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. venous cannulation,best veins for cannulation,venous cannulation set,venous cannulation technique Yong Yue Medical Technology(Kunshan) Co.,Ltd , https://www.yongyuecultureplate.com
The vegetable meal (1) uses the principle that the aphid has strong tendency to yellow, and can set yellow plate in the field, apply oil or other viscous agent to trap aphids; use the principle that the aphid has negative tendency to silver gray, and hang in the field. Or cover the silver-gray film (5 kg per mu film), or hang silver-gray film strips around the greenhouse (10-15 cm wide, 1.5 kg per mu film), can rid the mites, can also use silver gray shade net The insect net covers the insects. (2) It is advisable to control the mites as soon as possible and control them in the stage of spotting. Generally, 70% Emerald water dispersible granules 20000-30000 times solution, or 20% Kangfudu suspension agent 4000 times solution, or 10% thousand red wettable powder 2500 times solution, or 10% å¯ å¯ wettability can be selected. Powder 2500 times solution, or 25% Akthai water-dispersible granules 8000 times solution, or 10% Dagong WP 2500 times solution, or 3.5% Ruidan emulsifiable concentrate 800-1000 times solution, or 5% Adak 1500-2000 times of wettable powder, or 1500-2000 times of 1% insecticidal emulsifiable concentrate, or 1250-1500 times of 0.6% chlorpyrifos EC. When spraying, the nozzle should be upwards, with the focus on the opposite side of the blade.
In the beginning and the beginning of adult larvae, 猿å¶ç”²,黄守瓜, 5% Regent suspension 2000 times solution, or 2.5% enemy killing emulsifier 3000 times solution, or 48% lesper emulsifiable concentrate 1000 times solution, Or 40% Xinnongbao emulsifiable oil 1000 times liquid, or 55% agricultural frog emulsifiable oil 1500 times liquid, or 52.25% agricultural land emulsifiable oil 1500 times liquid, or 10% emulsified emulsifiable oil 1500-2000 times liquid, or 2.5% Tiannuo No. 1 emulsifiable concentrate 2000-3000 times liquid, or 2.5% Good Leo emulsifiable concentrate 2000-3000 times liquid, or 2.5% Da Kang emulsifiable concentrate 2000-3000 times liquid, or 20% green Defu microemulsion 600- 800 times liquid, or 3.3% butyl emulsifiable oil 1000 times liquid and other alternating spray control.
Yellow stripe (1) lays a mulch to prevent adult eggs from laying on the roots of the crop. (2) Prevention and treatment of adults, 5% Regent suspension 2000 times solution, or 2.5% enemy killing emulsifier 3000 times solution, or 3.5% Ruidan emulsifiable concentrate 800-1000 times solution, or 25% wide Treatment of milk oil 600-800 times solution, or 48% lesbian emulsifiable oil 1000 times solution, or 40% Xinnongbao emulsifiable oil 1000 times solution, or 55% agricultural frog emulsifiable concentrate 1500 times solution, or 52.25% agricultural land emulsifiable concentrate 1500 Large area spray such as liquid. The latter four kinds of agents can also be used for root larvae to control yellow larvae, and 150-250 ml per hole can kill larvae near the rhizosphere. In addition, the prevention and control of larvae can also be used 3% of Zhengdan granules or 3% of Guardian granules 3-4 kg, or 5% of Zidan granules 1.5-3 kg, in the near rhizosphere strips or points Shi.
Adults of Spodoptera litura and Spodoptera exigua can be trapped by electronic moth or black light or sexual attractant or sweet and sour liquid. The larvae control period should be controlled before the egg hatching peak to the 3rd instar larvae. Generally, it is recommended to apply the medicine after the sun goes down in the evening. Use the foot liquid to evenly spray the leaf surface and the leaf back. The medicine should be sprayed directly onto the insect body and food. On, touch and kill, stomach poisoning, and enhance the effect of poisoning. At the peak of egg hatching, 5% calorie emulsifiable concentrate 2000-2500 times liquid spray can be used for prevention and control; for the younger larvae, 1% Wakeda emulsifiable concentrate 3000-5000 times liquid or 24% perfect suspending agent 2000-2500 times liquid can be selected. , or 15% suspending agent 3000-3500 times liquid, or 10% to remove the suspension agent 2000-2500 times liquid, or the Austrian green No. 1 suspension agent 800-1200 times liquid and other alternating spray control.
Current melon and fruit disease pest control
Plutella xylostella (1) Plutella xylostella has phototaxis. In the adult stage, an electronic moth-killing lamp is set per hectare to trap a large number of Plutella xylostella and reduce the source of insects. (2) Adults can also use the Plutella xylostella sex attractant to trap adult worms, and 2-3 traps per acre. (3) In the peak of the hatching of Plutella xylostella, 5% of the dead gram of emulsifiable concentrate can be used for prevention and control; in the peak period of young larvae, 2.5% of the fungus suspension can be used 1000-1500 times, or 5% sharp 2500 times of special suspension agent, or 10% of the suspension agent 2000-2500 times liquid and other alternating spray control. Plutella xylostella perennial, short development period, many generations, frequent use of pesticides, prevention of biological control during prevention, reducing dependence on chemical pesticides, chemical pesticides must be used alternately or in combination, avoid long-term single use A certain type of chemical pesticide to avoid or delay the development of resistance.
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