合理浇水,是保证大棚蔬菜健壮生长、提高产量的重要措施。冬季气温低,大棚菜浇水不同于其他季节,既要看天,又要看地看苗情,以避免副作用。根据经验,大棚菜冬季浇水应注意以下四个方面。1.通风降温。棚内蔬菜蒸发慢,需水量相应减 Watering rationally is an important measure to ensure the robust growth of greenhouse vegetables and increase the yield. Winter temperatures are low, greenhouse vegetable watering is different from other seasons, it is necessary to see the sky, but also look at the Miao situation to avoid side effects. According to experience, shed vegetables winter watering should pay attention to the following four aspects. 1. Ventilation and cooling. Shed vegetables shed slowly, the corresponding reduction in water demand