In fact, many flower friends asked before: Will the winter of the month be frozen? Do you want to move to the house, especially the flower friends in the north, because of the cold weather, you are more worried about the wintering of the rose. In fact, rose flowers are very cold-resistant, most of the rose can withstand -15 ° C low temperature, and some rose can withstand -20 ° C low temperature. Therefore, the flower friends in the southern and central regions do not have to worry about the problem of wintering of the rose flowers. It is enough to go outdoors in winter. In the north, as long as the winter temperature is not lower than -15 °C, the rose can be used for outdoor wintering, and the ground planting does not need to be cold-proof. If you are a potted plant, it is recommended to plant it in a pot with a flower pot or move it into a cold room without heating. If it is a relatively northerly region such as Heilongjiang, and the winter temperature is below -20 °C, then it is necessary to do cold-proof measures for the rose. The potted plants should be moved into a cold room with a temperature not lower than -10 °C. If it is planted in the ground, the branches should be sorted and bundled in winter, and then covered with straw, plastic film, etc. Windproof, strong winds will make the branches of the rose quickly lose water and wither. In fact, in most areas of China, planting roses do not need to worry about wintering, and autumn is also a good season for planting, which can make the rose have sufficient time for planting, and spring can explode. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone WiFi Solar Camera,Solar Ip Camera,Smart Surveillance Cctv 4G,Solar CCTV Camera System,Night Vision Infrared Solar Camera Shenzhen Fuvision Electronics Co., Ltd. , https://www.outdoorsolarcamera.com
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What problems should we pay attention to when using solar energy for power supply?
1. The whole day sunshine time of monitoring points along the expressway shall be considered first. As the main energy of the power supply system comes from sunlight, the sunshine exposure time must be considered, which is particularly prominent in mountainous areas where there is little sunshine, but not in plain areas.
2. Working power, working voltage and current of monitoring facilities along the expressway. After considering the power of the whole load, we can choose the solar panel that is more suitable for the long-term operation of the equipment.
3. If the battery discharge cannot make the monitoring equipment work for a long time, the monitoring system will be paralyzed in the rainy season, but the expressway is prone to accidents in the rainy season.
4. The conversion rate of solar cells is low. At present, the conversion rate of solar cell power supply is only about 20%, that is to say, if the silicon solar cell is spread over a square meter, 100~200W of power can be obtained, which is obviously not enough to meet the long-term operation of the monitoring equipment. Of course, with the development of technology and the improvement of the quality of crystalline silicon cells, we can obtain more power resources in a smaller area in the near future.