ETR has independently developed an integrated vacuum pump unit composed of a water-ring vacuum pump, a gas-water separator, a vacuum solenoid valve, pipe fittings and an electrical control system. It is a simple, safe and reliable device that continuously serves the wards all day long, without occupying the ward space. The negative pressure is sourced from the vacuum pump unit.
Cabinet Vacuum Suction Unit Cabinet Vacuum Suction Unit,Central Suction Station,Negative Pressure Suction Unit,Negative Pressure Suction Station Hunan Eter Electronic Medical Project Stock Co., Ltd. , https://www.eter-tech.com
Prevention and cure of diseases and pests of radish vegetables in leaves
The carrot radish produced in the radish genus of the radish is generally only 7 to 14 days due to its short growth period. Therefore, the use of chemical pesticides is banned in the production, and only biological control methods (integrated agricultural control) can be adopted. For example, silver-gray shading nets are used in all weather conditions. Coverage, etc. The "drum radish dish" has a longer growth period (20 to 40 days), especially in the high-temperature and dry season, where serious pests occur, such as aphids and cabbage caterpillars. When chemical pesticides are used as a last resort, pesticides such as dichlorvos, phoxim, cypermethrin, deltamethrin, and fenvalerate should be used about 10 days before they are listed, and they should be used strictly according to the standards for the use of pesticides for pollution-free vegetables. Specific methods can be found in Chinese Cabbage and Chinese Cabbage. It is best to use biological control methods - silver-gray shade nets cover all weather.