"Spring and autumn and autumn" is for human health, but for vegetables, you should also pay attention to "Spring." Because the early spring season is warm and cold, the temperature changes greatly. At this time, if it is not properly managed, it will easily cause large fluctuations in the temperature inside the greenhouse, which is not conducive to the normal growth of shed vegetables. The use of heat sources such as heaters and warm air to increase the temperature, although the temperature inside the shed can be adjusted, but the cost is too high. Therefore, the "Spring Festival" at this time is very important. The so-called "spring æ‚" for shed vegetables, that is, although the outside temperature has risen after the spring, but it is still unstable, do not rush to uncover the film and carry out a lot of ventilation, gradually reduce the temperature difference between the shed and the outside, so that the vegetables can Faster and better adapt to the external environment after film release. The specific method is: after the temperature rises, depending on the weather changes, the temperature difference between day and night, gradually uncover the film at both ends of the shed and the surrounding area at noon in the sunny weather, and gradually increase the ventilation until the film is finally removed. In the implementation of "Spring", it is necessary to pay attention to the timely ventilation, film uncovering and film removal should be carried out step by step to prevent the temperature inside the shed is too high and lead to "burning seedlings". Practice has proved that the proper use of the "Spring Clam" shed vegetables can avoid the "sparkling seedling" caused by the film being uncovered all at once, and the growth is relatively stable, which can improve the anti-freezing and disease resistance of vegetables. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone
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