Entering winter, the temperature is getting lower and lower, coupled with the increase in low-light weather such as continuous rainy, snowy and hazy days, the humidity in the shed is relatively high, so what should be paid attention to in the management of the shed under low-temperature and low-light weather? Vegetable farmers should pay attention to the following four points.

During the time when the temperature vegetable growers enter the winter, the night temperature cannot be controlled too high. According to the weather conditions, try to put grass curtains in the afternoon and pull the grass curtains in the morning to maintain the temperature difference between day and night and provide as much light as possible for the vegetables.

Humidity In the current weather conditions, the humidity in the shed is often relatively high. Therefore, it is necessary to ventilate as much as possible and ventilate as often as possible while maintaining the temperature in the shed, so as to reduce the humidity in the shed as much as possible. In addition, watering in winter should try to choose drip irrigation or micro-spraying methods to avoid flooding with floods. Small water should be poured in sheds without drip irrigation equipment, and the soil humidity in the shed should be controlled at 50% to 70%.

Pruning winter has more rainy, snowy and hazy days. Therefore, when pruning and cutting branches and other agricultural operations, try to avoid this kind of weather, and choose to do it in a period of high temperature around noon on a sunny day to facilitate wound healing. If the operation must be carried out on a hazy day such as a low-light day, wait for the humidity in the shed to drop before proceeding, and spray the medicine after the operation to prevent the occurrence of diseases.

Spraying is currently a time when many diseases are prone to occur, and it is necessary to spray regularly to prevent the occurrence of *** disease early. Vegetable farmers can spray preventive agents such as chlorothalonil, thiophanate methyl, and kasugamycin alternately according to the weather conditions before the continuous rainy and snowy days, and add crustaceans when spraying. Vegetarian and amino acid foliar fertilizers can improve plant resistance.

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Virus Sampling Tube

There are mainly the following parts: 1. Sampling swab with disposable sterile plastic rod/rayon head 2. Sterile sampling tube containing 3ml of virus maintenance solution (gentamicin and amphotericin B are selected to better inhibit the fungus in the sample. Avoid the human sensitization reaction that may be caused by penicillin in the traditional sampling solution.) In addition, there are additional parts such as a tongue depressor, a biosafety bag, etc. Intended to use 1. It is used for monitoring and sampling of infectious pathogenic microorganisms by disease control departments and clinical departments. It is suitable for sampling of influenza virus (common influenza, highly pathogenic avian influenza, H1N1 influenza virus, etc.), hand, foot and mouth virus and other types of viruses. It is also used for sampling of Mycoplasma, Chlamydia, Ureaplasma, etc. 2. It is used to transport nasopharyngeal swab samples or tissue samples from specific parts from the sampling site to the testing laboratory for PCR extraction and testing. 3. It is used to preserve nasopharyngeal swab samples or tissue samples from specific parts for necessary cell culture. The virus sampling tubes are loaded with infectious substances, and some are even highly pathogenic substances. Therefore, the requirements for packaging containers are very strict, and three requirements must be met at the same time: 1. The safety of transportation. Ensure that the sample does not leak during transportation. Sampling tubes that comply with WHO regulations and biosafety regulations. 2. The security of preservation. Ensure that the sample does not leak during storage. Sampling tubes that comply with WHO regulations and biosafety regulations. 3. The validity of the sample. Make sure that the sampling tube itself will not have a toxic effect on the sample.

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