The drought in the northern wheat area has improved significantly, and the temperature is lower but there is no danger of freezing

From February 25th to 28th, there was a large range of rain and snow in the northern winter wheat arid area. The precipitation process covered most of the winter wheat and drought areas in the north. The process has large precipitation and long duration, and the winter wheat is affected by the dry soil. The lyrics have been significantly improved, the drought in most areas has eased, and the drought in Anhui and Jiangsu has been basically relieved, which is very beneficial to the growth of winter wheat in most parts of the north.

From March 1st to 3rd, the temperature in Huanghuai and other places in North China is low and it is not suitable for irrigation. It is suggested that the winter wheat and arid areas should pay close attention to the weather changes, strengthen the field management, and the areas where the drought has not been alleviated should grasp the scientific organization of spring irrigation in the early March when the temperature rises in the first half of the year, and the drought-heavy fields in the early stage should be done in the field of rejuvenation and re-appreciation. Fertilizer, promote the improvement of the seedlings.

The drought in the north has been significantly improved

According to the comparative analysis of soil moisture monitoring on February 25 and March 1, the area of ​​the winter wheat in the drought-stricken area in the north is narrowed, and only 0-20 cm in some areas of southwestern Hebei and western Henan, there is a lack of defects, Henan Shallow soil moisture is sufficient in parts of the central and eastern regions, southern Shandong, northern Jiangsu, and northern Anhui.

The precipitation process has alleviated most of the drought in the northern winter wheat arid area. Only in the western part of Henan, southern Hebei, northern Shandong, southwestern Shanxi, central Shaanxi, Gansu, southern Anhui, etc., there are mild agricultural droughts, drought in Anhui and Jiangsu. The basic lifting is very beneficial to the growth of winter wheat in most parts of the north.

Agricultural drought in the northern winter wheat area on March 1, 2011

The meteorological department has carried out comprehensive artificial precipitation (snow) operations with obvious effects.

The third snow in Hebei Year of the Rabbit eases the drought of winter wheat

The meteorological departments of the relevant provinces (autonomous regions and municipalities) seized the favorable opportunity for precipitation and fully carried out artificial precipitation (snow) operations. According to statistics: From February 25th to March 1st at 11:00, Shanxi, Anhui, Shandong, Henan and Gansu provinces carried out 41 aircraft artificial precipitation operations, with a flight time of 81 hours and 27 minutes, and the cumulative flight area of ​​the aircraft exceeded 74. Ten thousand square kilometers. Beijing, Tianjin, Hebei, Shanxi, Jiangsu, Anhui, Shandong, Henan, Shaanxi, and Gansu carried out 2,644 artificial rainfall enhancement (snow) operations, 25,687 shots of rain-enhanced (snow) shells, 80,500 rockets, and 2,247 burning rods. There are 400 balloon bombs. The effect of snow (rain) on the area affected by the operation is obvious.

From March 1 to 3, the temperature in the northern winter wheat area continues to be low but will not cause freezing damage to winter wheat.

During the night of March 1st to 3rd, the temperature in the northern winter wheat area will remain low. The lowest temperatures in Beijing, Tianjin, Hebei, and the southwestern part of the mountain are -4 to -6 °C, and the lowest temperature in most parts of Shandong is -2 to -5 °C. The lowest temperature in the northern part of Henan and Susong is 0~-2°C, and the lowest temperature in Huaihe area is about 0°C, but it will not cause freezing damage to winter wheat. On the 4th, the temperature in the winter wheat area began to rise slowly, and the temperature was slightly reduced by the cold air around the 7th.

Before March 4th, there was basically no precipitation in the arid areas of northern winter wheat. Around March 5, there will be weak precipitation (1 to 5 mm) in the west and south of Huanghuai.

Agricultural production advice:

In the northern winter wheat area, it is necessary to timely suppress and plan according to the condition of the seedlings and the sensation, so as to ensure the warming of the winter wheat and ensure that the winter wheat returns to green at the right time. After the greening, the demand for water and fertilizer will further increase. The weaker wheat fields can increase the application of quick-acting fertilizer and promote the improvement of the seedlings. Areas where the drought has not been effectively alleviated should seize the temperature rise period in early March and choose to carry out spring irrigation.

In addition, as the temperature rises and the water requirement for winter wheat greening increases, all localities should continue to pay attention to the changes in soil moisture in the winter wheat area and take timely measures to prevent the drought from developing again.