Three-point principle for preventing spring drought and freezing water of wheat

Grow wheat

Timely watering wheat frozen water can prevent spring drought, stabilize ground temperature, enhance the cold resistance of wheat, and help wheat seedlings survive the winter safely. However, when pouring frozen water, we should grasp the following three principles.

First, the temperature of pouring frozen water should be controlled when the daily average temperature is 5 degrees. If the frozen water is poured too early, the air temperature is high and the evaporation is large, it will not only fail to store water and moisture, but also cause the wheat seedlings to grow and reduce the anti-freezing ability of wheat seedlings. If the frozen water is poured too late, the temperature is too low, the soil is frozen, and the water cannot be seeped, so that the wheat seedlings are frozen. The experience of the masses is to master that "early watering is not only long, but late watering does not freeze." It usually takes place around the middle of November.

Second, it is appropriate to water when the soil water content is less than 70% of the maximum field capacity, and if it is higher than 80%, it can be irrigated or late. Whenever winter water is watered, the soil should be loosened in time to preserve soil moisture and prevent cold.

Third, in specific irrigation, weak seedlings should be early, prosperous seedlings should be late, strong seedlings should be timely, and "single-root seedlings" without tillers should not be irrigated in winter.