Sunny weather is conducive to the growth of greenhouse vegetables, but adverse weather such as overcast, wind, fog and snow often occurs, affecting the normal production of shed vegetables. Therefore, response measures should be taken in response to changes in the weather to increase the production of greenhouse vegetables.
First, sunny shed management
1. Water and fertilizer management. Watering Note listening to the weather forecast, so that there are 3-5 days of fine weather after watering, and timely release of air and humidity. Fertilizer should be balanced according to the vegetable's appearance and growth period, and there should be targeted spraying of trace element fertilizer.
2. Temperature management. Light and temperature are the keys to greenhouse vegetable production and can be controlled by uncovering the grasshoppers. When the air temperature in the shed is higher than 30°C, promptly release the air. When the temperature is around 25°C, close the air outlet. When the temperature in the shed before sunset drops to 20°C, timely cover the grasshopper insulation.
3. Prevent and treat diseases in time. The best choice for prevention and control of aerosol and dust agent disease prevention, pay attention to alternate medication, so as not to produce drug resistance.
Second, Lianyin Snow Covered Vegetable Management
In case of overcast snow and fog, management must be based on heat preservation and increased light. Production should take the following measures:
1. Multi-layer coverage. Covering the straw film with straw and covering the straw with old plastic film or non-woven fabric to keep the grasshopper dry and improve the heat preservation effect. At the same time, wheat straw can be covered on the ground to prevent the heat in the soil from being emitted to the space and increase the soil temperature.
2. Try to scatter light. In the case of overcast days, as long as the temperature is not very low, we must insist on unraveling the grass every day to try to get scattered light. You can also install fluorescent lights to increase lighting.
3. Snow days management. During the daytime snowfall, if the temperature is not very low, you can use the old plastic film to cover the grass. If you do not wet it, remove the snow from the shed immediately after stopping the snow. If the snowfall temperature is low during the day or when snow falls during the night, the grasshopper should be dropped and an old shed film should be placed on the grasshopper to prevent the snow from wetting the haystacks. After the snow stops, the snow can be cleared in time. If the snowfall is large, snow should be removed from the sheds in several stages during the snowfall to prevent the snow from being overwhelmed by the thick snow.
4. It is forbidden to top up with water. Even if the temperature is low in the cloudy sky, watering fertilizer should be stopped, so as to avoid rooting vegetables and aggravating the occurrence of diseases.
5. Repeated release. From 12 o'clock in the afternoon to 2 o'clock in the afternoon, according to the outside temperature conditions, open the small joints on the roof for a short period of time, 5-10 minutes each time, release the air 2-3 times, reduce the humidity inside the greenhouse, and discharge harmful gases.
6. Thinning and thinning fruit. According to weather forecast, ripening or nearly ripening fruits should be picked early before the arrival of continuous cloudy snow and fog to reduce the nutrient consumption of the plants, which will help protect the leaves and young fruit, return the nutrients to the roots, promote root growth, and strengthen the plant defense. Poor environmental capacity.
First, sunny shed management
1. Water and fertilizer management. Watering Note listening to the weather forecast, so that there are 3-5 days of fine weather after watering, and timely release of air and humidity. Fertilizer should be balanced according to the vegetable's appearance and growth period, and there should be targeted spraying of trace element fertilizer.
2. Temperature management. Light and temperature are the keys to greenhouse vegetable production and can be controlled by uncovering the grasshoppers. When the air temperature in the shed is higher than 30°C, promptly release the air. When the temperature is around 25°C, close the air outlet. When the temperature in the shed before sunset drops to 20°C, timely cover the grasshopper insulation.
3. Prevent and treat diseases in time. The best choice for prevention and control of aerosol and dust agent disease prevention, pay attention to alternate medication, so as not to produce drug resistance.
Second, Lianyin Snow Covered Vegetable Management
In case of overcast snow and fog, management must be based on heat preservation and increased light. Production should take the following measures:
1. Multi-layer coverage. Covering the straw film with straw and covering the straw with old plastic film or non-woven fabric to keep the grasshopper dry and improve the heat preservation effect. At the same time, wheat straw can be covered on the ground to prevent the heat in the soil from being emitted to the space and increase the soil temperature.
2. Try to scatter light. In the case of overcast days, as long as the temperature is not very low, we must insist on unraveling the grass every day to try to get scattered light. You can also install fluorescent lights to increase lighting.
3. Snow days management. During the daytime snowfall, if the temperature is not very low, you can use the old plastic film to cover the grass. If you do not wet it, remove the snow from the shed immediately after stopping the snow. If the snowfall temperature is low during the day or when snow falls during the night, the grasshopper should be dropped and an old shed film should be placed on the grasshopper to prevent the snow from wetting the haystacks. After the snow stops, the snow can be cleared in time. If the snowfall is large, snow should be removed from the sheds in several stages during the snowfall to prevent the snow from being overwhelmed by the thick snow.
4. It is forbidden to top up with water. Even if the temperature is low in the cloudy sky, watering fertilizer should be stopped, so as to avoid rooting vegetables and aggravating the occurrence of diseases.
5. Repeated release. From 12 o'clock in the afternoon to 2 o'clock in the afternoon, according to the outside temperature conditions, open the small joints on the roof for a short period of time, 5-10 minutes each time, release the air 2-3 times, reduce the humidity inside the greenhouse, and discharge harmful gases.
6. Thinning and thinning fruit. According to weather forecast, ripening or nearly ripening fruits should be picked early before the arrival of continuous cloudy snow and fog to reduce the nutrient consumption of the plants, which will help protect the leaves and young fruit, return the nutrients to the roots, promote root growth, and strengthen the plant defense. Poor environmental capacity.
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