This week, the main agricultural activities in parts of South China, sugar cane, autumn corn, autumn soybeans, sweet potatoes and other harvest, citrus, banana and other fruit picking in parts of southern China; vegetable, potato, fresh corn, etc. in parts of southern China. In the field of winter wheat, rapeseed, green manure and other autumn sowing crops, open field vegetables, facility agriculture and sugarcane, fruit and other areas in southern China, water and fertilizer management and pest control; farmland water conservancy infrastructure and local disaster relief, disaster relief.
This week's focus will be based on the characteristics of the previous weather and climate changes and current agricultural conditions and future weather changes.
1. Last week, there was no precipitation in the central and southern parts of North China, Huanghuai, and the eastern part of the northwestern region. The temperature was high and windy, and the meteorological drought was still developing. It is predicted that there will be no obvious rain (snow) weather in most of the wheat areas before the weekend, and the meteorological drought will continue. Therefore, scientific field management should be carried out according to the conditions of the seedlings, lyrics, and temperature (degrees). If the growth has been stopped or there is no irrigation water source, measures such as soil cultivation, repression, heat-heating fertilizer or covering can be adopted to ensure the temperature increase and avoid drought or freezing damage. In the wheat fields (especially weak seedlings) that have water source conditions and have not stopped growing, winter irrigation (especially severely dry plots) can be carried out in time when the daily average temperature drops below 5 degrees Celsius (when the night is frozen), and timely suppression after watering , paddling, increase the insulation, promote wheat rooting, tillering, to achieve strong wintering. Wang Miao should not use winter ploughing and repression to promote its rooting and inhibit the growth of its aerial parts too fast, so as to improve the ability to resist low temperature freezing damage;
2. It is predicted that due to the continued eastward and southward influence of strong cold air in the latter part of last week, the temperature in most parts of the Zhou Dynasty will drop by 6-10 degrees Celsius, including parts of southern China, eastern Huanghuai, and southern part of Northeast China. The temperature drop in the region can reach 12-16 degrees Celsius; there are 5-7 northerly winds in the middle and lower reaches of the Yangtze River and most of the north, and some areas in western Inner Mongolia have dust; the northeastern part of Inner Mongolia and the central and eastern parts of Northeast China are small. To the snow or sleet. In the middle and early weeks, there was another cold air affecting Xinjiang, and the rapid eastward movement affected the northern region. The northwestern part of the northwest, the north-central part of North China, and the northeastern part of the northeast have 4-6 winds. Some parts of western Gansu and western Inner Mongolia have sand. Dust; parts of the eastern and northeastern parts of North China have small to medium snow and partial heavy snow. In the latter part of the week, there was a strong cold air affecting China, and there was a cool and windy weather. The central and eastern regions cooled by 6-9 degrees Celsius, and the local area cooled by more than 10 degrees Celsius. In some parts of North China and Northeast China, there were small to medium snow. . Therefore, facilities such as greenhouses, livestock and poultry houses should continue to be well protected against wind and snow. After snow, clean the snow on the sheds to avoid collapse, damage, cold and heat preservation caused by strong winds or snow, and ensure the vegetables. Strong growth of flowers, flowers, etc., to avoid freezing damage to livestock, poultry and aquatic products. After the snow, the temperature is low. In some areas, it is necessary to prevent the adverse effects of traffic caused by snow and frozen roads. The pastoral area should continue to do a good job in the reserve, transportation and livestock grazing of forage materials, the snow, dust and cooling measures for the transition;
3. It is predicted that the precipitation in the eastern part of the southwestern region, the southern part of the Yangtze River, the south of the Yangtze River, the south of the Yangtze River, and the south of China will be 10-30 mm. The precipitation in some areas of the southwestern part of the southwest and the south of the Yangtze River will reach 40-60 mm. In the late part of the week (in the eastern part of the southwestern part of the country, there were also rainy and snowy weather in the early middle of the week); due to the influence of cold air, the winds in most of the above areas will have about 4 grades, and some areas will have initial frost. While doing good work on wind and frost prevention, we should take advantage of the favorable opportunity of rainfall increase, expand the area of ​​autumn and winter, strengthen the field water and fertilizer management of autumn and winter crops such as rapeseed, winter wheat, green manure and vegetables, check seedlings, make up seedlings, and cultivate Cultivate soil, chase fertility (referring to rapeseed, etc.), control pests and diseases, and ensure the healthy growth of crops. For some areas with large rainfall, it is necessary to do a good job of clearing the ditch and cultivating the ditch, avoiding the rapeseed, green manure, etc., and continue to do the interception of surface runoff after the rain, increase the mountain pond, reservoir, water Water storage capacity such as sputum and winter paddy fields. The land that is still lacking should be watered in time to ensure the seedlings grow robustly. South China and southern Yunnan should also use rainfall gaps and harvest sugar cane, autumn corn, autumn soybeans, sweet potatoes and picking ripe citrus, bananas and other fruits and drying late rice to ensure increased production and income;
4. It is predicted that due to the influence of cold air, the wind power in the eastern and southern sea areas in the week is generally 6-8, and some sea areas have a gust of 9-10. Ships engaged in navigation and operation in the above-mentioned sea areas should be prepared to prevent casualties and property losses;
5. From the climatic law, the autumn and winter seasons decrease with the decrease of precipitation, the air humidity decreases, the wind increases, and the moisture content of the litter and leaves in forests and pastures decreases, resulting in the fire level of forests and grasslands. High. According to forecasts, some areas in the central and southern parts of North China, Huanghuai and South China, Southwest China, and Northwest China have fine weather, less rainfall and greater winds. Therefore, the fire source management of forest areas and pastures should be strengthened to prevent fires from occurring;
6. It is predicted that the cold air activity will be frequent during the week, the temperature will fluctuate greatly, and the wind will be windy and rainy in some areas. Farmers and herdsmen friends should add clothing according to weather changes, prevent cold, keep warm, prevent colds and other diseases; farmers and herdsmen who use coal to heat in the north should pay attention to indoor ventilation and prevent gas poisoning.
This week's weather conditions this week (December 6-12, 2010), cold air activities are frequent, strong, and the scope of influence is wide, and the temperature fluctuations in most areas vary greatly; North China, Northeast China, Huanghuai, Jianghuai, Jiangnan The average temperature in the surrounding areas is about 1 degree Celsius lower than normal, and the local areas in the eastern and northeastern parts of North China are 2-3 degrees Celsius lower; the rest of China has normal temperatures. Some parts of Xinjiang and the eastern and northeastern parts of North China will have snowfall weather; some areas in the southwestern part of the southwest, south of the Yangtze River, south of the Yangtze River, South China and southern China have small to moderate rain or showers, and some areas have heavy rain. Affected by cold air, winds will be 4-6 in most areas, 6-8 in the east and south, and 9-10 in the gust.
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