Watering vegetables for days
The greenhouse sheds have a large amount of water in summer, but be cautious when watering. If you water at the highest temperature during the day, it may cause physiological diseases such as acute wilting of vegetables. There is a vegetable farmer in Sunjiaji Street because of watering. It was badly damaged by time.
The vegetable farmer planted kidney beans, because the well-managed plants grew vigorously, and the leaves were dark green, with numerous fruits hanging on the branches. It was very gratifying. However, after fresh water was poured around 11 am, the leaves of the beans suddenly rolled up and the edges of individual leaves were burned. It was very serious. Although they later adopted foliar sprays and loved them, amino acid leaf fertilizer was applied. The roots were filled with roots and seedlings and other measures to remediate the disease, but the reduction in output was a foregone conclusion.
Nowadays it is in the summer with high temperature and strong sunshine. The ground temperature is already very high. If a strong light shines for several hours in the morning, the ground will absorb more heat to make the ground temperature higher, and the water used for pouring the ground will be pumped out of the ground. The temperature is relatively low. Watering kidney beans with such well water will cause a sharp drop in soil temperature, resulting in a reduction in root metabolic activity and a significant reduction in active absorption. And at low temperatures, the viscosity of the protoplasm increases, the resistance of the water through the root tissue increases, the movement of the water molecules slows, and the osmotic action decreases, which also slows down the water absorption rate of the root system. At the same time, due to the high temperatures and transpiration of the leaves on the ground, the water absorption rate of the roots is far from compensating for the rate of water loss in the aboveground parts, causing the kidney beans to lose a lot of water in a short period of time, resulting in serious water in the body. Deficit, so that plants appear wilting phenomenon, dry leaves, dry tip.
Therefore, watering vegetables must be selected in summer. It is not appropriate to pour water at high temperatures. It should be selected before 10 o'clock in the morning and after 4 o'clock in the afternoon. When the sun shines gradually, it is better to water when the temperature is gradually reduced.
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