The first is shallow water: it should not be too large. At low temperatures, the vegetables in the shed evaporate slowly and the water demand is reduced accordingly. Therefore, the watering amount should be small and the interval should be longer. Avoid flooding with large water. It should be watered or sprayed to avoid it. Low temperature and high humidity lead to vegetable roots. In the first two days after watering, the humidity in the shed is likely to increase. Reasonable ventilation and cooling should be paid attention to prevent induced diseases. Ventilation is generally appropriate at high noon temperatures. The second is the appropriate watering time: winter shed vegetable watering should be arranged around noon, preferably after 10 am before 3 pm, the shed temperature during this period is relatively high, the side effects after watering are minimal. Avoid watering in the morning and evening to prevent frost damage to vegetables. Watering should use well water as much as possible, because the temperature of the well water is high, which can reduce the physiological stimulation of vegetables. The third is flexible watering depending on the weather: according to the weather conditions, master the principle of "watering properly on sunny days, less or no watering on cloudy days, and no watering on snowy days". When the weather changes from sunny to overcast, the amount of water should gradually decrease, and the interval is appropriately lengthened; when it changes from overcast to sunny, the amount of water changes from small to large, and the interval time changes from long to short. The fourth is to focus on watering: the temperature of different parts of the greenhouse varies widely, and the amount of watering should be different. In the south of the greenhouse and near the heat sources such as stoves and flues, soil moisture and evaporation are large, and the amount of watering can be appropriately large; the temperature on the east and west sides and the north of the greenhouse are relatively low, and the sunshine time is short, and the amount of watering should be appropriately small some. Disclaimer: Some articles on this website are transferred from the Internet. If third party legal rights are involved, please inform this website to deal with them. phone Chili Sauce,Hoisin Sauce,Vegetables And Fruits Sauce,Pizza Sauce Oyster Sauce Guizhou Guisanhong Food Co., Ltd , https://www.guisanhong.com
Technical points of watering vegetables in greenhouses
Reasonable watering is an important measure to ensure the robust growth of greenhouse vegetables and increase yield. The temperature in winter and spring is low, and the watering of greenhouse vegetables is different from other seasons. It depends on the sky and the seedling situation to avoid side effects. According to experience, the following four countermeasures should be taken for watering vegetables in greenhouses: