According to the monitoring and forecast by the Central Meteorological Observatory, it is expected that from February 25 to 28, most of the northern winter wheat-affected areas will have a significant precipitation process with a cumulative precipitation of 5 to 15 mm. Among them, southwestern Shaanxi, southwestern Shanxi, Henan, central and northern Susong, and south-central Shandong have 15 to 30 mm, and the precipitation in the central and southern Henan and northern Susong can reach 40 to 55 mm.
For the weather process, make the following recommendations:
It is suggested that irrigation in the eastern part of Hebei Province and northern Shandong, where precipitation is not obvious, still needs to be scientifically organized according to the temperature. If the average daily temperature falls below 3 °C, stop irrigation and ensure that there is no clear water overnight to prevent freezing damage to wheat.
Specific forecast:
On the 25th, daytime, precipitation occurred in Shaanxi, western Henan, and western Shanxi, and most other areas in the dry area began to precipitation on the night of the 25th. The main precipitation will occur from the 26th to the 27th. During the period, there are medium to heavy snow in parts of northwestern Shaanxi, north-central Shanxi, northwestern Hebei and other places, with heavy snow (10~12 mm) in the local area; south central Henan and southern Shandong Heavy rain (25-40 mm) was found in the northern part of Anhui Province and northern Jiangsu.
On the night of the 27th, the north-central and northern parts of Shaanxi began to weaken and gradually ended.
On the night of the 28th, the southwestern part of Shaanxi, the south-central part of Henan, and the northern part of Susong weakened and gradually ended.
In addition, the minimum temperature in Huanghuai and the north of the area from February 28 to March 1 will fall below 0 °C. It is estimated that from the night of February 28 to March 1, the lowest temperature in the northeastern part of Gansu, northwestern Shaanxi and western and northern North China can be reduced to minus 6 to minus 10 °C, and the lowest temperature in the eastern and southern parts of North China is minus 4 to minus 6. °C, the lowest temperature in the central and northern part of Huanghuai is minus 2 to minus 4 °C, the lowest temperature in the southern part of Huanghuai is 0 to minus 2 °C, and the lowest temperature in Huaihe is about 0 °C.
From March 1st to March 7th, there was no obvious precipitation in the arid areas of northern winter wheat. From March 2nd to 4th, affected by another cold air, the temperature in most dry areas will drop by 3~5°C, accompanied by northerly winds of grades 4~5.
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