After the vegetables are harvested, the water supply from the root system needs to be interrupted, and breathing is a major feature of life activities. Vegetables have different degrees of physiological changes. The suitable vacuum packaging machine used can suppress the effect of breathing, realize water evaporation and nutrient consumption, thereby reducing mechanical trauma, maintaining the original quality of vegetables, and comprehensively increasing its commodity value. In different ways. The vacuum packaging machine can maintain a relatively suitable storage temperature for vegetables. Any vegetable has a suitable storage temperature. Under the conditions of suitable storage temperature, it reduces breathing, consumes less nutrients, and has less water evaporation, so it can better Stay fresh. If the temperature is too high, the breathing will increase, the heat released by the breathing will increase, the consumption of nutrients will increase, the amount of water evaporation will increase, and the freshness will decrease rapidly. Too low a temperature is very easy to cause chilling damage or freezing damage to very vegetables, which causes physiological changes in vegetables, quality degradation and increased rot.
The annual production and harvest time of vegetables in solar greenhouses varies, and the vacuum packaging machine should choose suitable packaging materials according to the different outside temperatures. This can prevent the vegetables from being heated and cooled, and if necessary, other insulation or cooling measures can be used. After the cold winter, the temperature is often very low. In this case, the transportation is started without a vacuum packaging machine. Vegetables such as cucumbers are easily frozen, and they are packed in a corrugated box or foam plastic box vacuum packaging machine. It's better to add some mulch outside to prevent the cucumber from freezing.