In spring, watering vegetables in greenhouses should pay attention to methods. The specific requirements are: First, the watering should not be too large. At low temperatures, the water requirement should be reduced accordingly. The amount of watering should be small, and the interval time can be appropriately longer, avoid flood irrigation. In order to avoid low temperature and high humidity caused the roots of vegetables. Second, the time should be appropriate. Watering vegetables in spring should be arranged before and after noon, before 10am and before 3pm, when the temperature of the greenhouse is higher, and the side effects after watering are the least. Try to avoid watering in the early morning and early evening. In case of causing freezing damage to vegetables. Third, depending on the weather conditions, sunny days should be properly poured, and the cloudy days should be less or no. The wind and rain should not be watered to ensure normal greenhouse temperature. Fourth, there should be large water evaporation in the southern part of the large greenhouse. The amount of watering can be larger; the temperature on the east and west sides of the greenhouse is lower, and the sunshine hours are also short. The amount of watering should be less. Raw Sunflower Seeds,Plain Sunflower Seeds,Unroasted Sunflower Seeds,Raw Sunflower Wuyuan county dafeng oil food co.,ltd , https://www.dafengfood.com.cn