Watering is an important agronomic measure in the production of vegetables. Especially in the summer of high temperature and strong light, reasonable watering is the key to promoting vegetable production. It is recommended that the vegetable farmers watering the following two points.
Water combination
Watering greenhouse vegetables on the one hand is to add water to vegetables, and also bear the role of greenhouse cooling, so in the watering should pay attention to the combination of large water and small water. Especially for the seedlings that have just been planted, the water is poured to promote the hair roots, and the small water wetlands are cooled.
In the hot season, vegetables are prone to prolonged conditions. At this time, appropriate water control should be carried out to reduce the absorption of nutrients, especially nitrogen, which is beneficial to the growth balance of plants. Of course, the timing of water control should be well grasped, not only to reduce the situation of prosperous, but also to control the situation of rolling leaves and wilting.
In addition, watering in the hot season should pay attention to the water temperature and ground temperature. If the water temperature is more than 30 °C, it will easily cause the rooting. Therefore, watering in the hot season is usually carried out in the fine morning.
Replenish water in time during high temperature
In high temperature, choose to fill the canal at about 10 o'clock in the morning or install the atomizing nozzle on the roof. Every day at 10 o'clock in the morning and around 4 o'clock in the afternoon, spray water in the shed. These measures reduce the temperature in the shed and increase the humidity in the shed. Improve the resistance of vegetables to high temperature environment, reduce the occurrence of high temperature damage and viral diseases.
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