In the greenhouse, temperature management is crucial. Typically, the eastern part tends to be warmer than the western part in the afternoon. When ventilating, it's best to start by opening the central vent first, followed by the eastern side, and finally the western side. When closing, reverse the order—close the eastern side first, then the western side, and lastly the middle. Always consider weather changes and wind direction during ventilation. If there's a breeze, open the downwind vent first, then the upwind one. Ventilation should be done gradually, adjusting the amount based on specific needs and conditions. In colder weather, it’s wise to delay ventilation and close the vents earlier. Ideally, maintain a minimum temperature of 20°C for at least 8 hours daily. During severe cold, implement heating measures at night. Once the outside temperature reaches 15°C, it’s safe to ventilate overnight.
Humidity control is equally important. The greenhouse film isn't completely airtight, and temperature differences between inside and outside can cause condensation on the film, which reduces light penetration and affects plant growth. Therefore, focus on dehumidification through proper ventilation. Keep the humidity level between 60% and 80%. After rain or irrigation, increase airflow to reduce moisture effectively.
The limited space in the greenhouse can lead to the accumulation of harmful gases from fertilization and pesticide use, as well as a drop in carbon dioxide levels, which negatively impacts vegetable growth. Before daily ventilation, open a small gap in the center to release stale air and toxins, allowing fresh air to circulate. Continuously monitor COâ‚‚ levels and replenish when necessary to support optimal plant development.
Light is essential for the growth of greenhouse crops. Regularly clean the greenhouse film to improve light transmission. If natural light is insufficient in terms of intensity, quality, or duration, supplement with artificial lighting using incandescent or LED lamps to ensure plants receive adequate illumination for healthy growth.
Half Shell Mussel,Frozen Cooked Half Shell Mussel,Seafood Frozen Half Shell Mussel,Frozen Half Shell Mussel
Shengsi Xiangyuan Aquatic Products Co.,Ltd., , https://www.mytilus-edulis.com