With the decrease of outside temperature and the increase of closed time, many vegetable farmers open water outlets after watering vegetables to reduce the humidity in the greenhouse. “Recently, the weather has been bad, and gray molds have begun to form in the shelters. This is not. In order to release the air quickly, I let the wind out prematurely, or else the gray mold will become more and more severe.†The reporter was in Shouguang City. When Sun Jiaji’s street was interviewed by Diaoyutai Village, the master Sun who had just finished pouring water said.
Indeed, this method can reduce the humidity in the shelter, but the effect is not obvious, but its drawbacks can not be ignored: After the water is poured, the ground temperature in the shed is shown to be a decreasing trend. If water is blown out after the watering, the temperature in the shed is Falling is not conducive to the rise of the ground temperature. Roots that are exposed to low ground temperatures for a long period of time are prone to root thinning or root damage. The ability to absorb fertilizer and water is reduced, and the growth of vegetables is severely hindered.
Therefore, the reporter recommended that vegetable farmers should first raise temperature after watering, in order to increase the temperature of the soil, promote root growth, and then exhale and release moisture. This will not only facilitate the improvement of the ground temperature, but also greatly reduce the humidity in the greenhouse and facilitate the discharge of moisture in the greenhouse. In addition, when the temperature is relatively low, the relative air content of the air is large. At this time, it is difficult for the ventilation to effectively reduce the humidity in the booth. Therefore, ventilation should not be performed immediately after the water is poured. Under normal circumstances, like solanaceous vegetables, when the temperature reaches 30-32 °C in the watering shed, the air is best when the temperature of the soil and air in the shed is raised. The temperature in the shed is high, and the relative humidity is natural. It will be small. If you let it go at this time, the water vapor will be drained quickly. Since the ground temperature was brought up in advance, after the release of the wind, the root system also got the temperature required for normal growth. This would serve two purposes, why not?
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These test kits are new to the market and rely on the detection of viral proteins in swab samples They consist of monoclonal antibodies specific for the viral antigens and results are seen by the naked eye by way of chromatographic particles. There have only been a few of these tests commercialized and normally require a high viral count to work effectively. In the first few months of the pandemic some national health authorities questioned the reliability of these tests, as they usually require a higher viral count that qPCR to show positive. Therefore, false-negatives can occur.
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