Watering and cooling in summer is not self-defeating
In summer, when encountering high temperature weather, even when the shading net is set and the air outlet is wide open, the temperature in the shed is still difficult to drop. Some vegetable farmers think of watering to cool down. Speaking of it, the effect of watering and cooling is really good, but in the process of operation, some things must be paid attention to.
In production, there are many instances where watering and cooling have adverse effects on crops every year. It can cause the plants to grow long, drop flowers and fruit, and in severe cases, it can cause root damage, and even wilt and die. So, what problems should be paid attention to when watering and cooling the shed in summer? We should do the following three points:
First of all, do not water at noon
Some vegetable farmers believe that noon is the highest temperature of the day, and watering at this time just cools the crops. In fact, watering at noon can easily cause the roots of the crops to "explode" after being stimulated by cold water, resulting in a substantial reduction in production.
Therefore, watering should be carried out before 10 o'clock in the morning, which can achieve the cooling effect without causing damage to the roots of the crops.
Secondly, the amount of watering should not be too large
Many vegetable farmers believe that water evaporates quickly in summer, and flooding does not matter. Therefore, these vegetable farmers often water the big and small ditches together in summer, and fill the big and small ditches to the full every time. However, this view and practice is wrong.
Third, pay attention to avoid the special growing season of crops
A certain growth period of crops is not suitable for watering, especially large watering. For example, during the flowering period of blueberries, watering will often cause the flowers and fruits to fall; in the mature period of watermelon, watering will easily cause the melon to crack.
Therefore, when watering and cooling in summer, vegetable farmers must pay attention to avoid this special period of crops to avoid adverse effects and losses.
Fourth, pay attention to early nutritional supplementation to prevent viral diseases during high temperature
Supplement nutrition early in the high temperature period, the plant is strong, and the root system is developed, which will greatly enhance the plant's ability to resist diseases and insects and resist adversity.
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