Broad bean is an integral part of Xiaochun planting crops in Ningzhou Town, Huaning County. It is currently the growing season of broad bean, and has entered the branching and flowering stages one after another. It is a crucial period for pest prevention and control to achieve high yields. In addition to the selection of resistance to broad bean diseases, In terms of harmful varieties, reasonable dense planting and pruning, good resistance to drought and drainage, increased application of phosphorus and potassium fertilizers, and enhanced resistance to broad bean, chemical control is also necessary. The main diseases are: 1, red spot disease: Mr. leaves a small red dot, gradually expanding into a round or oval lesions, severe parts become black, decay. Black sclerotia on the inner wall of the stalk. Chemical control: In the early stage of the disease, spray Bordeaux mixture 1:2:100. Later, every 10 days, spray 50% carbendazim 500 times 1 times, and spray 2-3 times. Practice has proved that the early spraying of the multi-bottle liquid is better than the spraying of carbendazim. After spraying carbendazim, the control effect is higher than Bordeaux mixture. 2. Rust: Rust spots appear on the leaves until the leaves are dry. When severe, the plants all died. Chemical control: Use 15% triadimefon 50 grams and spray 50-60 kilograms of water. Use 40-60 kg per mu. About 20 days after application, spray once more. Pay attention to applying pesticides at an early stage, otherwise, the effectiveness of control is poor. 3. Fusarium wilt disease: mainly black root lesions, short main roots, less lateral roots, yellowish leaf color, plants showing wilting, and the top stems and leaves wilt. Chemical control: In the early stage of disease, 50% thiophanate-methyl 500 times solution can be applied to the root. Medication 2-3 times, have better control effect. Root rot: It is a kind of fungal disease. After onset, the most obvious feature is that the leaf margins of the lower leaves of the plants turn black, and when the leaves are dark, the entire leaf becomes dark and scorch, which can reduce the production of broad beans by 30% to 50%. In terms of prevention and control, if the disease has already occurred, it can be timely mixed with phosphorous and potassium fertilizers or a ditch for burying in ash manure, and use 50% carbendazim or 70% thiophanate-methyl 1000-times liquid leaching, which has a good control effect. .
The Network CCTV Wireless Security Camera
Compared with wired cameras, wireless security cameras are less invasive to your home, so they are easier and faster to set up. No need to drill through walls or ceilings. Wireless cameras are also more flexible than wired systems because they are not as constrained as wired systems.
The biggest disadvantage of a wireless Camera System is that it is completely dependent on the strength of your Wi-Fi connection. Any interruption or weak signal can mean that you may lose connection to the system, resulting in the loss of the film, which can be critical
Best wireless outdoor security camera overall Ring Floodlight Cam Wired Plus.
Working principle of camera
The smart camera can also support remote monitoring. You can remotely view the real-time image of the camera through your mobile phone or computer. Users can view the image of the camera anytime, anywhere, to better protect the security of your home or office.
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The working principle of the camera is to reflect the light to the sensor, convert the signal captured by the sensor into a digital signal, and finally send it to the computer to display the image. Then the camera can capture the static and dynamic images in the picture.
The sensor of the camera is the most important part. It can capture light and convert it into electrical signals. There are many types of sensors, the most common are CCD and CMOS sensors, which can be used to capture images.
The internal circuit of the camera will convert the signal captured by the sensor into a digital signal and send it to the computer. The computer uses these signals to display images, or it can save images to the hard disk drive.
If the camera is not connected to the network, it will not be able to achieve real-time monitoring, but the camera will still work and save the pictures and videos taken. If we need to view, we can only remove the memory for viewing.