Is dry hot wind a disastrous weather phenomenon in agriculture?

Dry-hot wind is a kind of weather with high temperature, low humidity and certain wind force, which is disastrous for agriculture. Dry-hot winds in late spring and early summer mainly appear in North China, Northwest China and Huanghuai area.

During wind-heat drying, the temperature rises obviously, the humidity drops obviously, accompanied by a certain wind force, transpiration intensifies, and the roots can't absorb enough water, which often leads to insufficient grain filling, serious chaff, and even wheat withers and dies.

Meteorological index of dry-hot wind disaster

The meteorological indicators of dry-hot wind disasters are different, winter wheat and spring wheat are different, and the regions are also different. Generally speaking, for high temperature and low humidity type: mild dry-hot wind refers to the maximum temperature of 29-34℃ or above on 14 and the wind speed of 2-3m/s or above. Dry-hot wind refers to the daily maximum temperature above 32-36℃, relative humidity below 20-30% at 14, and wind speed above 2-4m/s at 14.

Heat-withered type after rain: there is a rainfall process within 0/0 days before wheat matures, and it turns sunny and warms up after rain, and the daily maximum temperature is above 30℃ within 2-3 days.