CCTV News: Affected by the high temperature weather, in the winter wheat areas in Henan, Shaanxi and other places, there will be obvious dry and hot winds for 3-5 days. In response to this, all localities have actively responded, making every effort to prevent drought and resist drought, ensure supply and irrigation.

Dry hot wind will cause crop transpiration to intensify the eventual reduction of yield

Dry hot wind weather, as the name suggests, is dry, hot and windy weather. It mainly occurs in late spring and early summer when there is little rain and high temperatures, especially during the critical period of wheat earing, flowering, and grouting, and has the characteristics of sudden and short-term.

If the maximum temperature on that day exceeds 32℃, and the wind speed at 14 o'clock on that day is greater than or equal to 2 meters/second, and the relative humidity is less than 30%, the dry and hot air standard will be reached.

The impact and harm of dry and hot air on crops is mainly manifested in physiological drought, which leads to intensified transpiration of crops, imbalance in water balance, and reduced photosynthesis, which may eventually lead to severe crop yield reductions.

The focus of preventing dry and hot air is watering and "one spray and three preventions".

Henan: Prevent dry and hot wind and strive to ensure a bumper harvest of more than 80 million mu of wheat

Henan is the largest wheat province in my country, with a planting area of ​​about 85 million mu this year. According to the risk warning of dry and hot wind disaster in wheat jointly issued by the Henan Provincial Meteorological Bureau and the Department of Agriculture and Rural Affairs, Anyang, Puyang, Hebi, Jiaozuo and Zhengzhou are high-risk areas for dry and hot wind.

In Yong City, Shangqiu, Henan, local agricultural technicians came to the fields to check the growth of wheat on site and guide farmers to scientifically prevent and deal with the hazards of dry and hot air.

At present, Henan Province has implemented more than 23 million mu of "one spray and three preventions" and is still speeding up the promotion to increase the grouting rate, extend the grouting time, and increase production.

Tongchuan, Shaanxi: Implement "one spray and three preventions" to help stabilize summer grain production

At present, wheat in Tongchuan, Shaanxi is in the grouting period. Due to the lack of effective rainfall in the local area for a long time, most areas of the city have suffered severe drought. In order to cope with the possible dry and hot wind weather in the later stage of wheat, the local area acted quickly and urgently allocated 100 plant protection drones to carry out "one spray and three preventions" operations.

Shi Lei, head of the Flying Defense Team of Tongchuan City, Shaanxi Province: After receiving the drought resistance task, our Flying Defense Team carried out "one spray and three preventions" drought resistance operations from south to north. // The daily operation volume can reach more than 7,000 mu.

Changzhi, Shanxi: Drip irrigation saves water and helps drought resistance and protects the "lifeline" of grain fields

In recent days, agricultural experts from Changzhi City, Shanxi Province have gone deep into the fields and adopted water-saving irrigation methods such as droppers and sprinkler irrigation according to local conditions to increase the frequency of irrigation. Faced with drought weather, staff should carefully inspect the drip irrigation lines every day and promptly deal with drip blockage and pipeline damage to ensure that every wheat seedling can be accurately irrigated.