The Central Meteorological Observatory continued to issue cold wave warnings today. Strong cold air is expected to continue to affect southern China. Linyi Fertilizer Network Copyright
At present, the northern part of China is affected by the strong cold air, and the cold air that affects the north of China will continue to go south and cause a strong cooling in the south. It is estimated that from 08:00 on the 25th to 08:00 on the 27th, the southeastern part of the Northeast, the south of North China, the southwestern part of Shaanxi, the Huanghuai, the Jianghuai, the Jianghan, the south of the Yangtze River, the southern part of South China, and the eastern part of the southwestern region will have a temperature drop of 6-8 °C. The temperature drop in some areas of eastern Huai, eastern Jianghuai, eastern Jiangnan, southern Jianghan, eastern Guizhou, western Hunan and other places can reach 10 °C; most of the above areas have 4 to 6 northerly winds. In addition, cold air will cause precipitation in the southern region. It is expected that from 08:00 to 26:00 on the 25th, the southwestern Shaanxi, western Henan, western Hubei, southern Jiangnan, eastern and western South China, and most of the southwestern regions are small. In the rain or showers. Linyi Fertilizer Network Copyright
  Cold air south will cause significant cooling and windy weather in southern China in the next few days. It is hoped that all parts of the south will be able to keep warm and windproof crops. Recommendation: Linyi Fertilizer Network Copyright
1. The rapeseed producing areas in the Yangtze River Basin should transplant rapeseed in a timely manner, strengthen field management, and adopt measures such as smoking and covering to prevent rapeseed seedlings from being exposed to high winds and low temperature. Linyi Fertilizer Network Copyright
2. The southern part of the country should do the reinforcement and heat preservation work of the greenhouse in the greenhouse to prevent the loss caused by the collapse of the wind; fruit trees, economic seedlings, etc. should pay attention to support the lodging and breakage. Linyi Fertilizer Network Copyright
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Venous Cannula
Venous cannula is also a deep venous puncture catheter. The method is to select the appropriate puncture site and insert the needle under the skin, and insert the needle with negative pressure until the dark red blood is absorbed, indicating that the needle has entered the vein, and the guide wire is inserted. Withdraw the puncture needle to leave the guide wire in the blood vessel, and then insert the venous catheter that needs to be indwelled along the guide wire, then exit the guide wire, inject diluted heparin saline and fix the catheter, the deep venous catheterization is completed. The veins for puncture and catheterization are usually selected clinically, including the subclavian vein, internal jugular vein, and femoral vein. After the puncture catheter is indwelled, attention must be paid to the care of the puncture site to avoid infection with thrombus or catheter falling off.
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