Vegetables in autumn and winter, especially after autumn, are prone to lack of calcium after winter. Experts suggest that pay attention to calcium, apply less chlorinated fertilizer. Falling ground temperature in autumn, the roots of vegetables will be gradually aging, and then affect the effective absorption of fertilizers by crops. At present, autumn delayed vegetables are in a period of vigorous growth, and special attention should be paid to the addition of fertilizers, especially calcium supplements. If the new parts of your home's vegetables, such as the buds and root hairs, have become stagnant and atrophied, the new leaves have become sticky, the new leaves have been growing in focus and are incomplete, and the top of the fruit has been sunken and dark brown in color. This is probably due to soil. The lack of calcium, because the soil itself is less calcium content; and high salt content, inhibit root absorption of water and nutrients. In addition, soil drought in autumn and winter will increase the concentration of soil solution and reduce water absorption in the roots, thus inhibiting the absorption of calcium. The fertilization of vegetables in autumn and winter should pay attention to science and should control the amount of fertilizer. It is not appropriate to use too much fertilizer at one time, especially with chlorinated fertilizers such as ammonium chloride and potassium chloride, and timely irrigation to prevent soil drought. At the same time, the leaves were sprayed with 0.3% to 0.5% calcium nitrate, once for 7 days, and sprayed 2 to 3 times. Tomatoes should be sprayed on the 2 or 3 leaves of the inflorescence when flowering. Chinese cabbage can be sprayed when it enters the ball stage.
The Dome Fixed Focus Camera/ Dome Fixed Focus Camera Indoor/ Dome Fixed Focus Webcam/ Fixed Focus Dome Webcam Night Vision/ IR Fixed Focus dome camera/ Fixed Focus Dome Camera 360°belongs to both the Fixed Focus Camera and the Dome Camera. So what is the Dome Camera?
In conclusion, compared with the Bullet Camera, the Dome Fixed Focus Camera also has many advantages, and we should choose the suitable type according to our appliying occassions.
Dome Fixed Focus Camera, Dome Fixed Focus Camera Indoor, Dome Fixed Focus Webcam, Fixed Focus Dome Webcam Night Vision, IR Fixed Focus dome camera, Fixed Focus Dome Camera 360° SHENZHEN SANAN TECHNOLOGY CO.,LTD , https://www.sanan-cctv.com
The Dome Camera, as the name implies, has the dome shape, and this dome shape is exactly the origin of this name "Dome camera". The Dome Camera is very suitable to be used in the office places and places with the high-grade decoration because of its small size and beautiful appearance. The Dome Camera is composed of a camera, an automatic iris manual zoom lens, a dome cover with the excellent sealing performance, and a precise camera mounting bracket; and its biggest feature is its exquisite design, beautiful appearance and easy installation.
With the security surveillance cameras applied extensively and deeply, in the pursuit of the convenient installation and debugging, and the full coordination with the the building environment(both beautiful and concealed), the Dome Camera is developed. Now the Dome Camera has been widely used in the TV surveillance projects.
Although the Dome Camera's composition has many similarities with the Bullet Camera, for example, both are fixed cameras, the Dome Camera has the delicate protective cover and mounting bracket, while the Bullet Camera needs to be equipped with a protective cover. The Dome Camera has a zoom lens with the small zoom range and the lens is not easy to replace; while the zoom range of the Bullet Camera depends on the selected lens, from several times to several times, and the lens replacement is very convenient. Dome cameras are mostly used in indoor small-scale monitoring occasions, such as the entrances and exits, passages, elevator cars, etc. of important parts; while the scope of Bullet Camera's application is very wide, according to the selection of different lenses, long-distance or wide-angle monitoring can be realized, and the application occasions are much wider than that of the Dome Camera.
With surveillance applications wider and wider; due to the convenience of installation and debugging, and the concealment of the surveillance, the dome camera has been widely applied to the indoor surveillance, such as the places with the ceiling and the rarely changing light. The Dome Camera technology also changes very quickly. For example, firstly, the camera shooting function of the Dome Camera is not different from the high-performance Bullet Camera, and the Dome Camera is miniaturized; Secondly, the lens of the Dome Camera is also automatic iris + manual zoom, and the zoom range gradually increases; Thirdly, the overall sealing performance of the Dome Camera is better, especially the lower dome, it is made thin and uniform, with better light transmittance and less light loss; Last but not the least, the mechanical design of the mounting bracket is more exquisite, which makes the adjustment of the camera position very convenient, and the three-dimensional adjustable universal joint bracket has appeared.
