What is the critical period for dry hot wind damage to wheat?

Dry hot wind is a meteorological disaster that can occur during wheat cultivation. Its occurrence usually leads to reduced wheat yields, so which period is the critical period for dry hot wind damage to wheat?

1. The critical period for dry hot wind damage to wheat

The critical period for dry hot wind damage to wheat is the grain-filling stage. After wheat is affected by dry hot wind, the grain-filling stage is shortened, the awns and stems dry up, the leaves lose their green color, the grains become shriveled, and the yield decreases.

2. Types of dry hot wind damage to wheat

1. High temperature and low humidity: mainly manifested as dry leaf tips, yellowed and withered wheat stalks, and shriveled grains.

2. Withered ripening after rain: high temperatures after rain, intense sunlight, and continuous hot wind cause wheat to wilt green or ripen prematurely and wither.

3. Dry wind: low humidity and strong wind; even when the daily maximum temperature is below 30 degrees, it can still cause dry hot wind damage to wheat.

3. Prevention and control measures for dry hot wind

1. Irrigate sufficiently at the grain-filling stage, and in windless weather irrigate and drain as you go, which can lower the temperature of the wheat field and increase field humidity.

2. Control pests and diseases so that the leaves remain green, the root system is vigorous, and the plants are strong.

3. Spray potassium dihydrogen phosphate to enhance the wheat plants' ability to resist dry hot wind.

When cultivating wheat, in addition to pest and disease control, pay attention to changes in weather. Generally, the local meteorological bureau will carry out relevant monitoring and issue notices, and relevant personnel can follow them in real time.