First, when encountering severe cold
In the case of severe cold, the following methods can be used for emergency response. One is multi-layer cover, which can be covered with a film on the grass, or can be shed in the shed to increase the heat preservation effect. Second, the cold ditch is dug outside the shed. It can increase the temperature in the shed by 2-3 degrees. Do not water the water, the water temperature in the winter is too low, when the cold weather changes, the shed will not see light, the shed temperature is low, the ground temperature is difficult to recover, it will cause the rotten roots of the vegetables, the dead roots or the roots and the spread of various diseases. .
Second, when encountering yin
If you encounter a cloudy weather, as long as the temperature is not too low, you must uncover the straw curtain. If there is a short time to expose the sun, the temperature inside the shed will rise. Reflective curtains are placed on the back wall of the greenhouse, which also plays a role in adding light and warming on cloudy days. When there are many cloudy days in winter, the mulch film should be covered early, which can increase the ground temperature and reduce the occurrence of low temperature freezing damage. The temperature in the winter greenhouse should be kept above 12 °C. When the temperature is too low, temperature heating measures such as electric heating and coal furnace heating can be adopted.
Third, when encountering snowfall
It is not necessary to cover the grass when it is snowing during the day. After the snow stops, the snow on the shed is swept away. After the cover is covered in the afternoon, a film is placed on the grass to strengthen the insulation. During the snowfall at night, it is necessary to sweep the snow in time after the snow stops, keep the grass dry, and let the seedlings see the light when the temperature permits. After a continuous cloudy and snowy weather, it should turn sharply. It should be pulled first or first one third, and observe the change of seedlings. When it is found to be wilting, cover the grasshopper immediately, then pull it back after recovery to prevent "flash shed". ". If it has caused wilting, it should be immediately sprayed on the leaves to relieve the stomata, so as to close the stomata of the leaves and weaken the transpiration of the vegetables, which is beneficial to the rapid change of the wilting state and return to normal.
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There is no doubt that solar monitoring has brought great convenience to people. It saves a lot of manpower and material resources without having to stick to the post for 24 hours as before. Not to mention that the current surveillance cameras have the function of motion detection. As long as someone enters a certain range, it will automatically alarm and capture the scene. What is the function of the solar monitoring system?
1. Solar panel: The solar panel is an important part of the mobile phone software of the solar power generation system, and also a part of the practical value of the mobile phone software of the solar power generation system. Its function is to convert the professional ability of radioactive substances in natural light into electric energy, or send them to storage batteries, or promote load work.
2. Solar controller: The solar controller is used to control the operation of mobile phone software in all systems, and has the functions of overcharge protection and overcharge maintenance for the battery. In areas with large temperature difference, the qualified controller shall also have the function of temperature compensation. In the mobile phone software of the solar road lamp system, there must be light control switch and time control solar road lamp operation.
3. Battery: generally valve controlled maintenance free lead-acid battery. In the mobile phone software of small and medium-sized systems, in cold weather areas, a solar gel battery needs to be configured, which can be used at low temperatures, with high efficiency and is not vulnerable to major damage. Its function is to store the electric energy of the solar panel when the sun shines, and then release it under certain conditions.
4. Variable frequency power supply: split wave type and sine wave type. In order to provide power for 220VAC electrical products, it is necessary to convert the DC stabilized voltage power supply in the solar power generation system software into AC circuit energy, so DC AC variable frequency power supply is required.
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