What are the benefits of growing vegetables in greenhouses in high temperature and stuffy greenhouses in summer, and what should be paid attention to?

High temperature stuffy greenhouse is a way of using direct sunlight in vegetable greenhouses to increase the temperature of closed greenhouses to achieve sterilization, insecticide, weed control, and decomposed organic fertilizers. The high-temperature stuffy shed has the advantages of less investment, simple operation, and easy popularization and acceptance. It is a basic management measure in the pollution-free planting of vegetables.

Greenhouses, a type of facility agriculture, are most used in northern planting. In order to achieve the production of fruits and vegetables all year round, greenhouses are used in northern rural areas to adjust the appropriate temperature to adapt to the production of different vegetable varieties. There will also be greenhouse cultivation in the south, but there are relatively few.

The advantages of growing vegetables in greenhouses are obvious, but the disadvantages are also obvious. In the same field in the greenhouse, it is still relatively difficult to continuously produce fruits and vegetables throughout the year. One is that repeated planting is limited, and the other is that repeated farming will cause many diseases and insect pests.

Therefore, it takes about two months every year to close the stuffy shed. Direct sunlight through the bottom of the shed is used to increase the temperature in the shed, and through a period of high temperature, the purpose of disinfection, sterilization, smothering and killing of insects and clearing of the shed is achieved, which is also equivalent to the fallow rotation of the land in the greenhouse.

There are many benefits of a stuffy shed in a greenhouse. What problems should we pay attention to?

Advantages of high temperature stuffy shed

First, the prevention and control of fusarium wilt is effective. The pathogen often thrives in the soil, and when the survival is large, it will cause outbreaks of fusarium wilt. The high temperature and stuffy shed in summer have a strong killing effect on it. Therefore, it is possible to carry out high temperature and stuffy sheds in summer once a year, and fusarium wilt rarely or even does not occur.

Second, pay attention to sealing. If the seal of the greenhouse is not done well, no matter how the sun shines, it will be difficult for the temperature in the greenhouse to rise. If the temperature is not high enough, many pests will not be killed or suffocated. In a well-made greenhouse in Shouguang, the maximum temperature can reach 90 degrees when it is stuffy. This temperature is enough to kill most germs and pests.

Third, increase the shed temperature, and the time of the stuffy shed should be sufficient. The higher the shed temperature, the better the sterilization effect. It is best to choose a stuffy shed from late June to August. At this time, the light is strong and the rainy days are less, so it is most suitable for a high temperature stuffy shed. The selection of the specific date should choose a sunny day for more than 10 consecutive days to ensure sufficient sunlight and higher temperature in the shed.

Fourth, visit regularly. When the shed is stuffy, the temperature inside the shed is very high, and if it is not done well, it will explode and leak, which will affect the effect of the stuffy shed. Therefore, although things cannot be produced when the shed is stuffy, someone must regularly inspect and monitor them, and often check whether there is any abnormality in the temperature and pressure. If any problems are found, they will be solved in time.

Fifth, pay attention to safety when opening the shed. After the stuffy shed is over, it is necessary to open the greenhouse for ventilation and prepare for a new round of farming. Long-term closed exposure, the oxygen inside is very scarce, we must allow enough time for ventilation, so that the air pressure inside and outside the greenhouse is basically balanced, and people can enter and exit freely after sufficient oxygen.