In the greenhouse, temperature management plays a crucial role in ensuring optimal growing conditions. Generally, the eastern part of the shed tends to be warmer than the western part during 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 process: close the eastern side first, then the western, and finally the middle. Always consider weather changes and wind direction when adjusting ventilation. If there is wind, open the leeward side first before the windward one. The vents should be opened gradually to avoid sudden temperature drops. The amount of ventilation should be adjusted based on the specific needs of the crops and the current weather conditions. During colder periods, it’s advisable to delay ventilation and close the vents earlier. Ideally, maintain a minimum temperature of 20°C for at least 8 hours per day. In cases of extreme cold, take additional heating measures at night. Once the outside temperature rises to 15°C, it's safe to ventilate overnight.
Humidity control is another essential factor in greenhouse management. Due to the non-airtight nature of the plastic film, temperature differences between the inside and outside can cause condensation on the film, which reduces light penetration and negatively affects plant growth. Therefore, humidity should be managed primarily through dehumidification techniques such as proper ventilation. Aim to keep the relative humidity within the range of 60% to 80%. After heavy rain or irrigation, increase ventilation to reduce moisture levels effectively.
The enclosed space of the greenhouse can lead to the accumulation of harmful gases from activities like fertilization and pesticide application, which can lower carbon dioxide levels and hinder vegetable growth. Before each daily ventilation session, it's important to first create a small gap in the center of the greenhouse to release stale air and toxins, allowing fresh air to circulate. Continuously monitor the carbon dioxide levels inside. If the concentration drops below optimal levels, use supplementary COâ‚‚ sources to replenish it as needed.
Light is a key driver for the growth and development of greenhouse crops. To maximize light exposure, regularly clean the greenhouse film to remove dirt and debris that may block sunlight. If natural light is insufficient in terms of intensity, quality, or duration, consider using artificial lighting such as incandescent or LED lamps to supplement the light supply. This helps ensure plants receive adequate illumination for healthy growth.
Frozen Mussels,Frozen Cooked Clean Mussel Meat,Cooked Mussel Meat,Seafood Mussel Meat
Shengsi Xiangyuan Aquatic Products Co.,Ltd., , https://www.mytilus-edulis.com