In the cold winter, timely, appropriate, and scientific watering of sheds is a crucial management measure to ensure the yield and quality of vegetables and improve the efficiency of shed vegetables. The author believes that watering sheds should be done in five ways:
At first sight, when the outside temperature in winter is low, the sunshine duration is short, and the evaporation is relatively small. Well water should be used as much as possible for watering sheds, because the well water temperature is maintained at about 14°C, which is very favorable for raising the shed temperature. Watering should be performed from 10 am to 3 pm, and watering intervals should be appropriately extended. When watering fruits and vegetables, little or no pouring should be done in the early stage. The amount of watering should be increased as the result of the flood season.
Second, the weather in winter is fickle and often encounters rain and snow, and watering should be avoided as much as possible. When sunny days turn rainy and snowy days, the amount of water is gradually reduced until it stops. When there is rain and snow on sunny days, the amount of watering is appropriately increased. Gradually return to normal.
Three look at the food In general, the leafy growing period is shorter, the water demand is more concentrated, the amount of watering should be larger, and the watering interval should be shorter. In all fruits and vegetables, cucumbers, tomatoes need more water, should be a large amount of water and watering intervals.
Fourth, look at the location of the general greenhouse in the south and the shed near the heat source, the higher temperature, greater evaporation, easy water shortage, should increase the amount of watering, and the greenhouse temperature on both sides and away from the heat source is low, The amount of evaporation is small and the amount of watering should be appropriately reduced.
Five Watering Situations After the sheds are watered, the humidity in the sheds is greatly increased. The greenhouses should be closed at noon on sunny days, and high-temperature boring sheds should be provided for 2 to 3 hours. Then increase the ventilation and reduce the humidity in the booth. To prevent the incidence of vegetables, spray prevention, and timely planning in the early growth of shed vegetables, in order to help improve the temperature.
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