First, the variety surveyed on the road found that the variety is not right, it is difficult to adapt to the summer high temperature, strong light and other environmental conditions, is one of the important factors that lead to the summer cabbage does not worry. Here, it is recommended to sow cabbages in summer and high-temperature, high-humidity, and pest-resistant early hybrids should be selected. The second is to strengthen fertilizer and water management data, indicating that Chinese cabbage grows fastest during the ball stage, absorbing the most water, absorbing 89% of the total absorption of nitrogen, phosphorus and potassium. If the fertilizer and water are insufficient and the growth is hindered, it will not be very good. ". It is recommended to apply base fertilizer (based on more than 10 square meters of farmyard manure + 200 kg of abundant source of calcium and magnesium fertilizer) and to promote its stalks during the Chinese cabbage cabbage-balling period, with about 50 pounds per acre of ash alfalfa calcium. Leaves grow. In addition, we must pay attention to the summer hot weather, evaporation of large amounts of water, need to keep enough water to keep the soil moist is appropriate. The third is to prevent pests from planting cabbage as soon as possible, which is vulnerable to diseases. It is recommended that it be prevented and prevented from affecting the normal growth of Chinese cabbage. Such as bacterial soft rot, can choose to use copper, can kill 3000, streptomycin and other agents to prevent and cure. For cabbage "dry heart" situation, it is recommended to pay attention to spray calcium fertilizer foliar to prevent. Such as aphids, cabbage caterpillars, etc. are relatively prone to occur in this period, and can be controlled with high-efficiency, safe, and low-toxicity insecticides such as imidacloprid or Kangkuan.
What is 4G PTZ WiFi Camera
Camera, also known as computer camera, computer eye and electronic eye, is a video input device, which is widely used in video conference, telemedicine and real-time monitoring. Ordinary people can also talk and communicate with each other through the camera on the network with video and voice. In addition, people can also use it for various popular digital images, video and audio processing.
Smart cameras are also called smart security cameras. Security is one of the main functions of smart cameras at present. When there is something happening at home, the camera will immediately push a message on the mobile phone to remind users. According to the statistics of the big data of Aurora, as of February 2019, the number of users of smart camera APP in the industry was 49.81 million, an increase of 44.9% over the same period last year. This shows that in the past year, people's demand for remote home and store watching has shown an upward trend, and smart cameras have also become a common household device.At present, the functions of smart cameras mainly include video monitoring, voice dialogue, security alarm and video review.
Video surveillance
Video surveillance is the core and basic function. The current intelligence is that the mainstream resolution of cameras is 1080P HD, which requires a high level of network. Most home cameras transmit data through WiFi, which is convenient to move. Some stores also install such cameras, which are mainly used to monitor the main points such as the cash register. This kind of camera that does not need to move can use the network cable, and the signal will be more stable.
Voice conversation
Most cameras on the market are equipped with the function of voice conversation. Users can directly have voice conversations with their families through the APP. Of course, although many devices on the market support this function, noise elimination, uneven echo and other situations still occur frequently and need to be improved continuously.
Security alarm
The security alarm function is mainly used to record vibration, special noise and other vibrations, and alarm through APP.
Video review
At present, smart cameras on the market all provide the function of video review, but most of them only provide the function of alarm review, that is, the video recorded after the alarm occurs can be reviewed, and the rest of the time can not be viewed, and it is a paid function. Few manufacturers can provide uninterrupted video retrieval function. The reason is simple: the cost of video storage server is too high. Video belongs to large flow files. If you want to achieve uninterrupted recording, storage and review, the cost will be many times or even dozens of times higher.
4G intelligent camera
The deployment of wired network is troublesome or the coverage of WIFI is limited. For example, security monitoring of mature commercial offices or new indoor and outdoor blank areas in residential areas, video monitoring is required for outdoor construction sites, and 4G intelligent cameras are required for the deployment of wired network is troublesome and scattered.
The 4G intelligent camera, also known as 4G camera and IPC, is mainly used for security video surveillance. Its feature is that the 4G communication module is built into the universal surveillance camera, allowing the camera to be directly connected to the network through the base stations of the three operators, breaking the limitations of the original deployment of network cables or WIFI connection, so as to achieve the purpose of remote monitoring.
Professional 4G PTZ WiFi Camera manufacturer is located in China, including Full Color Night Vision Two Camera,Smart Wifi Zoom Cctv ,360 Degree Ip Wireless Camera, etc.
4G PTZ WiFi Camera,Full Color Night Vision Two Camera,Smart Wifi Zoom Cctv ,360 Degree Ip Wireless Camera,PTZ Outdoor Camera
Shenzhen Fuvision Electronics Co., Ltd. , https://www.szsolarcamera.com