When is the best time to water vegetables in summer? What are the precautions?

The temperature in summer is always so hot, at this time many vegetables need to add a certain amount of water in time. But there are many novice growers who see that their vegetables are sick and immediately water them wildly, which is actually ineffective. Summer vegetable watering also has its principles and methods.

1. Pay attention to the watering time

  Many novice vegetable farmers have such a misunderstanding that when the sun is the strongest and when is the best time to water. In fact, it is not. At this time, the surface temperature is extremely high and the water temperature is low. A lot of watering will easily lead to weakened vegetable root metabolism. resulting in a reduction in production. Therefore, in summer, it is best to start watering in the morning when it is dawn, and stop watering after 9-10 o'clock when the sun is particularly strong. As the temperature rises, the evaporation of water will take away the heat in the vegetable border, so that the temperature in the shed is 3-5°C lower than that in the open field. The watering time should be watered once every 3-4 days. The principle is to increase the frequency of watering and reduce the amount of watering.

Timely topdressing while watering

The type and quantity of top dressing are determined according to the growth of vegetables and the harvest of products. Fruits and vegetables should be topdressed with medium-nitrogen, low-phosphorus, and high-potassium water-soluble fertilizers during the peak picking period. For watering combined with topdressing, watering once with water, once with fertilizer and water, and a small amount of time can also be used. In addition, when it rains heavily, do not pour the rainwater into the shed. Drain water in time after the rain, and dig a drainage ditch in front of the shed or in one of the sheds.

What is "Waterlogged Garden"?

Vegetables love water and are afraid of waterlogging, especially at noon in the high temperature of summer. If there is a sudden thunderstorm (commonly known as hot rain), in addition to draining the waterlogging in time, be sure to water it with well water after the hot rain. This is because the well water is relatively cool. By pouring the well water, the surface heat can be reduced, and the junction of the ground can be reduced at the same time. This is the so-called "waterlogging garden". It is especially important for melons and nightshade vegetables produced in summer.

After a thunderstorm at noon, if the waterlogging is not drained in time, the oxygen in the soil will be insufficient, the root respiration will be inhibited, the absorption of water and minerals will be affected, and anaerobic bacteria will be active, causing the accumulation of inorganic and organic acids in the soil. Elevated, producing some toxic reducing substances such as hydrogen sulfide, ammonia, etc. to poison the roots and die. Therefore, in the summer noon, it is necessary to "waterlog the garden" when it encounters thunderstorms.

3. Don't get wet and dry

  During the fruiting period of solanaceous and melon vegetables, the water demand is uniform. If it is dry and wet, it is easy to cause fruit cracking. This is because the soil is dry and water is insufficient, which will inhibit the fruit expansion. Once watered too much or during heavy rain, the fruit will quickly Swelling, the pulp absorbs water faster than the peel grows, resulting in cracked fruit. Therefore, when the summer is dry, it is necessary to water in time to keep the soil moist, but the amount of watering should not be too large, and it should be drained in time after the rain to prevent the fruit from absorbing too much water and causing cracking.