The causes of wilting of eggplant are various, and the peasants should distinguish from the symptoms of their field performance and take appropriate measures to prevent and cure it in time.
First, see the field distribution
When the damage occurs, the field will generally appear wilting at noon on a sunny day, and return to normal in the early evening, which can cause serious plant death. For other diseases, the distribution of fields is mostly spotted.
Second, see if there is a root knot in the root
In the case of root-knot nematode disease, root knots of varying sizes can be seen in the roots, while other diseases do not have root knots.
Third, see if the vascular bundle is brown
The vascular bundles of Verticillium dahliae and bacterial wilt become brown. These two diseases do not show symptoms at the seedling stage and begin to show after flowering. However, Verticillium wilt from bottom to top, the vascular bundles of the stems and stalks are yellowish-brown. When wet, the stem base produces white molds, irregular yellowish patches appear between the leaf margins and veins, and remain near the main veins. Green, palmate mottled brown, after the site of disease withered, flower-like skin, and sometimes there will be "half crazy" phenomenon. Bacterial bacterial wilt disease, the middle and lower parts of the stem, is rough, and often grows with varying lengths of verrucose projections and adventitious roots, sometimes with brownish irregular spots on the diseased stems. Such as the disease stem to do cross-section inspection, slightly squeezed, milky white mucus overflow (bacterial pus).
Fourth, see if the roots are rot
Roots or roots of eggplant root rot disease, the skin is brown rot, and easy to peel, causing xylem exposure, other diseases generally do not have this symptom.
Fifth, see if the stem base and bifurcation are rot
Stem rot only harms the base of eggplant stalks, and most of them produce water-stained, dark-colored spots 3 to 5 cm above and below the surface of the soil, and quickly spread to the surrounding areas, causing the leaves to turn yellow from the bottom up and wilting. One week after the diseased spot passed around the stem, the plant quickly died of blue and dry, and the underground part showed more normal. Sclerotinia mostly infects the culm from the stem, gray, slightly depressed, phloem rot, and its mycelium can invade the disease stem, later epidermal longitudinal cracks, lesion size, shape, length, edge water stains, On the surface and diseased stems, white cotton flocculent hyphae and black sclerotia are present. The diseased part is wilted and dead. On the upper part of the plant, symptoms of "bending" can be formed. The epidemic disease mostly developed from stem bases and branching sites. It began to be water-stained and soon surrounded the shoots and stem bases and turned brown or dark brown spots. It spreads up and down, and the edges are not obvious, and are slightly sunken.
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 "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.
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.
DVR Mini Camera,Cctv Camera System, Outdoor Waterproof NVR Set , Wireless Security Camera NVR, Cctv NVR Kit
DVR Mini Camera,Cctv Camera System, Outdoor Waterproof NVR Set , Wireless Security Camera NVR, Cctv NVR Kit
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