Autumn and winter planting fruit tree management
In the autumn and winter, new fruit trees should be strengthened in winter management. Keeping the soil moist, sufficient water can not only play a role in drought resistance and protection, but also prevent the drastic changes of soil moisture, so that the fruit trees are not affected by freezing, and secondly, the anti-freezing work must be done. The finished seedlings must be buried and cold-proof, and the thickness of the buried soil must be Not less than 10 cm. It can also be used to apply whitening agent or tying grass to prevent cold. If the tree is small, it is better to use the soil to prevent cold. If it can be topdressed and irrigated in early spring, it will greatly benefit the healthy growth of the sapling. In autumn, the prevention and control of fruit trees and pests should focus on the prevention and control of floating dust on the fruit trees. Prevention and treatment time: Spraying 1000 times of liquid dichlorvos plus 1000 times liquid lycopene plus new high-fat film 800 times liquid in the middle of October, and spraying again in the beginning of November, while applying the tree guard to prevent the frost in the trunk The overwintering bacteria are scattered and the tree is multiplied; and the generals in the whole park are sterilized and disinfected to reduce the source of the bacteria.
What is DVR Mini Camera
Dvr, which is called DigitalVideoRecorder in full, is a digital video recorder. Compared with traditional analog video recorders, dvr uses hard disk for recording, so it is often called hard disk recorder, also called DVR. It is a set of computer system for image computing, storage and processing. It has the functions of long-time video recording, recording, remote monitoring and control of images/voice and dynamic frames. DVR integrates five functions, including video recorder, picture splitter, PTZ lens control, alarm control, and network transmission. One device can replace a large number of devices in the analog monitoring system, Moreover, it has gradually gained advantages and popularity in terms of price.
The function of DVR, with the increase of various voltage sensitive loads in the distribution network, puts forward higher requirements for power quality. However, due to system accidents in the power system, the voltage flicker, drop and other disturbances caused by the startup and shutdown of large equipment, lightning stroke and other principles are unavoidable. Moreover, in the current power grid, the ability to quickly restore power supply after power interruption is far from meeting the requirements of many sensitive loads. Therefore, it is necessary to provide users with stable and uninterrupted high-quality power when interference occurs. Dynamic voltage recovery (DVR) is the choice to solve the above problems today. DVR is connected in series to the feeder line that requires high-quality power to realize dynamic real-time voltage compensation for the line, so that the load end can get the desired high-quality power, and ensure the normal and uninterrupted operation of sensitive user equipment.
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The "digitalization" of DVR means that compression and storage technology is aimed at digital signals, rather than directly transmitting digitally encoded video images. Therefore, DVR must be deployed near the analog camera.