Since the beginning of this year, rain and snow have occurred in most parts of southern China. Freezing rain has occurred in some areas such as Guizhou, Hunan and Chongqing, which has a certain impact on agricultural production and people's lives. According to the forecast of the Central Meteorological Observatory, due to a new cold air, today (8th to 10th), the temperature in most parts of central and eastern China will drop by 4~8°C, and the temperature in some areas will reach above 10°C, Inner Mongolia, Northeast, North China, Huanghuai and other places are accompanied by 4 to 6 northerly winds. There is still freezing rain in parts of western Guizhou and northeastern Yunnan. A large range of persistent freezing rain will have a more serious impact on agricultural production. Relevant departments in various localities need to attach great importance to strengthening measures to prevent cold and freeze, and ensure the safety of agricultural and livestock production. To this end, the experts give the following defense recommendations:
For the vegetables to be matured, it is necessary to promptly collect and remove snow, strengthen the production facilities such as vegetable greenhouses, and take measures such as field smoke to reduce the effects of freezing. If it is being planted, it should be covered by mulch film; if the damage is caused by cold (frozen) damage, it is necessary to seize the favorable opportunity for the weather to recover, grasp the seedling replanting, and adopt the hot-acting quick-acting fertilizer and spray the foliar fertilizer. Measures such as field smoked tobacco and gully irrigation can promote the restoration of growth; after freezing and dead seedlings are serious, after the cold current, the land should be grasped, the time should be replanted and the low-temperature resistant vegetables should be replanted, and production should be resumed as soon as possible to ensure market supply. For the warmth of the solanaceous fruits, melons, vegetables, etc., should be covered with small arch sheds, cultivated facilities, during the day should pay attention to strengthen the ventilation of the shed, do a good job at night. If it is in the emergence stage, it may delay the film rupture and increase the coverage of straw. If there are conditions, it can take cold-proof measures such as double-layer small arch shed. Affected by low temperature, the leaves are browned, and after the temperature rises, the hot quick-acting fertilizer should be applied in time.
For fruit trees, it is necessary to cultivate the loose soil in the frozen orchard to increase the soil temperature, maintain the soil's good permeability, promote the early recovery of the root system, and provide the nutrient with the application of the decomposed organic fertilizer; Tree potential recovery; timely pruning, cultivating good canopy structure; timely irrigation, timely improvement of orchard climate;
Animal husbandry is cold and frostproof. Instruct the farms (households) to clear the frozen snow in time, strengthen and repair the dangerous houses that have been crushed by snow, do a good job in the management of livestock and poultry after the disaster, and improve the production capacity of livestock and poultry; The harmless treatment of dead livestock and poultry; strengthen the monitoring and remission of the epidemic, and promptly eliminate the hidden dangers of the epidemic.
Fishery farming. Timely inspection and reinforcement of breeding facilities, removal of snow and ice on aquaculture water bodies and management facilities, repair of damaged facilities as soon as possible; timely sale and sale of commercial fish, removal of dead fish in aquaculture water, avoiding pollution of water quality and disease Strengthen inspections and disease monitoring to prevent outbreaks of aquatic animals after the weather has warmed up.
At the same time, it is necessary to build a water storage tank and store it at any time. The water supply pipeline is wrapped with thermal insulation material to prevent the water pipe from freezing and cracking. To ensure people's normal life.
Related links: Freezing rain is rainwater with a temperature below 0 °C. The initial state of the freezing rain is actually snow, when the air temperature is below 0 °C. When it drops to about 3,000 meters, the air layer that has passed the temperature above 0 °C melts into raindrops. Then it descends to the ground. When it encounters air with a temperature lower than 0 °C, the water droplets will not be converted into snowflakes, but when they are attached to the object, they will freeze into a smooth, crystal-clear layer of ice shell.
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