloudy or snowy weather. In the case of insufficient light intensity and time, artificial lights such as electric lights, gas lamps, or biogas can be used to supplement the light and improve the photosynthetic efficiency of vegetables.

8. The air barrier outside the shed shall be on the windward side of the facilities outside the shed. The 1-2 wind barriers shall be clamped with straw, which can play an effective role in heat preservation.