When wheat grows into the booting stage, it is known as low-temperature chilling because of the hazard caused by low temperatures above zero degrees.
1. The reason why wheat suffers from cold weather
After the jointing of wheat to the stage of flagging, the ability to resist low temperature is greatly weakened when the water content is high and the tissue is young. The average daily temperature is between 10-15°C, and it is extremely sensitive to environmental low temperatures and water deficits, particularly sensitive to low temperatures, if the minimum temperature is lower than 5- 6 °C will suffer.
The cold chilling of wheat is characterized by the fact that the stems and leaves are not affected by it, and there is no abnormal performance. The affected part is all or part of the spikelets of the ear, which is characterized by delayed heading or empty spikelets, or spikelets in the ears. Alas, only a part of the fruitfulness has seriously affected the yield.
2. The Cold Defense of Wheat and Its Remedial Measures
In the cold before the advent of irrigation, smoking and other methods can prevent and reduce the occurrence of low-temperature chilling; low-temperature chilling should be promptly fertilizer and watering to ensure normal wheat grouting, improve grain weight.
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