In winter, how should vegetable greenhouses meet rain and snow weather continuously?
In winter, vegetable greenhouses encounter continuous rain and snow, which will adversely affect vegetable production and farmers' income. To deal with this situation, the following measures can be taken:
1. Increase the thermal insulation performance of vegetable greenhouses: in winter, the thermal insulation performance of winter vegetable greenhouse is crucial. The thermal insulation performance of greenhouses can be improved by increasing the thermal insulation materials of vegetable greenhouses, such as thickening the covering film and using thermal insulation blankets. At the same time, wind barriers can be set up around the vegetable greenhouse to reduce the intrusion of cold air.
2. Timely snow removal: When the snow on the winter vegetable greenhouse, it should be removed in time. Long poles or ladders can be used to remove snow to prevent heavy snow from collapsing greenhouses. At the same time, snow melting agents can be laid around the greenhouse to speed up the speed of snow melting and prevent excessive snow.
3. Keep ventilation: Although it is rain and snow, it is still important to keep the greenhouse ventilated. When the temperature is higher at noon, the vent of the greenhouse can be opened for ventilation. This can avoid excessive humidity in the greenhouse and prevent the occurrence of diseases.
4. Control watering: In rain and snow weather, the watering of the winter vegetable greenhouse should be controlled well. If you water too much, it will cause the soil to be too wet, affecting the growth of vegetables. If the water is too little, the vegetables will not grow well due to lack of water. Therefore, watering should be reasonably arranged according to the growth of vegetables and soil moisture.
5. Strengthen pest control: in rain and snow weather, the temperature and humidity in the greenhouse will change, and diseases and pests will easily occur. Therefore, it is necessary to strengthen the prevention and control of pests and diseases. You can check the growth of vegetables regularly, and take timely measures to treat diseases and pests.
6. Increase light: the sunlight in winter is limited, and the lack of light in the greenhouse will affect the growth of vegetables. Therefore, it is necessary to increase the light in the greenhouse as much as possible. You can choose a covering film with good light transmission, regularly clean the dirt and snow on the covering film, and maintain the light transmission of the film. At the same time, reflective devices can be set up around the greenhouse to increase the light intensity.
7. Reasonable fertilization: In rain and snow weather, the fertilization in the greenhouse should be rationally arranged. Mature organic fertilizer or compound fertilizer can be used to avoid the use of single fertilizer to ensure the balanced nutrition of vegetables. At the same time, according to the weather conditions and the growth of vegetables, appropriate fertilization, to avoid excessive fertilization caused by soil salinization and other problems.
