Recently, the northern winter wheat has experienced two precipitation processes in the drought-stricken areas, which has eased the drought in some areas, and the area of ​​heavy drought in southern Hebei, eastern Henan and northern Jiangsu has shrunk. Due to the recent snowfall in the arid areas of northern winter wheat, the effective water that can be used by crops is increased with the melting and infiltration of snow.
According to the China Agriculture News Network, according to the Ministry of Agriculture working group and experts in the drought-resistant front, the task of drought-resistant wheat is still arduous. Academician Yu Zhenwen, head of the wheat expert guidance group of the Ministry of Agriculture, said that due to prolonged drought, the dry soil layer of most dry areas is above 10 cm, and the drought relief needs to be 30-40 cubic meters per acre, equivalent to 50 mm of accumulated precipitation. the above. Since February 9, there have been two precipitation processes in the northern region, but the precipitation is generally below 5 mm, which is not enough to alleviate the drought. Yu Zhenwen and other members of the expert group further agreed that these two precipitations are very beneficial for relieving soil surface mites in winter wheat areas, promoting wheat germination and secondary root development, but not linking soil surface mites with bottom stalks. To relieve the drought, the drought-resistant watering can not be loose. In particular, it is necessary to pay attention to the scientific drought resistance. The daily average temperature is still below 3 °C. It is not eager to water, so as to avoid freezing damage or mechanical damage caused by freezing. At the same time, in the process of fertilization by snow, all places should avoid excessive fertilization and cause wheat to grow.
Because the number of these two precipitations is relatively small, the main areas of precipitation are basically not overlapping. The precipitation in most parts of the north is less than 5 mm, which is not effective in alleviating the current drought. In particular, there is no effective precipitation in most areas of Shandong and Henan. Still developing. At present, the drought in most winter areas in the north is still heavy. According to the agricultural dispatch of the Ministry of Agriculture, as of 12:00 on February 13, the drought-affected area of ​​winter wheat in Hebei, Shanxi, Jiangsu, Anhui, Shandong, Henan, Shaanxi and Gansu provinces reached 108.24 million mu, of which 23.9 million mu was seriously affected. The drought-affected area of ​​winter wheat accounted for 39.6% of the planting area of ​​the eight provinces.
It is reported that the Central Meteorological Observatory predicts that in the next week, there will still be weak precipitation in the northern part of the winter wheat-affected areas, but the cumulative precipitation is generally less than 2 mm, and the meteorological drought will remain.
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