Strawberry snake eye disease, also known as strawberry white spot disease, leaf spot disease, mainly damage the leaves, causing lesions on the old leaves, also infect the petiole, pedicel, calyx, stolons and fruit stems. Mild morbidity began before flowering and berry harvest occurred in large quantities. The leaves suffered small purple-red spots and later gradually expanded into round lesions with a diameter of 3 to 5 mm. The center was brown, then turned gray, and the edges were reddish-brown with a slightly thin ring-shaped pattern, resembling a snake-eye pattern. When the lesions occur for a long time, they often grow into large spots until the leaves die. Chemical control Spray 200 times more Bordeaux mixture or 500 times solution of mancozeb, or 30% of green deconcentrate suspension 400 times, or 14% of solution of ammonia hydrocortisone 300 times, or 77% Can kill WP 500 times, or 75% chlorothalonil wettable powder 500 times, or 70% thiophanate-methyl WP 1000 times liquid agent, or 50% carbendazim 1000 times, etc., sprayed once every 10 days, a total of 2 or 3 times. Stop spraying before 10 days before harvesting. 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.outdoorsolarcameras.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.