When is the best time to water vegetable fields?

1, the watering time should be chosen.

Choose the right time to water vegetables, usually two time periods. The time period is before 10 am. There is still a time period, that is, after 4 pm. In addition to these two time points, other time periods can not be watered. Some people like to water at noon when the temperature is the highest. They think that vegetables need water at this stage, but this is actually wrong. At this time, watering will suddenly lower the temperature of the roots, slow down metabolism and weaken the water absorption capacity of the roots. However, the water demand of stems and leaves has not decreased, so the roots will be more short of water. Instead of replenishing water, watering is wasted.

2, watering can't be in place at one time, but it should be watered many times, but the amount should be less.

Some farmers think that the weather is so dry that they should water more water at one time, so that vegetables will not be short of water. In fact, this is not enough. If the water is poured too much, the vegetables will not be absorbed, and the roots will rot if soaked in water. Pay attention to watering the vegetables. You can't water them too much or too much. If you water it casually, it will be counterproductive. When we water it, we can water it a little less, or we can water it a few times more.

3. Water vegetables with well water.

Rural areas are different from cities. There are many water sources, such as well water, pit water, tap water and so on. However, it is better to water vegetables with well water, because well water is clean and contains enough nutrition, and it is also convenient to use well water. Tap water can't be used Tap water contains bleaching powder and disinfectant. If you water vegetables directly, it will have a bad effect on them. It is not good to use the water in the pit. Although there is nutrition in it, there are also many germs, which will increase the pests and diseases of vegetables.

In addition to watering, management should also keep up.

The field is too dry, watering can really cool down, but this way of cooling down is limited after all. During the high temperature period, we still need to do some shading work, such as using shading cloth to cool down. When the temperature is low, the shade cloth is uncovered. When watering, but also on the fertilizer, if according to the growth of vegetables, fertilization mainly on nitrogen, phosphorus, potassium these main fertilizers. In the high temperature period, in fact, pests and diseases are more serious than those in the low temperature period. If pests and diseases occur in the field, it is necessary to spray pesticides in time to prevent and control them.