At 05:00 today, the temperature of the central and eastern regions of China continued to southward to the south of Guizhou, northwestern Guangxi and central Guangdong. The temperature in most of the south of the Yangtze River and northern part of China was generally below minus 1 to minus 3 °C, and parts of the eastern part of the Yangtze River reached zero. 4 to minus 5 ° C, Guangzhou 2.3 ° C. At 05:00 today, at 05 o'clock yesterday, the temperature in the south-central and southern parts of the south of the Yangtze River dropped by 1 to 4 °C, and the southern part of Fujian and Hainan fell by 4 to 7 °C; the temperature in most parts of the Yangtze River rose. Early frost will appear in places such as Jiangnan, South China and Guizhou. In the previous strong cold air impact process, the cooling range is large, the snowfall is wide and the intensity is strong; the lowest temperature in the local mountainous area is minus 5 °C, which easily causes the leaves of rapeseed and open vegetables to freeze, which is unfavorable for growth; due to the high snowfall intensity, The branches of fruit trees, economic forests, etc. are broken, and a few crops are collapsed. In addition, low temperatures have an adverse impact on livestock and aquaculture. As the saying goes, snow does not cool snow, cold winter crops, vegetables, flue-cured tobacco, etc. should be treated with straw, film covering, etc. to prevent cold and freeze, while adding hot phosphorus and potassium fertilizer, improve crop cold resistance, reduce cold (freezing) Harmful impact. The fruit trees can adopt the measures of whitening the tree trunk, covering the tree plate and cultivating the soil with trees to enhance the cold and frost resistance of the plants, and can be smoked and frozen at night; the fruits such as bananas and alfalfa can be bagged to prevent cold (freezing). Rape, field vegetables, green manure, citrus park timely clearing ditch drainage, preventing freezing damage caused by water accumulation in the field. The melons and vegetables and greenhouses cleaned up the snow, water and ice on the shed in time, and sealed and strengthened the greenhouse. The poultry and livestock pens are kept dry, and the padding, rice husk, hay and other litter are properly added. Warm food, warm water and appropriate feeding times are added to improve the cold resistance. In addition, timely cropping of crops after rain and snow weather is also a good way to ensure crop growth.
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