Greenhouse vegetables should not be watered by day

When many vegetable farmers manage greenhouse vegetables, they are generally watered according to days (usually pouring water once every 10 days or so). The author believes that this method of watering according to the day is very undesirable. If you do not look at the actual situation, just watering the land mechanically will inevitably result in phenomena such as excessive watering and excessive emergence of roots and dead trees.

Watering vegetables should be adjusted according to the growth of the vegetables, soil conditions, weather changes, etc., instead of pouring water once every few days. Rational watering, first of all, depends on the growth of the plant. Usually, when the plants are dry, the leaves will wilt, the growth will weaken, and the fruit will develop more umbilical rot. At this time, the water should be replenished in time. Secondly, it depends on the soil moisture level. Watering greenhouses when it is not dry is not only unfavorable for raising the ground temperature, but also easily leads to the deterioration of soil permeability, resulting in the lack of oxygen in the root system, reducing the vitality of the root system, causing the roots of the roots to appear yellow leaves, and third, before watering. Be sure to watch the weather forecast, not only to select sunny watering, but also to ensure that there are 2 to 3 days of sunny days after watering, in order to avoid the rainy weather after watering, resulting in increased humidity in the greenhouse, lower ground temperature, multiple diseases, In the winter season, special attention should be paid to the fact that in the first two days after the sunny day, it is not suitable for watering. The temperature of the shed should be raised first to allow the plants to return to normal and water again. Finally, depending on the ground temperature, the vegetables are suitable. The average daily temperature is about 22°C, while in the deep winter season, the temperature in the greenhouse is usually 15°C to 20°C. If the watering is excessive or the watering time is not right, the ground temperature will drop rapidly, causing root injury and endangering the environment. It was grown aboveground. Therefore, watering at a low temperature is preferably performed after the grass is opened in the morning.

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