In mid-February cold air activities are more frequent to strengthen farmland water and fertilizer management
It is expected that in the next 10 days (February 12-21), cold air activity in the central and eastern regions of China will be more frequent, and will be affected by weak cold air from the 12th to the 13th. Temperatures in the eastern part of the northwest, North China, Huanghuai, Jianghuai, Jiangnan and South China will be affected. The temperature dropped by 4 to 8°C in the north of the Huaihe River in the Qinling Mountains. The temperature in parts of the eastern and northeastern Inner Mongolia fell by 8 to 8°C. 10°C; Wind cooling is not conducive to facility agriculture and animal husbandry production, and it is also not conducive to irrigation of dry winter wheat fields in Huanghuai in North China. Before and after the 12th, 16th, and 18th, there were weak precipitation processes in the dry areas of North China and Huanghuai winter wheat. The rainfall was 1 to 3 millimeters, which was beneficial to the increase of soil moisture, but had limited effect on further drought relief. Rainy (snowy) weather in most of the southwestern region, south of the Yangtze River, and southern China, rainfall is 5 to 15 mm, 20 to 40 mm in parts of southern and northern parts of southern China, and low-temperature rains and snows cause soil in some areas to continue Wet, not conducive to crop growth. Suggest: 2. The southern region should strengthen farmland water and fertilizer management, and pay attention to the adverse effects of low-temperature rain and snow on crops. Winter wheat, oilseed rape and other crops should be increased organic fertilizer in appropriate amounts to increase soil temperature, enhance cold resistance, and promote spring growth; Southern South China needs to do good rice breeding and field management, and cultivate strong seedlings.
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1. North China's winter wheat will gradually enter the returning green period, and all localities must do a good job of returning to the green field management according to the conditions of the plot. Dry areas should be scientifically irrigated, actively develop water sources, pay attention to avoid cold air, perform sprinkler irrigation or small-water irrigation when the average daily temperature exceeds 3°C, and take active measures in dry areas where temperatures are not suitable for irrigation or irrigation conditions. Scratching, spreading farmyard manure or straw mulching and other measures to increase temperature and protect cropland, promote the successful return of green wheat to winter growth, and fewer tillers or late weak wheat fields, should be applied to return green manure while pouring well, and promote the transformation and upgrading of the seedlings. 