Apple Garden soil and water management in late August
Water storage and soil conservation is the key point for soil and fertilizer management in August. The effective method is to change the cultivation of cultivated land to cover cultivation of raw grass. After the rain, we planted grass. White clover can be sown, and rape can be sown. The characteristics of large growth of rapeseed can be used to loosen the soil and increase organic matter, but it must be cast and covered after flowering. Secondly, weeds are covered with weeds in the garden. The weeds are not allowed to grow by weeds. When the grass height is 30 cm, we must leave 5 to 10 cm in time for cutting. The use of weeds, straw, sawdust and other organic materials or black mulch under the tree tray can reduce the conflict between grass and trees, and also avoid the shallow absorption roots causing damage due to severe temperature and humidity changes, and promote robust root growth.
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.