There are many ways to grow vegetables, including open field cultivation, protected cultivation, etc., while protected cultivation and greenhouse cultivation. The temperature control in the greenhouse facilities is crucial to the growth of vegetables. How to regulate the temperature increase and cooling in the vegetable greenhouse? Xiaobian introduces this to everyone.
First, the temperature increase measures in the vegetable greenhouse
1. Construction of a warm greenhouse: It is best to add insulation material to the wall of the greenhouse. The thickness of the insulation layer on the roof should be about 15cm. The wind barrier should be set at the door. Double-layer curtains should be placed on the inner and outer sides of the door. tight. The back wall should be smeared with white ash, cement or grass mud to prevent heat loss. A cold-proof ditch is installed outside the facility to prevent temperature exchange inside and outside the greenhouse.
2, more organic fertilizer: practice has proved that the addition of sufficient organic fertilizer, can increase the ground temperature of 1 ° C, and can increase the concentration of carbon dioxide in the greenhouse.
3. Increase the light transmittance of vegetable greenhouses: Any measure that can increase the light transmittance is conducive to accumulating more heat in the facility.
4, take multiple layers of coverage: reduce heat loss This is the most economical and effective insulation technology, such as covering the insulation outside the greenhouse, the inner shed, and the straw on the small shed.
5, control the number of watering and water: water can reduce the ground temperature and greenhouse temperature. Watering should be less in the harsh winter and early spring, and avoid flooding. It is better to water the water in isolation, if the drip irrigation effect is better.
6, vegetable greenhouse heating: when the temperature does not reach the temperature required for crop growth, you can take indoor fire, use heating and other heating measures, but pay attention to the need to have someone to look after the fire to prevent fire and excessive temperature burns crop.
Second, the cooling measures in the vegetable greenhouse
1. Strengthen the ventilation of vegetable greenhouses: increase the ventilation openings, especially open the skylights to extend the ventilation time.
2. Appropriate shade for vegetable greenhouses: The roof can be properly shaded with opaque coverings.
3. Remove the multi-layer protection of vegetable greenhouses.
The above is about the introduction of temperature increase and cooling control measures in vegetable greenhouses. I hope that these contents can have some effects on the management of greenhouses for farmers.
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