Humidity in the greenhouse for planting tomato
- Jianda
- Qingzhou,China
- 10000aqm per 20days
Air humidity has an important impact on the transpiration, photosynthesis and disease occurrence of greenhouse tomato planting, but not the higher the humidity, the better. Generally, air humidity between 50% and 80% is most suitable for the growth and development of vegetables, and when greenhouse for planting tomato, the optimal humidity is 50% to 60%.
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Irrigation is the main factor affecting greenhouse humidity. Drip irrigation in greenhouse for planting tomato, infiltration irrigation or sub-film irrigation can maintain stable humidity and effectively reduce pests and diseases.
1. Drip irrigation can minimize the amount and frequency of irrigation of greenhouse planting tomatoe while ensuring the water demand of tomatoes, reduce excess water, and reduce the relative humidity of the air in the greenhouse.
2. The purpose of ventilation and dehumidification is to cool down, dehumidify and ventilate. For tomatoes grown in a long season, the vents should be opened wide in autumn and summer to reduce temperature and humidity. When the temperature reaches the upper limit of growth, ventilation should be started to avoid the generation of new water vapor. Even on cloudy days, proper ventilation should be provided.
3. Mulching in greenhouse for planting tomato can not only reduce water evaporation, reduce indoor environmental humidity, and improve water utilization, but also increase ground temperature, which is conducive to the growth and development of tomato roots.
4. Strengthening management of heat preservation and dehumidification and increasing greenhouse temperature can effectively reduce the relative humidity of the air in the greenhouse planting.
