1. As of 17:00 on February 19, the drought in the northern winter wheat area
According to the agricultural dispatch of the Ministry of Agriculture, as of 17:00 on February 19, the drought-affected area of â€‹â€‹winter wheat in Hebei, Henan, Shandong, Shanxi, Jiangsu, Anhui, Shaanxi and Gansu provinces reached 96.03 million mu, accounting for 35.1% of the planted area, of which severely affected. The dry area is 17.69 million mu, accounting for 6.5% of the planted area.
Second, winter wheat has a marked improvement in soil moisture in the arid regions
Since the 18th, the temperature in the winter wheat area has rebounded significantly. Most of the wheat areas are suitable for irrigation, and the progress of drought-resistant watering is accelerated. In addition, the soil of 10-20 cm in the south-central part of the winter wheat area has been frozen (Fig. 1), and the soil moisture has improved significantly compared with the previous period. The soil moisture monitoring results on February 21 showed that the 10 cm soil defect area was concentrated in the central and western Henan, north central Shandong, northern Anhui and other places; the 20 cm defect range was significantly smaller than 10 cm, mostly mild defects.
Third, 24-28 days in the northern winter wheat area will show significant precipitation
It is expected that there will be obvious precipitation in the winter wheat areas of the northwestern part of the northwest, north China, the central and western parts of the Huanghuai, and the south. In eastern Gansu, Shaanxi, Shanxi, Henan, and northern Susong, there are 5 to 15 mm, and the local area is 20 to 30 mm. The specific precipitation forecast is as follows:
Shaanxi: On the 24th to 28th, there are 5 to 10 mm of snowfall (rain) in most parts of Shaanxi, and some parts of the southwestern part of Shaanxi have 15 to 25 mm.
Gansu: On the 24th to 28th, there are 3 to 8 millimeters of snowfall (rain) in eastern Gansu, and the local area is 10 to 15 millimeters.
Shanxi: On the 24th, there was a rainfall of about 1 mm in the southwest of Shanxi. On the 25th to 27th, most of Shanxi had 3 to 8 mm of rainfall (snow), and the local area was 10 to 20 mm.
Hebei: From 25 to 26, most of Hebei Province has 1 to 3 mm of rainfall, of which 5 to 8 mm is in the western part.
Henan: On the 25th to 27th, there are 5 to 15 mm of rainfall in most parts of Henan, and some parts of the southern part are 15 to 20 mm.
Shandong: From 25th to 27th, there are 1~3mm rainfall in the west and south of Shandong, and 5~8mm in some areas.
Jiangsu: On the 25th to 27th, there were 3 to 8 mm of rainfall in most parts of Jiangsu, including 20 to 40 mm in parts of the central and southern parts.
Anhui: From 25th to 27th, there are 3 to 10 millimeters of rainfall in most parts of Anhui, including 20 to 40 millimeters in the central and northern parts.
The precipitation process will curb the drought development in the winter wheat area, and the drought in the mildly deficient areas with precipitation above 10 mm will be expected to ease.
Fourth, the winter wheat drought area should pay close attention to the weather changes, do a good job of drought resistance and antifreeze
It is estimated that before the 26th, except for the northwestern part of the mountain and the north-central part of Hebei, the average daily temperature in the winter wheat area is higher than 3Â°C. On the 27th to 28th, the central and western parts of Shanxi, Hebei and Henan have obvious cooling, and the average daily temperature in some areas may drop. Up to 3 Â° C. The dry areas should pay close attention to the weather changes and carry out scientific irrigation according to the situation of the seedlings and the public opinion.
1. In severely deficient areas, the temperature should be raised, and irrigation should be carried out after a warm and warm afternoon; and fertilization should be combined with fertility according to the condition of seedlings and fertility.
2. Pay close attention to temperature changes. If the average daily temperature drops below 3 Â°C, stop irrigation and ensure that there is no clear water overnight to prevent wheat from freezing.
3. Areas with good sensation and good seedlings can be appropriately postponed to return to Qingshui.
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