The temperature in the winter wheat area is low today and tomorrow is not suitable for irrigation
From February 12 to 13, the winter wheat in the north suffered from weak snowfall in the drought-stricken areas. Compared with the precipitation process from the 9th to the 10th, the precipitation intensity of this process is weak. The cumulative precipitation in most parts of the northern winter wheat arid area is less than 2 mm. The snowfall in parts of central and western Shandong, western Shanxi and Beijing 3 to 6 mm. In the northern part of the winter wheat, the meteorological drought in the dry area is further alleviated. As the snow melts, the surface layer of the soil will also be improved.
It is expected that in the next ten days (14 to 23), the winter wheat in the northwestern region, north China, Huanghuai and other wet areas will have weak precipitation, with precipitation of 1 to 3 mm, including 5~ in southeastern Gansu and southwestern Shaanxi. 8 mm (Figure 6). The specific forecast of the main precipitation process is as follows:
From 15 to 16th, there were less than 2 mm of snowfall in southeastern Gansu, southwestern Shaanxi, northwestern Shanxi, northern Hebei, and northern Susong.
From 17 to 18, there were 1-3 mm precipitation in the meteorological arid regions such as southwestern Shaanxi, southern Gansu, western Henan, northwestern Shanxi, northern Hebei, and northern Jiangsu. Among them, southeastern Gansu and southwestern Shaanxi have 4 to 6 mm.
Around the 22nd, there were 0 to 2 mm of rainfall in the southeastern part of the northwestern region and the western part of Huanghuai.
Today (15th), the average daily temperature in the northern winter wheat area is below 3 °C, which is not suitable for irrigation. On the 16th, the average daily temperature in the south of Gansu Province, southwestern Shaanxi, southern Henan and western Anhui will be above 3 °C, which is suitable for irrigation; the remaining winter wheat areas are still not suitable for irrigation.
From 17 to 18, the average daily temperature in southern Henan, southern Shandong, Jiangsu and Anhui is above 3 °C, which is suitable for irrigation.
From 19 to 23, the temperature in the central and eastern parts of China showed a rising trend. The average daily temperature in the southwestern Shaanxi, southern Gansu, Henan, southwestern Shanxi, southern Hebei, southern Shandong, northern Susong and other winter wheat drought areas will be higher than 3 °C, suitable for irrigation. .
Agricultural production advice
First, we must pay close attention to weather changes and scientifically organize spring irrigation. The winter wheat drought area should pay close attention to the weather changes, and master the irrigation timing and irrigation amount according to the seedling situation and sensation. In areas where irrigation is required, sprinkler irrigation or small water irrigation should be carried out after the average daily temperature rises to 3 °C, and the irrigation water can be completely infiltrated on the same day to prevent the surface from freezing and freezing the wheat.
Second, it is necessary to classify and manage the field in the green period according to the situation of the seedlings and the sensation. Winter wheat in the north will gradually enter the greening period, and all localities should do a good job in the preparation of wheat field management. For small or late-weak wheat fields, it is necessary to apply the greening fertilizer to the green water while promoting the return of green water, and promote the roots and oysters; in areas with less precipitation and poor irrigation conditions, measures such as rowing and straw mulching should be taken to protect the mites.
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