Many people have been planted in Dendrobium Dendrobium. Today we mainly talk about the common pests and diseases in the process of planting Dendrobium Dendrobium and how to prevent it. First, the disease The disease occurs from August to October, mainly affecting the whole plant. The dark brown lesions first appear at the base of the plant and are water-stained. The roots are necrotic, causing the plants to wither and the leaves turn yellow and fall off. In severe cases, the lesions are connected into pieces, and the whole plant is like being boiled by boiling water, and then the leaves are shrunk and dry. In the prevention and control, water management should be strengthened to control the humidity in the shade; in the rainy season, the shade net around the shade should be opened, ventilation and humidity reduction should be carried out to reduce the occurrence of diseases; plants with serious diseases should be removed and brought out in time. Incineration treatment; the agent can be controlled by Bordeaux mixture or mancozeb. Second, anthrax The disease occurred from July to August, mainly affecting plant leaves. At the beginning of the disease, there are faded green dots on the leaf surface and gradually enlarge, forming round or irregular lesions, the edges are dark brown, and the central part is light, causing the leaves of the plants to wither and fall off, which seriously affects the growth of the plants. It can be controlled with Bordeaux mixture or methyl thiophanate. Third, soft rot When there is a lot of rain, high temperature, and poor ventilation, it is easy to cause disease, which can damage whole plants. The pathogens infested from the roots and began to be green and watery, and then developed rapidly to be yellowish brown to soften and rot. There is mucus on the lesion, and the rot has obvious odor. When the disease is severe, the leaves turn yellow quickly, and the decay of the decayed material is dry and rot. It is necessary to pay attention to the manual removal of the lesions and use the agricultural streptomycin for prevention and treatment. Fourth, pests To prevent and control the larvae of the butterfly moth, an insect net can be placed around the shade to prevent the adults from laying eggs. When the damage is serious, nuclear polyhedrosis virus, avermectin, etc. can be used for prevention and treatment. Five, mollusks The cockroaches and snails mainly occur in the spring and autumn, especially in the evening or night after the rain, and the leaves and buds of the plants are eaten in large quantities, causing the leaves of the plants to be smashed, the stems are bitten, and the buds are eaten, which seriously affects the growth of the plants. Affect the output. In the prevention and control, the weeds in the shade should be removed in time; the porcelain bowl can be placed on the mat of the seedbed, and the lime water is injected to prevent the pests from invading the seedbed. Six, 蚯蚓 After one year of planting, the substrate began to appear paralyzed.蚯蚓 will accelerate the decomposition of the matrix, so that the loose matrix is ​​“soiledâ€, which is not conducive to venting and permeable, affecting plant growth. The tea bran soup can be made with water, and the water is boiled for half an hour, then the water is poured on the seedbed at a ratio of 1:100, and the water is poured once every 2 to 3 months. The above is the main pest control technology of Dendrobium Dendrobium, and farmers are welcome to continue to pay attention to Hui Nong!
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3. To support multiple recording storage modes, not only local storage but also cloud storage should be supported.
Four. In the process of purchasing cameras, it is best not to be greedy for cheap prices and not simply pursue cheap prices. It is necessary to comprehensively consider factors such as the stability and clarity of the camera head. Whether the operation of the camera head is stable is determined by the 40 modules in the middle
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