The critical period of the harm of dry and hot wind to wheat is

Dry and hot wind is a kind of meteorological disaster that will occur in the process of wheat planting. The emergence of it usually leads to a reduction in wheat production, so what is the critical period in which hot and dry wind is harmful to wheat?

1. The critical period of the harm of dry and hot air to wheat

The key period of the harm of dry and hot wind to wheat is the filling period. When wheat is damaged by hot and dry wind, the filling period will be shortened, the wheat awn and stem will dry up, the leaves will lose green, the wheat grain will be withered, and the yield will be reduced.

Second, the harm types of dry and hot air to wheat.

1. High temperature and low humidity: the main manifestations are wheat dry tip, wheat straw withered yellow, wheat grain dry chaff.

2. Withering after rain: high temperature after rain, strong sun exposure and continuous hot wind make the wheat withered or withered.

3. Dry wind: low humidity and strong wind, even if the daily maximum temperature is less than 30 degrees, it will cause dry and hot damage to wheat.

III. Prevention and control measures of dry and hot air

1. Pouring enough grouting water with irrigation and drainage in windless weather can reduce the temperature of wheat field and increase the humidity of wheat field.

2. control diseases and insect pests to make the leaves green, the root system exuberant and the plant strong.

3. Spraying potassium dihydrogen phosphate to enhance the ability of wheat plants to resist dry and hot wind.

In wheat planting, in addition to the prevention and control of diseases and insect pests, but also pay attention to meteorological changes, the general local meteorological bureau will carry out relevant monitoring and notification, relevant personnel can pay attention to in real time.