Shelter management in different weather
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 long-term growth and growth of vegetables, and should be targeted to spray trace element fertilizer. 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. Prevent disease 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. Lianyin Snow Covered Vegetable Management In case of overcast snow and fog, management must be based on heat preservation and increased light. The following measures should be taken in production: 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. Strive for scattered 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 fight for scattered light. 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. Do not apply fertilizer to 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. 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. 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. Windy weather The winds cool down and the shelter is kept under pressure. During the daytime breeze, every three to five lay down one and a half rolls of grasshoppers in the middle of the film, and should not be placed in the end to prevent it from being blown by the wind. When the wind blows at night, all the grasshoppers must be tightly compacted. The feet in front of the shed must be firmly clamped with wooden poles, sandbags or rocks to prevent damage to the film and the shed body and to prevent freezing damage to the vegetables. Lianyungang When it is clear after sunny days, do not uncover all the grasshoppers. In the first 3 days, the flowers should be gradually exposed. The area of ​​the exposing cemetery will gradually increase to prevent the seedlings from hitting the seedlings. After the exposing, attention was paid to observation, and it was found that vegetables smashed and immediately covered a part of the grasshopper. This repeated several times, the number of cultivars was increased, and even the growth of vegetables was normal. Generally, all of them were uncovered after 3 days.
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